release-notes-2.11

HTML header: <title>dCache 2.11 Release Notes</title>
             <!--#include virtual="/template/default-head.shtml" -->
             <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
             <!-- Bootstrap -->
             <link rel="stylesheet" href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css"/>
             <link rel="stylesheet" href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap-theme.min.css"/>
             <!--link type="text/css" rel="stylesheet" href="jquery.tocify.css" /-->
             <style type="text/css">
	     h5 {
		 font-size: 15px;
		 font-style: italic;
                 margin-top: 20px;
             }
             body {
                 padding-top: 20px;
             }
             @media (max-width: 767px) {
                 #toc {
                     position: relative;
                     width: 100%;
                     margin: 0px 0px 20px 0px;
                 }
             }
             @media print {
                 #toc {
                     display: none;
                 }
             }
             table.table {
                 font-size: 12px;
             }
             </style>

<div class="container">
<div id="banner">
   <div id="bird_large">
      <img src="/images/dcache-banner.png" class="bird"></img>
   </div>
   <div id="sidebar-b">
      <span class="dcache-nav-bar">
      <a href="/index.shtml">home</a>
      |
      <a href="/news.shtml">news</a>
      |
      <a href="/manuals/index.shtml">documentation</a>
      |
      <a href="/downloads/IAgree.shtml">downloads</a>
      |
      <a href="/feedback.shtml">feedback</a>
      |
      <a href="/manuals/googlesearch.shtml">search</a>
      |
      <a href="/imprint.shtml">imprint&#160;</a>
      </span>
   </div>
</div>
<div id="content">

<div class="row">

<div class="page-header">
<h1>What's new in dCache 2.11<br/>
<small>The release notes</small></h1>
<address>
<strong>Authors</strong><br/>
Paul Millar  &lt;paul.millar@desy.de&gt;
</address>
</div>


## Executive summary

 *  Faster deletion speeds

 *  Better integration of alarms service, easier configuration, and predefined alarms

 *  Multiple GIDs in kpwd

 *  Less clutter in GLUE 2 StorageShare

 *  Improved pool response during HSM request bursts

 *  Reduced latency on write

 *  Automatic throttling of SRM request rate when database request queue is full

 *  Decoupling of transfer managers from srm database


## Incompatibilities

This section describes potential incompatibilities with previous
versions of dCache.

### Configuration properties

All properties marked forbidden or obsolete are now no longer
recognised by dCache.  All properties that were deprecated in 2.10 are
now marked forbidden.

## Release 2.11.51

### Changes affecting multiple services

Fixed an issue with the dcache heap `dump command` when called with a simple file name as the output path. 
In this case the dump could in some cases be written to a different directory while the script claimed the dump had failed.
The dcache dump heap command has a `--force` option for cases in which the
JVM is unresponsive. This option was ignored for processes not running
as root.
This is fixed now.
### cells

A bouncing message bug in System cell is fixed.
### pool

Fix race condition in request scheduler.

### Changelog 2.11.50..2.11.51

<!-- git log 2.11.50..2.11.51 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[010e44f](https://github.com/dcache/dcache/commit/010e44f0fda51fd2b2ea539923179964f4ae58e3)
:   [maven-release-plugin] prepare release 2.11.51

[a6949c5](https://github.com/dcache/dcache/commit/a6949c58ed93dd496926231a7bed57ec4669f365)
:   dcache: fix heap dump to simple file names

[8080ee3](https://github.com/dcache/dcache/commit/8080ee36c547be40f2d02cebff12e6ac56291939)
:   script: Make dump heap --force work for non-root processes

[c5a1f6d](https://github.com/dcache/dcache/commit/c5a1f6d7378935ed62e715dbed37450a914d5aa9)
:   billing: additional fixes to insert triggers

[9dcb113](https://github.com/dcache/dcache/commit/9dcb11374bff49f3085369e5715437016db2f2b4)
:   srm: Do not expose TURL before request is ready

[0038371](https://github.com/dcache/dcache/commit/00383710e81e3d022ab150a1f439cd2cbd1bd41f)
:   pool: Fix race condition in request scheduler

[44c2af1](https://github.com/dcache/dcache/commit/44c2af1d881538c35853e410b16fed45e78e147f)
:   system-test: update disposable-CA generated credentials

[c4f72e7](https://github.com/dcache/dcache/commit/c4f72e7ef0630fc2d6bff74f18c2e8fd39dc25d7)
:   cells: Avoid bouncing message on no-route errors in System cell

[4e11bbe](https://github.com/dcache/dcache/commit/4e11bbeceb1837d8c3bd218f2b1d81404ef6ea48)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.50

### many

When representing checksums in the admin interface and configuration files, checksums are now presented in an improved format.


### Changelog 2.11.49..2.11.50

<!-- git log 2.11.49..2.11.50 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[919e8dc](https://github.com/dcache/dcache/commit/919e8dc4b9833376d06670658af3c2b3fc2287a5)
:   [maven-release-plugin] prepare release 2.11.50

[a18e783](https://github.com/dcache/dcache/commit/a18e783fd51059b5992924c13aecbe94823da071)
:   common: fix ChecksumType.toString()

[d18016b](https://github.com/dcache/dcache/commit/d18016bb7695cff1ac4545bcef1ce93cea40c107)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.49

### cells

LoginManager would occasionally generate error messages similar to "Discarding listening on $LOCATION 53684' because its age of 18721640 ms exceeds its time to live of 4500 ms.". This was due to erroneous reuse of old message envelopes in the internal messaging. This change fixes that problem.

This change addresses a potential problem in which messages sent between cells in the same domain could appear older than they are and thus would risk being discarded due to the time-to-live being expired.

### srm

A Tier-1 site reported problems with a major WLCG VO's read requests. Investigating the source of the problems showed that the srm_ifce library, used by the (outdated) GFAL v1 and the (supported) GFAL v2 SRM libraries, drastically limits the permitted lifetime of requests without providing admins any way to configure this. 

For sites seeing errors related to desiredTotalRequestTime being exceeded, this change provides the new configuration option srm.request.maximum-client-assumed-bandwidth in srm.properties as a work-around. 

Sites not observing such errors do not need to change anything with regard to this value.


### Changelog 2.11.48..2.11.49

<!-- git log 2.11.48..2.11.49 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[f526620](https://github.com/dcache/dcache/commit/f5266206fea57041d7077d5adeb8b3390a5873a3)
:   [maven-release-plugin] prepare release 2.11.49

[1bdc3e9](https://github.com/dcache/dcache/commit/1bdc3e91d5fec21b9b3684c7dd4b252c4759ef48)
:   srm: add short request lifetime work-around

[5577ba2](https://github.com/dcache/dcache/commit/5577ba2e622763c4f065130b541ce0c0c0e6ba1b)
:   chimera: Fix regression in inheriting ACLs on directory creation (HSQLDB)

[0992e32](https://github.com/dcache/dcache/commit/0992e322cbc618a46c530d3e4e66ff7c3ef2dd9d)
:   cells: Improve robustness of message time to live

[b46ca1a](https://github.com/dcache/dcache/commit/b46ca1a6bff83d08b705c15cadfedc8f16b805d8)
:   cells: Fix erroneous reuse of message envelope in location manager registration

[60bef1d](https://github.com/dcache/dcache/commit/60bef1d4658459d51bd10c530855ef800d0b86b4)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.48

### pnfsmanager

Billing entries for SRM uploads recently lost the storage class part of the entry. This update fixes that issue.
### poolmanager

This modification fixes a potential race condition in pool manager.

### webdav

This modification corrects the error reporting under WebDAV. When attempting to delete a non-existing file, unauthenticated users receive a 401 Unauthorized response, while authenticated users receive a 404 Not Found response.

### Changelog 2.11.47..2.11.48

<!-- git log 2.11.47..2.11.48 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[c7fa199](https://github.com/dcache/dcache/commit/c7fa1991c4a378f7e716a4c72cb4ab91673c6c6b)
:   [maven-release-plugin] prepare release 2.11.48

[489bbcb](https://github.com/dcache/dcache/commit/489bbcb1a602a9acf13b01ed2e8c6ea3327f6d42)
:   pnfsmanager: Fix regression in SRM billing entries

[db0f3f1](https://github.com/dcache/dcache/commit/db0f3f1e1952d1cd7b691ee3d9db1677132b9069)
:   poolmanager: Fix race condition in pool selection unit

[ba9df79](https://github.com/dcache/dcache/commit/ba9df79abbe9575f06a5fa116a4fde206fea8b64)
:   webdav: fix 404 error if attempting to delete a nonexistent file

[ad5442d](https://github.com/dcache/dcache/commit/ad5442d78548d89c0ac89b568e11ef5c77bc0a2d)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.47

### pnfsmanager

With this release, PnfsManager adds safety checks rejecting invalid upload paths that SRM might erroneously supply. This release hardens an installation against possible bugs triggering data loss.

This release adds a check that detects failed or incomplete SRM uploads and prevents the file from being committed to its final path. Common symptoms of this bug were zero sized files that experiment catalogues registered as successfully uploaded.

### srm

This release adds a check to detect broken uploads using SRM during the final stage of file transmission. While it causes transfers to take a little more time, resilience against upload failures is increased.

### Changelog 2.11.46..2.11.47

<!-- git log 2.11.46..2.11.47 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[56d90b3](https://github.com/dcache/dcache/commit/56d90b3ec3b3d9f2a8c371863bb0dba04a65d749)
:   [maven-release-plugin] prepare release 2.11.47

[271fa08](https://github.com/dcache/dcache/commit/271fa086aafb62e89b48a12fb7e2c4722f737249)
:   srm: Check for broken files during srmPutDone

[33713a7](https://github.com/dcache/dcache/commit/33713a7d6975233bd7660e784c56d5bbb364b7a3)
:   pnfsmanager: Check file size and upload completion when committing temporary upload paths

[11931a0](https://github.com/dcache/dcache/commit/11931a001fddc49f37c1c95a040cb3d6b2ab0d88)
:   pnfsmanager: Protect against erroneous upload paths

[d9e2e57](https://github.com/dcache/dcache/commit/d9e2e5733ef82e177b51721aa4bc6561e2aafdc2)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.46

### Changes affecting multiple services

Several cases of slow performance were reported while deleting
directory in Chimera.  This is now fixed.

### pool

When command execution to migrate files between pools (e.g. `migration
concurrency` or `migration copy`) is interrupted due to the failure to
find migration job the returned error message is considered as a bug.
This is now fixed so that a new message is returned indicating that
the job being requested does not exist.

### srm

When file upload is cancelled the value of temporary upload path
tracked by SRM could be a value different from a regular path, either
because it was changed outside of dCache, or it contains entries from
a very old version of dCache. This could result in data loss while
canceling upload.  The current release fixed a potential data loss
scenario.

### statistics

The statistics service creates static HTML pages that describe dCache
usage over time as simple files that the webadmin service can
serve. This includes information about pools and store-units.  The
problem is that the statistics webpages do not show information about
any pool or store-unit that contains a `/` in the name.  This is now
fixed.  A side-effect is that the history of any pool or store-unit
containing a `^` in the name is lost.


### Changelog 2.11.45..2.11.46

<!-- git log 2.11.45..2.11.46 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[3a6fb84](https://github.com/dcache/dcache/commit/3a6fb84798566e084ce6d6d9f629fe44b1019ecf)
:   [maven-release-plugin] prepare release 2.11.46

[311c77b](https://github.com/dcache/dcache/commit/311c77b758c8f5bbe555f40955f36e4201bcd948)
:   chimera: Alter statistics target for t_tags(itagid)

[e180fa7](https://github.com/dcache/dcache/commit/e180fa7de2e618299e1f5914b2160326d6147898)
:   srm: Add safe-guard against invalid file ID in put requests

[fecb34d](https://github.com/dcache/dcache/commit/fecb34d804ebb0e460b34d0e1f9ead15ffe25f71)
:   pool: Don't consider failure to find migration job a bug

[b1cde64](https://github.com/dcache/dcache/commit/b1cde64fc24d1dfd169a9f85add0a8aa7039e7bf)
:   statistics: encode '/' in filenames

[ecdf23d](https://github.com/dcache/dcache/commit/ecdf23d54a4a246c75135203fb08098e675b4837)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.45

### nfs

Pinning files is now a non-blocking operation. For files stored on tape, this should result in a more responsive system behaviour, avoiding NFS blocking in situations with many concurrent pin requests.


### Changelog 2.11.44..2.11.45

<!-- git log 2.11.44..2.11.45 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[9474044](https://github.com/dcache/dcache/commit/94740448a404c454436cf9341d06e3ca6c82a3a0)
:   [maven-release-plugin] prepare release 2.11.45

[8074557](https://github.com/dcache/dcache/commit/8074557686b89407429c451d336411457600ab79)
:   adapt 3eab402754b814f681a14d296d808031b05f2737 to 2.11 branch code

[9115ff4](https://github.com/dcache/dcache/commit/9115ff4beedffece4dfcf11b7a0dbea8a7e30a72)
:       nfs: use noitify instead of blocking sendAndWait when          sending pin/unpin messages via touch ".(get)(<file_name>)(pin)"          command

[1970035](https://github.com/dcache/dcache/commit/1970035a2bc31e1f9a63dc5a613ff9bf3482dc27)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.44

### Changes affecting multiple services

Sometimes when a cell start up was interrupted an error message was logged as a bug. This is now fixed.  

### info-provider

The GLUE infomation provider supplies information about the dCache instance, which is important for the clients in WLCG area.
Because in dCache different doors can have different roots, clients may need to adjust their path when accessing dCache through different doors.
The info-provider is updated so that a new **path root**  property is provided.  This allows clients to modify paths, as necessary.  Note that
the SRM door already supports this translation when redirecting clients for transfers.


### Changelog 2.11.43..2.11.44

<!-- git log 2.11.43..2.11.44 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[9476747](https://github.com/dcache/dcache/commit/9476747740312c79cbbfa2108c08c11eaad27483)
:   [maven-release-plugin] prepare release 2.11.44

[6746bd6](https://github.com/dcache/dcache/commit/6746bd62b7a27c3ed25b9315f2497bc81b73d067)
:   info-provider: publish door root path

[20e2d4d](https://github.com/dcache/dcache/commit/20e2d4d86cc3def116d6d4f626fd5c83762c07e2)
:   cells: Suppress illegal state exception during initialization

[a5c6109](https://github.com/dcache/dcache/commit/a5c6109dba3a0df4aa03b773b4c736b395169948)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.43

### pool

Revert Netty version back to v3.9.9.  A previous release upgraded the
version of Netty, but this appears to have introduced problems for
some HTTP transfers where the pools run out of memory.

### spacemanager

Spacemanager backs off when it encounters a problem writing to the
database.  Previously, if the problem was due to deadlocks then the
two tasks involved are delayed by the same amount, which means it is
possible that subsequent attempt will also deadlock.  This release
randomises the delay to reduce the likelihood of this problem
occuring.


### Changelog 2.11.42..2.11.43

<!-- git log 2.11.42..2.11.43 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[ccf844b](https://github.com/dcache/dcache/commit/ccf844b4267fac4e6215d3cf61f15f0a05acb89c)
:   [maven-release-plugin] prepare release 2.11.43

[3e6242d](https://github.com/dcache/dcache/commit/3e6242d321b36c6463256d21d1d6ee3ec3eda2a3)
:   pool: revert Netty back to v3.9.9

[11b4e4b](https://github.com/dcache/dcache/commit/11b4e4b959a9b069653f3cbf303b2377331a5d98)
:   spacemanager: Randomize backoff in case of transient errors

[74e6bf0](https://github.com/dcache/dcache/commit/74e6bf00059aaf979f6694bf13826a9d8b81cc36)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.42

### xrootd

Fix dCache handling of open requests where uploads were considered
downloads.


### Changelog 2.11.41..2.11.42

<!-- git log 2.11.41..2.11.42 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[5529bae](https://github.com/dcache/dcache/commit/5529bae20160ebe94213a9a161b9278d1fdb6f39)
:   [maven-release-plugin] prepare release 2.11.42

[abc99ab](https://github.com/dcache/dcache/commit/abc99ab7f1bdc230f1ef5ec93096338a7ee9756c)
:   xrootd: Fix classification of uploads

[51f0784](https://github.com/dcache/dcache/commit/51f078488c691bc9d53f3fd9cdcdde36eacf586a)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.41

### Changes affecting multiple services

Don't log `Error while reading from tunnel:
java.nio.channels.AsynchronousCloseException` when a domain shuts
down.


### Changelog 2.11.40..2.11.41

<!-- git log 2.11.40..2.11.41 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[17822a3](https://github.com/dcache/dcache/commit/17822a344bf71fd2db031da21336210433b63129)
:   [maven-release-plugin] prepare release 2.11.41

[f38624f](https://github.com/dcache/dcache/commit/f38624fcbfc3017aae728a0832db6a84374ad540)
:   cells: Don't log AsynchronousCloseException when tunnel closes

[09ad53e](https://github.com/dcache/dcache/commit/09ad53e18b567ecd074359659f97f45c1aeb5909)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.40

### Changes affecting multiple services

Update the Spring, Milton, AspectJ, Jetty and DataNucleus-core
libraries to latest version.  All dCache services are affected.

### pool

If a 3rd-party transfer fails then the pool may log and report
incomplete information on why this happened.  This release fixes this
problem.


### Changelog 2.11.39..2.11.40

<!-- git log 2.11.39..2.11.40 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[94877da](https://github.com/dcache/dcache/commit/94877da20e452547e03005b6868e3ea9c0512a86)
:   [maven-release-plugin] prepare release 2.11.40

[9a50720](https://github.com/dcache/dcache/commit/9a507205ad3f432aeaf8a533734d18884fc5ad77)
:   2.11: upgrade third party dependencies

[e93efef](https://github.com/dcache/dcache/commit/e93efef3994e69d416a83d825c7dbde61221290c)
:   http-3rd-party: ensure IOException logged with toString

[6267fa8](https://github.com/dcache/dcache/commit/6267fa8509de8d7a2644c9d9db4307b69b042bbb)
:   info: fix test to be less critical on timing

[d60977f](https://github.com/dcache/dcache/commit/d60977fe77e5e3a03b445f8197a684e42d5de925)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.39

### nfs

Report EOF when client undertakes mixed read/write workload and
attempts to read beyond currently written data.

### poolmanager

Previous releases of dCache contained a bug where replicas generated
by pool-to-pool copies failed to include the access latency and
retention policy.  While not directly affecting dCache operations, the
result is that this information is no longer reliable.

### spacemanager

Fix listing by PNFS-ID.  Glob support is removed as it was
non-functional.


### Changelog 2.11.38..2.11.39

<!-- git log 2.11.38..2.11.39 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[0f7347a](https://github.com/dcache/dcache/commit/0f7347a19d67e003e3b5e0f1b50053e771ab2807)
:   [maven-release-plugin] prepare release 2.11.39

[e4aa4a2](https://github.com/dcache/dcache/commit/e4aa4a2c97ce3f10b382d1dc25215997bac3a62d)
:   poolmanager: Fix missing access latency and retention policy on pool to pool copy

[8ddd796](https://github.com/dcache/dcache/commit/8ddd796b4208d57909381dca7a3ba79ffe02ff04)
:   spacemanager: Fix listing by pnfs id

[4611bd1](https://github.com/dcache/dcache/commit/4611bd10c925074666744bdf5c1be7d42684ca2a)
:   nfs-proxy: keep track of written bytes

[16445a0](https://github.com/dcache/dcache/commit/16445a089237d99d9437b5b0eb382e9975b69fb8)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.38

### Changes affecting multiple services

This release fixes a caching issue where changes to inode metadata
(e.g., ownership or permissions) for `/` (the root directory of
Chimera) are not visible until the service is restarted.  This affects
NFS doors and pnfsmanager service.


### Changelog 2.11.37..2.11.38

<!-- git log 2.11.37..2.11.38 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[310eb5d](https://github.com/dcache/dcache/commit/310eb5d51d4f8f9527389cc18157b56824cb06dc)
:   [maven-release-plugin] prepare release 2.11.38

[447822a](https://github.com/dcache/dcache/commit/447822a89ac3731d0413603a7eaa59f488220213)
:   chimera: Prevent filling of stat cache of root inode

[c30f84c](https://github.com/dcache/dcache/commit/c30f84c07c0ff592a254adc4a507700761947b9c)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.37

### Changes affecting multiple services

The chimera library, used by PnfsManager and NFS, contains possible
race conditions that can lead to a NullPointerException.  These are
updated so that Chimera gives the correct error message under these
circumstances.

The chimera library, used by the pnfsmanager and nfs services,
contains a bug where two near-simultaneous attempts to delete a
hitherto empty directory and write a file into the same directory will
both succeed but leave an orphaned file: it exists in the `t_dirs`
table but the parent does not exist in `t_inodes` table.  This seems
to be triggered when an ftp door fails with `no write pool
configured`.  This release fixes this problem.

### pnfsmanager

Fix the error message (logged by the domain hosting pnfsmanager) if an
attempt to finalise an SRM upload fails within pnfsmanager, or if an
attempt to cancel an SRM upload fails within pnfsmanager.

### webdav

Update to the latest version of milton.

### xrootd

Update the `alice-token` plugin to allow the host name check to
succeed on dual-stack (IPv4 and IPv6) machines.


### Changelog 2.11.36..2.11.37

<!-- git log 2.11.36..2.11.37 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[68608ee](https://github.com/dcache/dcache/commit/68608ee8e9b593c66451ad092191c6f14b060ceb)
:   [maven-release-plugin] prepare release 2.11.37

[77339bc](https://github.com/dcache/dcache/commit/77339bcf72bb57db75eac937215029b773d37bbc)
:   xrootd: Update alice token plugin to fix IPv6 compatibility

[435f26c](https://github.com/dcache/dcache/commit/435f26cadd98955ff7cc51927ad036bbbfbf9c0b)
:   chimera: Detect races in directory deletion

[d2fdea0](https://github.com/dcache/dcache/commit/d2fdea02ebe1dfbb76c1677cce1b65dc590ccc14)
:   chimera: Detect races during move

[cf7c8c5](https://github.com/dcache/dcache/commit/cf7c8c59dfdbfaae1c52e60e36195a308fb20b02)
:   webdav: update to latest milton

[ef188e5](https://github.com/dcache/dcache/commit/ef188e52ab3ae266f7ea59a482c359976926dd08)
:   PnfsManager: remove copy-n-paste error in error message

[9c4315d](https://github.com/dcache/dcache/commit/9c4315de5148a31024a9bb0549791b82f96c49a7)
:   system-test: Fix grid-security settings

[7b154e7](https://github.com/dcache/dcache/commit/7b154e7b8d931906227c5259ad68f5e9513efdfe)
:   rpm: enforce SL5 compatibility when building RPM packages

[5287e2b](https://github.com/dcache/dcache/commit/5287e2b21ffb8c279845c716ab81a55410c25120)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.36

### Changes affecting multiple services

Eliminate race condition that can lead to a NullPointerException if a
cell does not shut down cleanly.

The `dcache` script no longer checks whether the `hostkey.pem` file is in
PKCS#8 format when `dcache stop` is invoked.  Previously this could lead
to orphaned dCache domains; for example, when upgrading dCache RPM.

### admin

Fix potential IndexOutOfBoundsException should the response from the
`acm` cell be malformed.

### pnfsmanager

Contribution from Kurchatov: update the ChimeraCleaner to work-around
the Java compiler's inability to produce compatible Java 7 binaries
when compiling with JDK 8.  **Note**: sites using official dCache.org
packages do NOT need to upgrade as a result of this change.

### pool

Fix an intended pool-to-pool transfer optimisation: the receiving pool
failed to reuse a delayed mover, should the pool-to-pool request
timeout and be retried.

Fix pools so that they do not log NullPointerException if a pool
receives a request to restore a file from an HSM to which it has no
access.

### Scripts

Fix how the `writedata` command in the `chimera` shell accepted data:
the command-line argument was ignored if supplied and data was taken
from stdin, if no argument was supplied then the command would fail
with NullPointerException.  ***Note***: this command does NOT write
data into dCache, but into Chimera.

### srm

Fix the context information included when logging failures to write
job information to the database.


### Changelog 2.11.35..2.11.36

<!-- git log 2.11.35..2.11.36 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[f00f303](https://github.com/dcache/dcache/commit/f00f303b9c4642cfb47e2ccfeae8403952eb74a2)
:   [maven-release-plugin] prepare release 2.11.36

[9e1d0e2](https://github.com/dcache/dcache/commit/9e1d0e26cc645c6d2b15a54de0487708234c2821)
:   srm-client, dcache: fixed passing incompatible arguments to functions

[57e8e75](https://github.com/dcache/dcache/commit/57e8e757c67143659d10fca15055ca8dc9254ac7)
:   dcache: removed unecessary use of non-short-circuit logic

[f311296](https://github.com/dcache/dcache/commit/f311296f50f9d05861737e7e136206771e5cc07f)
:   pool: Fix NPE when restoring file

[8cf34a9](https://github.com/dcache/dcache/commit/8cf34a9a9454cd68187370c0c7b85932f5f176e7)
:   ChimeraCleaner: reallow to be compiled/run on different Java versions

[ff3c1c9](https://github.com/dcache/dcache/commit/ff3c1c944e62a0cde9ca528002730dff48cb65b2)
:   scripts: do not check for PKCS#8 formatted hostkey.pem on shutdown

[d56bf7a](https://github.com/dcache/dcache/commit/d56bf7ad1704fd2b8fc2fd05b14d719f10db671a)
:   chimera: Null value passed to non-null parameter in org.dcache.chimera.cli.Shell$WriteCommand.call()

[cbe3e69](https://github.com/dcache/dcache/commit/cbe3e697eccd3d24633af97620eda6034d246916)
:   srm: Use correct logging context when saving jobs

[23c82bb](https://github.com/dcache/dcache/commit/23c82bb72e2150773c8e2d18a6482908404218ef)
:   cells: Fix NPE during shutdown

[cfd0e9a](https://github.com/dcache/dcache/commit/cfd0e9adc200926bad2abebc01346f6736a19a18)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.35

### Changes affecting multiple services

When starting up, all doors (dcap, ftp, nfs, srm, webdav, xrootd) and
pools advertise their presence to other dCache components before they
are able to handle incoming requests.  This can lead to subsequent
queries timing out as the service finishes starting up.  With this
version of dCache, doors and pools only advertise their presence once
they can handle incoming requests.

### pool

This release updates how dCache configures the Berkeley DB when used
for storing pool metadata.  In addition, dCache will now no longer
disable the pool when suffering a Berkeley DB-related problem if the
Berkeley DB environment is still valid.  Combined, these two changed
should greatly reduce the occurances of pools disabling themselves
when under heavy IO load.


### Changelog 2.11.34..2.11.35

<!-- git log 2.11.34..2.11.35 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[a10d104](https://github.com/dcache/dcache/commit/a10d1041b9c7ea8db5ffa8a6a6a710b2972c3684)
:   [maven-release-plugin] prepare release 2.11.35

[3b3ba40](https://github.com/dcache/dcache/commit/3b3ba40ca8b1350ebde258608de6a00e7da69e20)
:   pool: Refine Berkeley DB failure handling

[1ed3b48](https://github.com/dcache/dcache/commit/1ed3b485329cb10ed169e16af36c2707054614ee)
:   Don't announce cells to other services until they have started

[aa64225](https://github.com/dcache/dcache/commit/aa6422507d8fc8ba3409220cd3ad3feda81ceb90)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.34

### Changes affecting multiple services

The `ftp`, `webdav` and `xrootd` doors will delete the target file if
an upload was unsuccessful.  The copy manager (part of the
`transfermanagers` service) has a similar behaviour if an internal
copy is unsuccessful.  If this delete was unsuccessful (e.g., the
client deleted the file itself) previous dCache versions would log
this at `ERROR` level.  With this dCache version, such occurrences are
logged at `DEBUG` level.

### nfs

Fix race condition that can occur when a pool is first accepting pNFS
transfers if multiple requests are processed almost simultaneously.

### webdav

The webdav door has separate configuration allowing the admin to
configure the door-local path that contains site-local files and the
URI prefix to access those files.  Earlier versions of dCache
mistakenly used the former for the latter, which this release fixes.


### Changelog 2.11.33..2.11.34

<!-- git log 2.11.33..2.11.34 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[96732e6](https://github.com/dcache/dcache/commit/96732e61a980d3339825b6172eebf81d56c7948b)
:   [maven-release-plugin] prepare release 2.11.34

[7472ae6](https://github.com/dcache/dcache/commit/7472ae6de2ee7a202ec97cd943653cd8549113b0)
:   Revert "webdav: Add robots.txt"

[ded846d](https://github.com/dcache/dcache/commit/ded846db4f54791ed9adcdf465dbda28085d1b36)
:   webdav: Respect webdav.static-content.uri property

[f083d2f](https://github.com/dcache/dcache/commit/f083d2fa464f1e7d69338286a43ce19d3861b2d9)
:   doors: Do not log failure to delete absent files on upload failures:

[8349731](https://github.com/dcache/dcache/commit/8349731615a9c0c0c46efee6fce3b1777d4bdfc8)
:   nfs4: fix race in request processing

[c61fb66](https://github.com/dcache/dcache/commit/c61fb66086198fffc4be1699db6094436c48b372)
:   webdav: Add robots.txt

[46c3745](https://github.com/dcache/dcache/commit/46c37455f5fbdd903a748e0e6c9a0e6dae976e4d)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.33

### Changes affecting multiple services

In earlier versions of dCache, the code-base would always establish a
node's FQDN through a DNS query on start-up.  For some services and
for dCache scripts (for example, the `chimera` script), this
information is not used.  With this release, dCache only makes the DNS
query when it is necessary, so domains hosting services that do not
need this information and scripts will start faster.

### dcap

Doors describe their root path to SRM so it can calculate appropriate
TURLs.  Previous versions of dCache had dcap doors register incorrect
paths, which this release fixes.

dCache configuration allows an admin to control if certain ciphers are
allowed.  In particular, this allows sites to remove support for
problematic ciphers or hashing algorithms.  This release fixes a
problem where the GSI-dcap door failed to honour such settings.

### pool

The replica-manager periodically requests a list of file replicas that
a pool is hosting.  In previous versions of dCache, if the pool finds
a broken file then an error is returned to replica-manager.  The
replica-manager then considered the entire pool as being offline.
With this version od dCache, such errors are logged on the pool.  The
replica-manager will not consider the pool as hosting that file's
data, but will otherwise consider the pool online.

The different HSM operations (flush, stage and remove) have internal
timeouts after which the pool considers the request as failed.  In
previous versions of dCache, the default pool setup includes a four
hour timeout for flush and stage but neglected to set a default for
delete.  This omission caused delete operations to time-out very
quickly. With this release, delete operations also have a default of
four hours.

Fix the Ruby implementation of the hsmcp script (`hsmcp.rb`) so it can
parse new command-line arguments that include concurrency options.

The concurrency for active HSM operations is configurable and may be
adjusted dynamically.  In earlier versions of dCache, decreasing the
concurrency only became effective when that operation started to idle.
This has been fixed so the limits start to have an effect as
operations complete.

Each movers can have one of three priority (LOW, MEDIUM, HIGH) and a
selection discipline (FIFO or LIFO).  The documented behaviour was for
queue with names that start with `-` have LIFO discipline and those
that start with any other character have FIFO discipline.  Due to a
bug, the order was wrong, with the priorities inverted and the two
disciplines swapped, so LOW priority movers were started before MEDIUM
level and MEDIUM were started before HIGH.  This release fixes this so
HIGH priority movers are selected preferentially over MEDIUM and,
MEDIUM priority movers are chosen over LOW priority; however, it was
decided to keep the disciplines as in previous versions and updated
the documentation accordingly.  There are several reasons for this:
first, there is no difference between LIFO and FIFO when movers are
not queued; second, neither discipline will help if the pool is
persistently overloaded; third, LIFO discipline (although unfair) is
documented as providing a better overall throughput during a
time-limited overload; fourth, by default dCache has been running with
LIFO discipline since v1.9.11 (released 2011-01-13) without any
apparent problems.

HTTP third-party transfers report back if there was a problem
verifying that the transfer was successful.  One possible problem is
that the remote server failed to supply checksum information.
Reporting of such situations is now fixed.

### webdav

In previous versions of dCache, should a user cancel a transfer
shortly after a mover is created then there was a risk that the mover
is abandoned.  This is fixed with this release.

### xrootd

In earlier versions of dCache, if the xrootd door times out for a
write request while waiting for the mover to send the redirection
information then the mover is abandoned.  This is fixed with this
release.


### Changelog 2.11.32..2.11.33

<!-- git log 2.11.32..2.11.33 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[3073f9f](https://github.com/dcache/dcache/commit/3073f9f3f9214c0f41fe2ffc7675d46a9e6ad618)
:   [maven-release-plugin] prepare release 2.11.33

[194a072](https://github.com/dcache/dcache/commit/194a07223b505d1638c9a18e63fb474a23203091)
:   hsmcp: update to match new HSM interface.

[cbd0d90](https://github.com/dcache/dcache/commit/cbd0d90ebe7561601d80de6828dc1fa685c8ab67)
:   (2.11) old replica manager: prevent pool being listed as offline when there are files with corrupt metadata

[faf8dd4](https://github.com/dcache/dcache/commit/faf8dd436d2d73aa510161b89b4b9e7ab5b5990d)
:   webdav: Kill abandoned movers

[bd8ed51](https://github.com/dcache/dcache/commit/bd8ed5159758290dcccef896931da7ed8ce818ce)
:   xrootd: Kill mover on aborted write

[17aac10](https://github.com/dcache/dcache/commit/17aac104b04c4a1649927cb1b15faa22c9a4ff05)
:   pool: Fix transfer prioritization

[719fe09](https://github.com/dcache/dcache/commit/719fe093d61e38d53a0aa7af7385006409f66ac1)
:   pool: Add nearline storage default timeouts

[4c1fc64](https://github.com/dcache/dcache/commit/4c1fc64aade8361d24fe067ed6dc55acaaec9dc1)
:   pool: Let script nearline storage provider scale down when lowering limits

[2af9726](https://github.com/dcache/dcache/commit/2af97266c9e8765bcd60bc49887e8a3d253ef217)
:   dcap: Fix broken argument parsing

[903ecd2](https://github.com/dcache/dcache/commit/903ecd2dbff807e51439c972129e056b63a2e02a)
:   Fix build and startup regression

[1a6ab63](https://github.com/dcache/dcache/commit/1a6ab63ff2805b900473825d77f98585be096b87)
:   dcap: Fix socket factory argument parsing

[519ad35](https://github.com/dcache/dcache/commit/519ad35525d69f92f6d01f7f990b9e593d5af64b)
:   pool: Fix error reporting in remote HTTP mover

[d243819](https://github.com/dcache/dcache/commit/d2438194aa28f881931104a0da14f249503e7615)
:   prepare for next development iteration

## Release 2.11.32

### srm

Fix security vulnerability in srm
[EGI-SVG-2015-9495](https://wiki.egi.eu/wiki/SVG:Advisory-SVG-2015-9495)
(restricted).

## Release 2.11.31

### Changes affecting multiple services

In many cases, poolmanager would timeout after ten seconds when asked
which pool to use for a transfer.  This behaviour was not intended.
The consequence of this bug is protocol specific: for some protocols,
the door retries internally while other doors propagate this error to
the client.  Another consequence was the increased risk of the domain
hosting poolmanager running out of memory, particularly when staging
files.  This release fixes the underlying problem.  It is recommended
that all doors be upgraded.

Fix a performance regression when deleting directories; the fix
affects the pnfsmanager and nfs services.

### spacemanager

Fix bug that can result in leaked entries in space-manager file
management from failed uploads.  The problem is most likely triggered
when a client cancels an FTP upload at the same time as the
correponding SRM upload request expires.  The problem may also be
triggered by communication failure with PnfsManager and the user
deleting the failed upload before the pool retries.

### srm

Fix support for credential delegation if the credential's certificate
is sent over multiple SSL frames.  This most likely happens when the
certificate exceeds the maximum frame size.


### Changelog 2.11.30..2.11.31

<!-- git log 2.11.30..2.11.31 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[8db6850](https://github.com/dcache/dcache/commit/8db6850e80cb080a872ebdaf38d9c0da596663bd)
:   [maven-release-plugin] prepare release 2.11.31

[774e283](https://github.com/dcache/dcache/commit/774e28342089a75ae8170a4b010627eef7513d3e)
:   spacemanager: Fix race condition leading to leaked reservation entries

[23cd4ac](https://github.com/dcache/dcache/commit/23cd4acd8f40e56bc8e240c00f390a7688c4e17d)
:   chimera: Resolve performance regression in directory deletion

[2667ae5](https://github.com/dcache/dcache/commit/2667ae5e458b5ba4af25ba382666ff3f4fd7d7ee)
:   doors: Fix pool selection timeout handling

[cc588cf](https://github.com/dcache/dcache/commit/cc588cfbb14b288e05708123cf619de23a8300ff)
:   Fix timeout math to avoid overflow

[1ea1a31](https://github.com/dcache/dcache/commit/1ea1a3160c9c1b609fd512fbdf48131be3c93131)
:   srm: Fix credential delegation

[a1b6dd1](https://github.com/dcache/dcache/commit/a1b6dd18fadf0aa8e591e016d22fe0434598e192)
:   Preparing for next release cycle

## Release 2.11.30

### ftp

Fix security vulnerability in `gsi` and `kerberos` authenticated ftp.


## Release 2.11.29

### Changes affecting multiple services

The `System` cell of each domain contains a `version` command that
allows discovery of which dCache version is running.  This release
fixes this command.  **Note:** there is no problem with the `dcache`
script's `version` command.

### nfs

The NFS protocol provides access to additional infomation through dot
commands.  This release fixes the `nameof` and `pathof` commands for
non-ASCII filenames.

### pnfsmanager

Fix that dCache respects the setgid bit on a parent directory when the
user uploads a file via the SRM protocol.  **Important:** the srm node
should be updated at the same time.

### srm

Enforce authorisation of requests to finalise or cancel an upload.
When initiating an upload, the user's uid and primary gid are taken as
the request owner-uid and owner-gid respectively.  Only users that
have the same uid as the request's owner-uid or are a member of the
request's owner-gid are allowed to cancel or finalise an upload.
**Important:** the `srm` must be updated if the `pnfsmanager` is
updated.

### webadmin

This release fixes a bug with the periodic building of billing plots.
Previously, if the billing service took too long to reply then there
would be no further updates to the billing plots.


### Changelog 2.11.28..2.11.29

<!-- git log 2.11.28..2.11.29 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[5b60c47](https://github.com/dcache/dcache/commit/5b60c4772044d6e0cb8bd664998a5c73d56a0c67)
:   [maven-release-plugin] prepare release 2.11.29

[e80fad6](https://github.com/dcache/dcache/commit/e80fad64f803c5f60062c702248c1ea5826c8127)
:   rpm: remove "commented out" macros lines from spec file

[c68d33d](https://github.com/dcache/dcache/commit/c68d33d4fb866fabfb994031c96f8bd719cd617d)
:   chimera: fix nameof and pathof for paths containing unicode

[ec9e87f](https://github.com/dcache/dcache/commit/ec9e87fdb49d5552658dd7e49ce96fb3032b4223)
:   chimera: Let SRM respect setgid on upload

[a784ba4](https://github.com/dcache/dcache/commit/a784ba4344b0b01a9b420bc77ee2fdd3c8cea0ff)
:   srm: Add authorization to put done and abort requests

[daaacd0](https://github.com/dcache/dcache/commit/daaacd042593b72ddd96021e1c1d951dbd49dbc8)
:   module: cells

[f37db11](https://github.com/dcache/dcache/commit/f37db11c81223fa008b81b0035738c37828ae64e)
:   (2.11) dcache-webadmin: add TimeoutCacheException to catch clause in billing service

[22c54d3](https://github.com/dcache/dcache/commit/22c54d31694620ae655f1c1561e8ad527ed678ed)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.28

### Changes affecting multiple services

Specifying the `DISABLE_BROKEN_DH` flag in the `dcache.authn.ciphers`
configuration property disables all Diffie-Hellman ciphers if Java 7
is used; if dCache is run with Java 8 then this flag has no effect.
Disabling DH ciphers is necessary because Java 7 contains a broken
implementation of Diffie-Hellman, which was fixed with the release of
Java 7 update 51.  This dCache release updates the behaviour of the
`DISABLE_BROKEN_DH` flag to allow Diffie-Hellman ciphers if dCache is
run within Java 7 update 51 or later.

The description of the `DISABLE_EC` and `DISABLE_RC4` flags have been
expanded and updated.

### infoprovider

An earlier patch added support for publishing a single dCache instance
with multiple SRM endpoints.  This provided incompatible with sites
that use a DNS alias for their official SRM endpoint, so that change
is reverted with this release.  Support for publishing multiple SRM
endpoints is available with dCache v2.13.

### nfs

Add support for the `TEST_STATEID` and `FREE_STATEID` RPC methods.
These are used by the Linux kernel during recovery procedure.  The
previous lack of support for these methods can lead to the leaking of
stateids, which can lead to `NFS4ERR_RESOURCE : Too many states` being
logged.

### pool

Improve the error message (logged by the pool and in billing) should
the FTP mover fail to connect to the client.

This release updates the error the pool reports to an NFS client when
the client attempts to read or write and the pool cannot find the
mover.  This situation is mostly likely caused by restarting the pool.
When it receives the modified response, the client will fall back to
using proxy-IO.  This allows NFS clients that were reading a file to
survive a pool restart.


### Changelog 2.11.27..2.11.28

<!-- git log 2.11.27..2.11.28 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[77e6e79](https://github.com/dcache/dcache/commit/77e6e795eb68cc14756d973fe41fc920469110f9)
:   [maven-release-plugin] prepare release 2.11.28

[bdff7c7](https://github.com/dcache/dcache/commit/bdff7c798b8e141060136ef14f4fbddb061c0f2e)
:   Fix broken commit daeb9ed9

[daeb9ed](https://github.com/dcache/dcache/commit/daeb9ed9886d3071efaf58ddf4ef7990514ee6e4)
:   pool: fix ftp mover to provide better logging when failing to connect

[44f1d46](https://github.com/dcache/dcache/commit/44f1d461879a3bf7e43afd5f1b0012f66988d9b8)
:   crypto: refine handling of broken ciphers

[22a8c11](https://github.com/dcache/dcache/commit/22a8c11146402eed004bd2d4c8d6449f83b5e5ef)
:   Revert "infoprovider: remove single SRM instance limitation"

[a492eb4](https://github.com/dcache/dcache/commit/a492eb4085a9fa59d526fb8232d6342ac5f5cf0a)
:   libs: update to nfs4j-0.9.7

[24c9981](https://github.com/dcache/dcache/commit/24c9981de073834ecb589555da3270ce90904e80)
:   pool: report IO error if we cant find NFS mover

[f8b4dd5](https://github.com/dcache/dcache/commit/f8b4dd5284c30e04c21293d6d8cb7dc99f71b551)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.27

### Changes affecting multiple services

The event logger records when messages are received and sent by cells.
Some cell messages send string commands; if so, the log entry contains
that string.  In previous releases, such string commands were
mistakenly double-escaped.  This is fixed with this release.

### ftp

Fix debug output to include the flavour of GSS implementation; for
example, `GssFtpDoorV1::secure_reply: going to authorize using k5`

### pnfsmanager

When a user attempts to delete a symbolic link using a non-NFS door,
previous versions of dCache would resolve the symbolic link to
determine whether the user is allowed to delete the symblic link: only
if the user is allowed to delete the symblic link's target would the
symbolic link be removed.  With this release, the check verifies if
the user is allowed to delete the symbolic link instead.

### pool

This release updates the JVM command-line to make it explicit that
compressed object references are in use.  This allows the Berkeley DB
library to calculate a more accurate cache size, potentially improving
pool performance.

In previuos releases, any attempt is made to query a pool's info
(e.g., via the admin interface) while the pool is initialising will
block until the initialisation has completed.  This has a knock-on
effect of blocking all subsequent messages.  With this release,
requesting information about a pool will not block during
initialisation.

Fix high memory usage during pool initialisation if pool has any
precious files.

### xrootd

Earlier releases will record a stack-trace if xrootd recieves a
malformed request.  This is now fixed.


### Changelog 2.11.26..2.11.27

<!-- git log 2.11.26..2.11.27 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[8642172](https://github.com/dcache/dcache/commit/86421728b0ccbc3b24ebd7b91780ff5153c8a209)
:   [maven-release-plugin] prepare release 2.11.27

[d517382](https://github.com/dcache/dcache/commit/d51738281e46fe0e310d56d1ac6cb001ecd0ff6d)
:   cell: Don't quote string command in event logger

[c671209](https://github.com/dcache/dcache/commit/c6712098aeec63b836df405e9f3fce9cc7c1379f)
:   pool: Explicitly enable compressed oops to calculate correct cache size

[d1b465e](https://github.com/dcache/dcache/commit/d1b465e83b1a608f92c388343f1ea5518cbb42b3)
:   pool: Fix locking bug causing high memory usage during pool initialization

[f0cdbb4](https://github.com/dcache/dcache/commit/f0cdbb4941b3d6384337cd761c3273d4b6d10c57)
:   chimera: Fix path resolution on delete

[312606d](https://github.com/dcache/dcache/commit/312606d1b3a1a65469bd3a7a1965e98b7dbc7151)
:   xrootd: Fix 'xrootd logs stack-trace on malformed request'

[d6cb4fc](https://github.com/dcache/dcache/commit/d6cb4fce5aaa4a7b992c7b3f3384d59a1bfba472)
:       move execution of the superclass method before any concrete class initializations

[f6042b8](https://github.com/dcache/dcache/commit/f6042b8f60507a3667b64b2c915d027beef51397)
:   pool: do not list a repository during initialization

[dc93f7e](https://github.com/dcache/dcache/commit/dc93f7e1d3723145ef6ca832f2ba9502e2b2b35c)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.26

### pool

The Berkeley DB based metadata storage can sometimes fail.  Should
this happen, the pool must be restarted.  In previously releases, such
problems were logged with an unclear message and a stack-trace; the
pool would continue to operate but would fail all subsequent
transfers; nothing made it clear the pool must be restarted.  With
this release, such Berkeley DB problems will be logged with a concise
error message and the pool will be disable, making the restart
requirement explicit.

Fix regression in the migration module that could caused more replicas
to be created than was desired and could cause replication to fail
with a `No targets` error message.

### srm

In previous versions of dCache, the `ls` operation in SRM occationally
returned incomplete or inconsistent results.  This is now fixed.


### Changelog 2.11.25..2.11.26

<!-- git log 2.11.25..2.11.26 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[e3f3d89](https://github.com/dcache/dcache/commit/e3f3d895b9afdc1f297c3d42676362cc802761a9)
:   [maven-release-plugin] prepare release 2.11.26

[e5c0b9a](https://github.com/dcache/dcache/commit/e5c0b9a592ad756bc6a55eb95803431dd67463c4)
:   pool: Fix race condition in migration module

[51b771e](https://github.com/dcache/dcache/commit/51b771ee0b674188a37bed481609612c18457fb0)
:   srm: fix race condition in ls response

[cb125c4](https://github.com/dcache/dcache/commit/cb125c41964f855d3c1edabc740d72fcacb99beb)
:   pool: Disable pool on meta data failures

[9839cee](https://github.com/dcache/dcache/commit/9839ceef4a46627faf90b0fef642ac048f187437)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.25

### Changes affecting multiple services

In previous releases, dCache required a layout file be present, even
if that file was empty.  This has two negative impacts: the `dcache stop`
(typically invoked automatically when updating a package) would not work,
nodes where only scripts (e.g., info-provider) are used would require unecessary
configuration.  With this release, a missing file generates a warning but
does not prevent the `dcache stop` command or scripts from working.  This
warning may be suppressed by setting `dcache.layout.uri` to an empty string.

### httpd

The tape related queues (flush and restore) have no maximum limit, yet
both the old web information and new webadmin show a dummy maximum value
for these queues.  This meaningless maximum value is no longer shown.

### info

The info service collects information about, amongst other things,
the interface(s) a door listens on.  This is made available in
different formats.  The URL-formatted version, used by info-provider,
always used an IP address even when a name was known.  This is now
fixed.

### infoprovider

It is possible to run multiple SRM endpoints in dCache, provided certain
restrictions are upheld.  With this release, the info-provider publishes
multiple SRM endpoints correctly.

### nfs

Some shells, when attempt to overwrite a tag's content using NFS, do so
in a way that Chimera previously failed to support.  This failure was
reported back to the user as a remote I/O error.  This release fixes this
problem.

### pool

Reduce latency when a pool processes a request to start a read mover.
This improves dCache responsiveness when a client opens a file for reading.

The NFS mover uses the file's size when processing read and write requests.
For read operations, the file size cannot change.  This release takes advantage
of this to reduce the load on the underlying filesystem.

### poolmanager

Poolmanager may attempt to create additional copies of a file, only to discover
such attempts fail because of other constraints.  This leads to the log file
containing entries like `P2P denied: already too many copies` and `P2P denied:
No pool candidates available/configured/left for p2p or file already everywhere`.
With this release, such entries are logged at info level: they no longer appear
in the log file, but are available via the poolmanager's pinboard.

### webdav

Fix proxied uploads when the client does not send the file size, either
directly or via SRM; in particular, this fixes compatibility with ARC.


### Changelog 2.11.24..2.11.25

<!-- git log 2.11.24..2.11.25 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[917be16](https://github.com/dcache/dcache/commit/917be16dc0c68e58bac0b7bc80972898db9a3a06)
:   [maven-release-plugin] prepare release 2.11.25

[94e4959](https://github.com/dcache/dcache/commit/94e4959e91dfcbe055b12d3938e4ec795e510f61)
:   systemtest: fix install command in credentials command

[9448a43](https://github.com/dcache/dcache/commit/9448a43c495176d758797887ef24713a57efaf08)
:   infoprovider: remove single SRM instance limitation

[cbd26fe](https://github.com/dcache/dcache/commit/cbd26fef465f61571dff671cff12b527b961aa99)
:   info: fix url-name to publish hostname

[1b9a8fb](https://github.com/dcache/dcache/commit/1b9a8fb234df72d699e2e2269a8db4c79eeb07ab)
:   chimera: throw FileExistChimeraException if tag already exists

[67b1fac](https://github.com/dcache/dcache/commit/67b1fac7a77806058aaa7cd6825da65c3ff264b3)
:   (2.11) webadmin: do not display numerical value for max restores or stores

[8efb237](https://github.com/dcache/dcache/commit/8efb237f6d7b390b092f9f4a2567fa755c7a5551)
:   boot: Don't fail on missing layout file

[56a092c](https://github.com/dcache/dcache/commit/56a092c205803539ebbe2f765957b8488b4948c7)
:   httpd: Do now show maximum for restore and flush queues

[83942e5](https://github.com/dcache/dcache/commit/83942e5ba9702540b912f6000debe8a13badff10)
:   poolmanager: Reduce log level of p2p denial

[d02a1c9](https://github.com/dcache/dcache/commit/d02a1c94252d71a931e9a8a0500ffbf25d4a29a5)
:   webdav: Fix proxied upload with chunked encoding

[5f856dd](https://github.com/dcache/dcache/commit/5f856dd9bbe80cd02e18959b24003162a561dc88)
:   pool: simplify duplicate request handling

[90255bc](https://github.com/dcache/dcache/commit/90255bc52705220464d87f67ccdd67417e4b949b)
:   [maven-release-plugin] prepare for next development iteration

[f0a1de3](https://github.com/dcache/dcache/commit/f0a1de3d3a3eb5c5f6086e8465b91ecd651ff1f3)
:   pool: reduce load on back-end file system

## Release 2.11.24

### Changes affecting multiple services

A new security configuration option allows the dCache admin to ban all
SSL/TLS ciphers that use the RC4 cipher.  RFC-7465 states services
MUST NOT accept an RC4-based cipher suite.  Adding the `DISABLE_RC4`
option to the `dcache.authn.ciphers` makes dCache compliant with
RFC-7465.  This option is not enabled by default to avoid possible
regression with clients that require the RC4 cipher.  This property
affects dcap (with GSI), ftp (with GSI), srm, webadmin, webdav (with
SSL/TLS), xrootd (GSI plugin) services.

### pnfsmanager

Fixed ACL inheritance when uploading data through SRM.  In earlier
versions of dCache, a file uploaded through SRM failed to inherit any
inheritable ACEs from the parent directory.

This release brings some modest performance improvements when creating
upload directories.  This improvement is available automatically only
to sites that have not yet upgraded to 2.10 (or later).  Sites already
running 2.10 or later can enjoy the same improvements by deleting the
upload directory (`/upload` by default) to allow dCache to recreate
it.  **Important**: deleting the upload directory will fail any
current SRM uploads; it is recommended to do this during down-time.

### pool

The pool's migration module may be invoked with different pool
selection modes: the `-select` option.  The random selection option
(`-select=random`) excludes pools that are full, but mistakenly
considers replicas that could be deleted (i.e., non-sticky cached
replicas) as part of the used space; this treats a pool as full even
when the pool has removable files.  With this release, pools that are
full but contain some cached files are potential targets for random
pool selection.

In earlier releases of dCache, the `save` command failed to record the
stage, flush and remove timeouts for nearline storage (`rh set
timeout`, `st set timeout`, `rm set timeout` respectively).  This is
now fixed.

This release introduces the `pool.mover.nfs.port.min` and
`pool.mover.nfs.port.max` configuration properties.  Previously, pools
listened on a random port between `dcache.net.lan.port.min` and
`dcache.net.lan.port.max`; the two new configuration properties take
the two `dcache...` configuration properties as default values.  Once
the pool is listening on a particular port, it will try to listen on
the same port after restarting.  If this proves impossible, another
port is selected and will be used subsequently.  **Important:** using
the same port is important as the pool listening on another TCP port
can trigger high load on the client machine.

### Scripts

Fix JAR selection when a short-lived java process is started.  This is
typically done when using one of the scripts.

### spacemanager

Fix writing into a reservation when using a protocol that does not
provide a username or FQAN; for example, when writing into dCache
using NFS and with the `WriteToken` directory tag set.  Previously
writing would fail with a `Message processing failed: null group`
message.

### srm

The srm service can generate `RemoteException` stack traces when
dCache is behaving correctly.  These are now logged at debug level and
without a stack trace.


### Changelog 2.11.23..2.11.24

<!-- git log 2.11.23..2.11.24 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[0b576ed](https://github.com/dcache/dcache/commit/0b576edf4c4c79f482fd289ed32b2b8533731c67)
:   [maven-release-plugin] prepare release 2.11.24

[35c3355](https://github.com/dcache/dcache/commit/35c335536c68d9421937446b7ca3deacca7e1290)
:   chimera: Fix merge conflict and Java 7 compatibility

[404da75](https://github.com/dcache/dcache/commit/404da75c8b432cc4fe3075f96e2f1a15d04f83ae)
:   pool: introduce unique port number for nfs mover

[81722be](https://github.com/dcache/dcache/commit/81722be9e3f9e548e2a9c12d9085d1591dbc87eb)
:   pool: dedicated port range for nfs

[54c3c4f](https://github.com/dcache/dcache/commit/54c3c4f760b7765516c4400456d5cac5b3f94440)
:   pool: Store nearline storage timeouts to pool setup file

[3f52cb3](https://github.com/dcache/dcache/commit/3f52cb321b0ab986387556ffccd4d94c9b0fe442)
:   pnfsmanager: Create base upload directories without tags and acls

[d8062ec](https://github.com/dcache/dcache/commit/d8062ec49255e6952bf5175fffd02fdf154763e7)
:   pnfsmanager: Inherit ACLs on upload with SRM

[178ad45](https://github.com/dcache/dcache/commit/178ad451ae29a1a065e6bf06c49883eef36c535d)
:   chimera: Add ACL insert triggers for HSQLDB

[f3cbbb7](https://github.com/dcache/dcache/commit/f3cbbb75c29004ebf4ca01010ac7861303da5427)
:   Fix limited class path generation

[bbea900](https://github.com/dcache/dcache/commit/bbea90022c6db6592ede5ca3d3cbc8037369cdfa)
:   pool: Let random pool selection select pools with removable files

[64fe463](https://github.com/dcache/dcache/commit/64fe4638e774fca632b2543fc0dd20704ea3cf75)
:   crypto: allow banning of RC4 cipher suites

[71c7042](https://github.com/dcache/dcache/commit/71c7042f7755c614c9d17fdfd28af1ac7af5a96d)
:   spacemanager: Allow unowned files in reservations

[f760652](https://github.com/dcache/dcache/commit/f7606529c92b650633a78d15fdec6f59ef52509e)
:   srm: Don't log erroneous stack trace

[0704371](https://github.com/dcache/dcache/commit/0704371f6cdc654d2df28e450e074b1344eeae3c)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.23

### Changes affecting multiple services

This release upgrades the BouncyCastle version from v1.45 to v1.46.
The main motivation is to improve concurrency, so obtaining better
performance on multi-core machines.  The update affects the `xacml`
and `voms` plugins to gPlazma and any door configured to use (or that
always uses) GSI authentication: dcap, ftp and srm.  There is no
cross-dependency; domains hosting these service may be updated
independently.

### pnfsmanager

Fix possible leaked upload directory if PnfsManager takes too long to
create the upload directory.

### scripts

The `chimera` script provides both an interactive shell and the
ability to run a Chimera operation as a single command-line
invocation.  This release fixes an problem where the single Chimera
operation fails to provide the output if it is too short.

### srm

If a client releases a reservation using the SRM protocol while
another SRM client is querying for information about that reservation
then there is a risk that the reservation will appear to exist for
some 30 seconds, despite the reservation being successfully released.
This release fixes this problem.


### Changelog 2.11.22..2.11.23

<!-- git log 2.11.22..2.11.23 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[4722ed6](https://github.com/dcache/dcache/commit/4722ed6f004e2c931c9163ea84f28fee62286778)
:   [maven-release-plugin] prepare release 2.11.23

[ebe7b56](https://github.com/dcache/dcache/commit/ebe7b5602369c0857ec78d43ecfad396cf9f9dd5)
:   srm: Fix cache invalidation of space meta data

[151cba5](https://github.com/dcache/dcache/commit/151cba582d0f16b0d808885f777bda2a4137b9e9)
:   libs: Update to voms-api-java 2.0.10.1

[7e1ba45](https://github.com/dcache/dcache/commit/7e1ba4547c4b159f958619945f48dd0305d36b8a)
:   libs: use bouncycastle-1.46

[a9cf314](https://github.com/dcache/dcache/commit/a9cf314f187710be61bcf902cced557251a53207)
:   libs: update jglobus to 2.0.6.9d

[b9de736](https://github.com/dcache/dcache/commit/b9de736a624a271962814c23906149d0af4a1105)
:   chimera: Fix single command invocation of chimera utility

[37a32aa](https://github.com/dcache/dcache/commit/37a32aa1597754ee2436d7898b2263731733d971)
:   pnfsmanager: Resolve upload directory leak caused by missing reply flag

[7f76d76](https://github.com/dcache/dcache/commit/7f76d76614812cb492dbe7a2f5ec4db55ea2a936)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.22

### Changes affecting multiple services

dCache uses a standard format to monitor the performance of various
components: in the srm door to record how quickly SRM requests are
processed (`print srm counters` command), in the nfs door and pool to
monitor NFS performance (`stats` and `nfs stats` commands,
respectively), the generic cell message monitoring (`monitoring info`
command), and pnfsmanager service (the "Statistics" section in
`info`).  This release fixes a rounding error that prevents these
statistics from including long-lived requests.

### pinmanager

The pinmanager service has the `ls` command that allows the admin to
limit the results to a specific pin or all pins against some PNFS-ID.
This release fixes listing by pin id.

### pnfsmanager

With this release, the path of automatically generated upload
directories has changed slightly to improve SRM upload performance.
Previously, these generated paths had the form `<upload>/<unique-ID>`,
where `<upload>` is the value of the `dcache.upload-directory`
configuration property (`/upload` by default) and `<unique-ID>` is
some unique value (a UUID).  With this release, these directories have
the form `<upload>/<processor-ID>/<unique-ID>`, where `<processor-ID>`
is some small integer value.  Standard-conforming clients are unaffect
by this change and no action are needed by the admin from this change.

Update pnfsmanager to avoid creating temporary directories if the srm
has already discarded the request.  This helps dCache recover more
quickly when it is overloaded from SRM uploads.

### pool

Fixed pool's erroneous interpretation of the HSM timeout (4 hours, by
default) as being from when a staging request was initially received,
rather than from when it started processing the request (by starting
the HSM script or via the new plug-in mechanism).

This release fixes how a pool's invokates the HSM script.  Previously,
the pool mistakely omitted the additional arguments that an admin may
configure the pool to include.

### replicamanager

This release fixes the `Can't clear the tables` error reported when
starting replicamanager service with certain PosgreSQL versions.

### spacemanager

Fix the `update space` admin command so it can remove any ownership
from a reservation.  The reservation's owner is allowed to release the
reservation via the SRM protocol.  If the reservation has no owner, it
may only be released through the admin interface.

### srm

The `info` admin command provides details about the srm service,
including information specifically about SRM activity that can be
processed synchronously or asynchronously: get, put, reserve-space,
ls, and bring-onling.  This information describes how many requests
are in each of the possible states, one of which is `Waiting for CPU`.
This release fixes the output of the `info` command to show the
correct `Waiting for CPU` values.

This release drastically improve srm service performance when there
are a large number (e.g., thousands) of queued requests; for example,
this brings considerable improve for bulk bring-online requests.

This release also brings improved performance when the SRM has only a
few queued requests; more specifically, when the number of queued
requests is less than or equal the number of currently unoccupied
max-inprogress slots.  For example, if dCache is not processing any
GET requests then the first `srm.request.get.max-inprogress` GET
requests are processed more quickly.

Fix the srm service switching from synchronous to asynchronous
processing when processing a bulk-requests with many files; in earlier
releases, such large requests could prevent a request from falling
back to asynchronous processing.

This release fixes the srm service so it cancels corresponding
pinmanager requests when an SRM client aborts a bring-online request.


### Changelog 2.11.21..2.11.22

<!-- git log 2.11.21..2.11.22 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[4c59d41](https://github.com/dcache/dcache/commit/4c59d419c1d5df67a064721acee28132e475dd5d)
:   [maven-release-plugin] prepare release 2.11.22

[9c39979](https://github.com/dcache/dcache/commit/9c3997957d8160b7559881d84a3fcd90588c5c6b)
:   (2.11) replica manager: fix table truncation

[e4c93a1](https://github.com/dcache/dcache/commit/e4c93a135f0955522872f3eac4360a4b6d2b75f1)
:   common: Fix division by zero regression in gauges

[330e50c](https://github.com/dcache/dcache/commit/330e50cf2c8000e98d862291716bc29729c3e5e6)
:   common: Fix rounding error in request gauge

[1f7c373](https://github.com/dcache/dcache/commit/1f7c37308dd693ac5e59dd69dc76b3f44e7ec90a)
:   pnfsmanager: Discard upload path creation request on TTL expiration

[f563128](https://github.com/dcache/dcache/commit/f5631282edf2da726d08c8e24e99bd86a8b0a11e)
:   pnfsmanager: Use per-thread upload directory to reduce lock contention

[7f0e94d](https://github.com/dcache/dcache/commit/7f0e94d437756d37e1b265c564a1aa2a69ea886d)
:   srm: Optimize scheduler performance

[1fddcc2](https://github.com/dcache/dcache/commit/1fddcc287cca2e688a0facfa683219c20bfe355c)
:   srm: Further optimize SRM scheduler

[00bf725](https://github.com/dcache/dcache/commit/00bf7253e8edf7253f876ba0948711697ed82052)
:   srm: Abort pinning when cancelling bring-online requests

[cdb1c45](https://github.com/dcache/dcache/commit/cdb1c45ec88cab0d1019bdb79f2a1b15ae854ca5)
:   system-test: Enable MVCC and logging for HSQLDB

[6a9e497](https://github.com/dcache/dcache/commit/6a9e49787b4a4c6a2279badaf0b5d5b7ed605c6a)
:   srm: Fix sync to async mode timeout

[294677c](https://github.com/dcache/dcache/commit/294677c7cf2c30bd8c20ae30b7e82b36e656b4a9)
:   pinmanager: Fix listing by id

[81e5207](https://github.com/dcache/dcache/commit/81e52073c2522ce6ecc1ce09decae5de3c35b57d)
:   pool: Add HSM options to hsm script remove callout

[db48f74](https://github.com/dcache/dcache/commit/db48f74bcd458175a3f85e1c9944ebebc6f5955a)
:   srm: Fix queue size reporting

[bbda848](https://github.com/dcache/dcache/commit/bbda848a944b163e244f376b1ca5837cf79db07d)
:   pool: Fix timeout behavior of HSM requests

[7c20abd](https://github.com/dcache/dcache/commit/7c20abdf7645f715ed95e8493601e6ae944e9e98)
:   spacemanager: Allow spaces to become unowned

[5974ee0](https://github.com/dcache/dcache/commit/5974ee0049f961f19baa08c21be1428e9ed69738)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.21

### alarms

Update output of the `predefined ls` admin command.

### nfs

There was an error in how ACLs were interpreted by the nfs door where
multiple ACEs for the same user were compacted ignoring the flags.
With this release, ACEs against the same user but with different flags
are honoured.


### Changelog 2.11.20..2.11.21

<!-- git log 2.11.20..2.11.21 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[6b70d06](https://github.com/dcache/dcache/commit/6b70d06f116c3f7206729b8092b503391add58e4)
:   [maven-release-plugin] prepare release 2.11.21

[64dd236](https://github.com/dcache/dcache/commit/64dd2368c89fcfc7d32d3db13c2ed1ff256feea7)
:   cli: remove stray separator in predefined alarms printout

[092e99d](https://github.com/dcache/dcache/commit/092e99d980aa9ab85de7c5510c62e8fd1e6262ed)
:   libs: update to nfs4j-0.9.6

[fc05e23](https://github.com/dcache/dcache/commit/fc05e2338e2d462abf8ebbcd3721739066860f40)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.20

### Changes affecting multiple services

This release fixes an NFS problem triggered when a second process
opens a file that is already opened by another process on the same
computer.  The NFS specification allows the second open to reuse the
"layout" (== mover) from the first open.  With this release, the door
will detect this and reuse the existing mover; the mover is updated to
allow this.  The nfs door and all pools accessible via the NFS
protocol must be updated to this release or newer.

### dcap

No longer log a stack-trace when transfering a file if the client is
expected to connect to the pool (the "active client mode" option; the
`-A` in the dccp command) and the pool is shutdown before the client
connects.

### srm

Some SRM requests support bulk requests, where multiple SURLs are
processed in the same fashion.  The assumption was that the SURLs in a
bulk request are distinct.  Bulkd requests have been observed that
violate this assumption: a request with a SURL appears more than once.
This causes problems when staging files from tape.  With this release,
a SURL that appears multiple times in a request is processed exactly
once.


### Changelog 2.11.19..2.11.20

<!-- git log 2.11.19..2.11.20 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[ad3b0c0](https://github.com/dcache/dcache/commit/ad3b0c093d8eccb8237649c1deecfb251657deec)
:   [maven-release-plugin] prepare release 2.11.20

[85217e0](https://github.com/dcache/dcache/commit/85217e09abaa790cca8467d4beb581a4411d6566)
:   dcap: fix stack-trace when shutting down pool waiting for connection

[4186cfd](https://github.com/dcache/dcache/commit/4186cfd5cded96e97ef0ee4a667cc2f9737c7efb)
:   system-test: add regenerated host and user credentials

[d321114](https://github.com/dcache/dcache/commit/d321114ffbc37978d8e5415717d1323d5995a2d2)
:   srm: Remove duplicate SURLs in bringonline and get requests

[40d4d2a](https://github.com/dcache/dcache/commit/40d4d2a6863cb6c15f9f1a51f0b79b40322cdb23)
:   system-test: add missing dCache disposible CA certificate

[5631940](https://github.com/dcache/dcache/commit/5631940c46904246d1fc5402d1991def601bd779)
:   [maven-release-plugin] prepare for next development iteration

[dbd0fb4](https://github.com/dcache/dcache/commit/dbd0fb48502f3cbc63887b5ff53c3d92d8e8c837)
:   nfs: share mover for the same client

[ae78db5](https://github.com/dcache/dcache/commit/ae78db5e4cee4e2d7c53ddb863fe7ecd01e65bbe)
:   nfs: use NFSv4MoverHandler instead of Map in embedded NFS server

## Release 2.11.19

### Changes affecting multiple services

In previous versions of dCache deleting a directory with the last
reference to a tag did not remove that tag.  With the introduction of
upload directories this problem became acute, as many such directories
are created and deleted.  With this release, deleting the directory
with a tag's last reference is very likely (but not guaranteed) to
remove that tag's inode.  Further information about this will be made
available via user-forum.  The update affects both the nfs door and
pnfsmanager; however, most sites will see the most benefit from
updating pnfsmanager.  **Important #1** an updated nfs door will wait
for database changes that updating pnfsmanager will enact.
**Important #2** the database changes enacted by pnfsmanager can take
awhile (an hour or so for large dCache instances) as the change adds
an index to the `t_inodes` database table.

The "standard" Linux flag to mark an ACE as inherit-only is `i`, yet
previous versions of dCache accepted only 'o' as the inherit-only
flag.  With this release, both `o` and `i` are accepted.  The chimera
shell, pnfsmanager and nfs door are affected; nodes hosting these
services and scripts may be updated independently.

### admin

Restore compatibility with loginbroker information for pcells; in
particular, the problem affected information provided by the srm door.

### dcap

Previously the dcap door provided the dcap client with the wrong errno
(error number) should the client attempt to operate on a nonexisting
file or directory: `EIO` was returned instead of `ENOENT`.  This is
now fixed.

### pool

The file integrety checking (single file, entire pool one-off check
and background checking) produced ambiguous output; for example, not
being able to scan a file because it is still being uploaded counted
towards an "error" count, but no corresponding log message is
included.  With this release, the output is less ambiguous and
distinguishes between corruption, temporary and more permanent
problems.

### replicamanager

Added an admin command to query pool-manager for an updated list of
pools that are a member of the resilient pool group.  This allows
adjustments to the set of pools participating in replication without
restarting the replicamanager service.


### Changelog 2.11.18..2.11.19

<!-- git log 2.11.18..2.11.19 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[65145d6](https://github.com/dcache/dcache/commit/65145d6226a5651c28f2a26185432c3c828d7803)
:   [maven-release-plugin] prepare release 2.11.19

[0613e1f](https://github.com/dcache/dcache/commit/0613e1f8ea4b6225a5a801f27ff36c78ed649594)
:   replicamanager: add an admin command to re-fetch resilient pool group

[855206c](https://github.com/dcache/dcache/commit/855206cbef60c2fc4eee746f43bf1030b2af2b04)
:   acl: fix compatibility with linux ace

[4969347](https://github.com/dcache/dcache/commit/4969347f23eaab5e462322adbc6a46ed43efb708)
:   chimera: Delete unreferences tag inodes

[d620902](https://github.com/dcache/dcache/commit/d620902acff72dd47cedcee71d5aa4f0a70dfc27)
:   admin: Restore pcells compatibility with loginrbroker

[533655e](https://github.com/dcache/dcache/commit/533655e3dbbf6b13c3f08a95b804281bd4d3fd29)
:   pool: update scrubber messages to be less ambigous

[ea03937](https://github.com/dcache/dcache/commit/ea03937ac2a82efb7ba1c8d1a398097c229137f1)
:   dcap:  fileAttributesNotAvailable must set pass ENOENT to the client

[6604756](https://github.com/dcache/dcache/commit/6604756040cdbd29ca6854dbba2d02be447178ae)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.18

### Changes affecting multiple services

In prior versions of dCache, the `path` field that billing logs
for transfers contained the actual transfer path; i.e., for
SRM-initiated uploads this was the auto-generated path from the
TURL and not the user-supplied path from the SURL.  This proved
confusing so, with this release, the `path` field now has the
user-supplied path (i.e., from the SURL).  An additional field
(`transferPath`) has the transfer path.  While this is
not logged by default, billing configuration (the
`billing.text.format.mover-info-message` and similar properties)
may be updated to include it.  All doors used by srm clients and
the billing service should be updated.

### dcap

This version of dCache uses the connected socket when discovering the
IP address of the client for "channel binding", rather than a constant
value.  This is important for dual-stack machines (with both IPv4 and
IPv6 addresses) that host dcap doors with either gsi- or
kerberos-based authentication.

### pool

Fix parsing of certain HSM-related error messages that would previously have
failed with an index out of bounds error.

### spacemanager

In earlier versions of dCache, if a file is deleted while being
uploaded the space-manager will consider the transfer as successful
(and so using some of the reservation's capacity) whereas the pool
would delete the file immediately after the upload is complete.  Such
"leaks" results in a reservation being reported as having more used
capacity and less free capacity than it should.

### srm

The srm service maintains a counter of the number of requests for each
different type.  With earlier versions of dCache, if the srm
encounters jobs that have timed out while the service was no running, these
counters became inaccurate.  This is now fixed.

When an srm request times out, dCache may need to take some action to
"clean up"; for example, removing the upload directory.  If srm is
configured to discard all requests on start-up these cleanup
operations did not happen.  This is fixed with this release.
As a consequence, startup times will be longer.

If `srm.persistence.enable.store-transient-state` is set
to `false` (the default value) then transfer requests
do not survive an srm service restart if the limit on concurrent
transfers prevented handing out the TURLs.  With this
release, such requests survive an srm restart.

Previously, if `srm.persistence.enable.store-transient-state` is set
to `false` (as is the default) then information needed to clean up a job
might not be stored in the database.  If, after restarting the srm,
the job times out or is aborted then there is insufficient information
to clean up, resulting in upload directories not being cleaned, pins
(for bring-online requests) not being cleared, copy requests not being
cancelled and lifetime extensions being lost.  These problems are
fixed with this release.


### Changelog 2.11.16..2.11.18

<!-- git log 2.11.16..2.11.18 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[e9f5d41](https://github.com/dcache/dcache/commit/e9f5d419134b263a8733332a15bab51f23e9356c)
:   [maven-release-plugin] prepare release 2.11.18

[f702e5f](https://github.com/dcache/dcache/commit/f702e5fec4ebca919fdebd3b167de7288ac875c6)
:   all: Fix several NPEs when submitting billing messages

[4afd8db](https://github.com/dcache/dcache/commit/4afd8db0dfff354722d7d547b9581746b37d076f)
:   [maven-release-plugin] prepare for next development iteration

[8ae5f7b](https://github.com/dcache/dcache/commit/8ae5f7bc360481199552e45a4b7879821effddeb)
:   [maven-release-plugin] prepare release 2.11.17

[0b38d78](https://github.com/dcache/dcache/commit/0b38d78b4ca595ebedb649adf212c6c49c50011f)
:   srm: Fix scheduler counter initialization on restart

[d9f7517](https://github.com/dcache/dcache/commit/d9f7517bc816c5d90d73d736a084f9367268a5e9)
:   doors: Log real path in billing

[0dc26ff](https://github.com/dcache/dcache/commit/0dc26ff5bff3d824b17d17396edc435949021132)
:   srm: Allow the SRM to take action upon cleaned requests

[9439e9a](https://github.com/dcache/dcache/commit/9439e9a11a76da919bb3bbcd1fb2f8497b934b33)
:   srm: Force save jobs when adding information needed for cancellation

[89be30a](https://github.com/dcache/dcache/commit/89be30a1b87f0cb307472c3d0044dc51941c3794)
:   srm: Force save when job becomes RQUEUED

[4cca91b](https://github.com/dcache/dcache/commit/4cca91b670c92715fd11ed3777fbdb4739250b0e)
:       pools: fix parsing error in HsmRunSystem

[9d643e2](https://github.com/dcache/dcache/commit/9d643e20a10e457a7f65a28e86091995c2b99da1)
:   javatunnel: use connected socket to discover local inet address

[47d1a4b](https://github.com/dcache/dcache/commit/47d1a4bc0eadaa23fa79a2d7d51a2247edc0ab41)
:   spacemanager: Fix race condition leading to leaked files

[87c1c6c](https://github.com/dcache/dcache/commit/87c1c6c8f0a66e3bbd240120713523533545f39a)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.16

### Changes affecting multiple services

When dCache suffers a sufficiently high inrush of requests that a
cell's request queue is exhausted, new requests to that cell are
rejected.  While overall dCache handles this situation correctly
(degrading gracefully), the internal message counting and event
logging were not updated correctly.  This is now fixed.

Fix a bug that triggers a NullPointerException in webadmin.  Although
the problem is logged in webadmin, the cause is in the doors supplying
the information.  Therefore, the dcap and ftp doors are to be updated.

When publishing an IPv6 interface, do not include the zone
information.  Zone information is an extension to IPv6, which appends
a '%' plus some opaque identifier to the regular address.  Not all
clients understand this extension and reject the address as invalid.
As zone information is not useful anyway, with this release zones are
no longer published.  This update is for all doors.

Fix possible NullPointerException in httpd and admin services.

In most cases dCache will publish door URLs with a hostname; if the
address cannot be resolved then the address is used instead.
Previously IPv6 addresses were written incorrectly: without the square
brackets.  This is now fixed if the info service and the info-provider
scripts are updated.

### admin

Fix division-by-zero error when the SSH client reports zero width or
height.  This happens forcing allocation of a pseudo TTY without
having a real TTY (see the `-t` option to OpenSSH client).

### pinmanager

Fix pinmanager so it does not log a stack-trace if it failed to fetch
fresh pool status information from poolmanager while unpinning a file.

### pool

Previously, the metadata reconstruction for files where the upload was
not completed and written without the client specifying a retention
policy would trigger a stack-trace `java.lang.IllegalStateException:
Attribute is not defined: RETENTION_POLICY`.  This is now fixed.

### spacemanager

A number of sites have reported problems with the database resolving
deadlocks.  While such reports are expected and dCache behaves
correctly when they happen, this release should reduce the likelihood
of them appearing.


### Changelog 2.11.15..2.11.16

<!-- git log 2.11.15..2.11.16 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[6f73669](https://github.com/dcache/dcache/commit/6f73669b93f1ba3cd68e06a6bc918c2a1f7742f5)
:   [maven-release-plugin] prepare release 2.11.16

[d25d430](https://github.com/dcache/dcache/commit/d25d430a20fd03ac74b20e98485d0c0cec3eb518)
:   info/info-provider: publish valid IPv6 addresses

[38f902c](https://github.com/dcache/dcache/commit/38f902cde3846af63bd485357baf8d6f8069e1eb)
:   loginbroker: strip off zone off published interface name

[23c8f0f](https://github.com/dcache/dcache/commit/23c8f0f98bcf87e7df52e4d60b4010d7dca4ce4b)
:   admin: Avoid division by zero when the client reports a zero sized terminal

[9cbe06f](https://github.com/dcache/dcache/commit/9cbe06f8b3b6b211afcff416fb36b1cba6869f18)
:   spacemanager: Optimize space record deletion

[23c4fe0](https://github.com/dcache/dcache/commit/23c4fe03102be6ed9f957a9b053c00e14707d546)
:   dcache: Make cell communication use the correct timeout

[c5416a2](https://github.com/dcache/dcache/commit/c5416a2ef270644e0ee9527df851c5b3fdca7bf0)
:   httpd,admin: Fix NPE in transfer collectors

[f01e67c](https://github.com/dcache/dcache/commit/f01e67c50b09601a93122f6a26180a869b8de132)
:   doors: Fix race condition that causes NPE in webadmin

[7b9f5f0](https://github.com/dcache/dcache/commit/7b9f5f06c65d2acb27547b4afd9ff28b87cb3149)
:   cells: Fix event queue counting bug

[21d1f04](https://github.com/dcache/dcache/commit/21d1f048856d562bcf77498f9c84a1943381da47)
:   pinmanager: Don't log stack trace when unable to fetch pool monitor

[c9360d0](https://github.com/dcache/dcache/commit/c9360d0eb34ed2d8e94c87fc2adbca01bf7f4851)
:   pool: Fix meta data reconstruction

[b000b90](https://github.com/dcache/dcache/commit/b000b90436ea40f299cca408b12d1cba12434295)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.15

### Changes affecting multiple services

Avoid potential message loop when both sender and receipient domains
are restarted while the message is in-flight.

### admin

pcells distinguishes between a failure to send a message to a
cell and that cell taking too long to respond.  Support for
that distinction was lost with 2.10; with this release, it is
restored.

The tab-completion feature of admin parses the help-hint to discover
what expansions are available.  This has been updated to support
more commands.

### httpd

Fix compatibility with pcells.  This requires a corresponding update to pcells.


### Changelog 2.11.14..2.11.15

<!-- git log 2.11.14..2.11.15 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[5ed59c4](https://github.com/dcache/dcache/commit/5ed59c4ca0e1eab990671bb8e93506edce7643c7)
:   [maven-release-plugin] prepare release 2.11.15

[19d31f6](https://github.com/dcache/dcache/commit/19d31f66345e8e77d66dc4adb71baf4dba3c67bd)
:   admin: Fix command completion

[6046451](https://github.com/dcache/dcache/commit/604645108f3712f36a7536221c9f398e67a466fb)
:   admin: Propagate NoRouteToCellException to pcells

[a549cd7](https://github.com/dcache/dcache/commit/a549cd750cc4d7e4b3fc8feedd92a9a645fd5117)
:   cells: Restore CellExceptionMessage encoding

[90c9976](https://github.com/dcache/dcache/commit/90c9976bc838a217b78e275ceacd1f92dd24e592)
:   httpd: Fix pcells compatibility

[c975871](https://github.com/dcache/dcache/commit/c975871b4c4f45012a85118966c853548e896a33)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.14

### admin

Restore support for pcells to gracefully handle timeouts.

Restore compatibility for pcells when querying space-manager.

### cleaner

Fix bug reported as `java.lang.ClassCastException: java.lang.String
cannot be cast to [Ljava.lang.String;`.

### nfs

Provide a better cache of the FsStat information.  Amongst other
things, this improves the responsiveness of the `df` command.

### pool

Fix pool reconstruction.  If, on startup, the pool detects it is in an
inconsistent state it will attempt to recover from that.  With this
release, this should work.

### srm

Update SRM default property values.  From various reports, it is clear
that the current default values are not ideal for many sites.  The
following properties are adjusted:

* `srm.limits.jetty-connector.backlog` increased to support bursts of
   activity; a larger value may be appropriate but not available due
   to default Linux configuration.

* `srm.request.threads` reduced as processing is asynchronous.

* `srm.request.ls.threads` change default to be
  `srm.request.ls.max-in-progress` as `ls` requests are blocking.

* `srm.request.max-requests` increased to satisfy user-demand; needed
   as clients typically request more concurrent TURLs that they make
   concurrent requests.

* `srm.request.max-transfers` increased to same value as
  `srm.request.max-requests`.  This way (by default) dCache never
  blocks requests pending a client returning a TURL.

* `srm.persistence.remove-expired-period` increased to 10 minutes to
  reduce stress on the database.

* `srm.service.pnfsmanager.timeout` decrease to two minutes as
  PnfsManager should respond within that time and clients will likely
  disconnect if they don't hear a response within that time.

* `srm.service.spacemanager.timeout` decrease to 30 seconds as the
  service should respond quickly.

* `srm.protocols.disallowed.get` and `srm.protocols.disallowed.put`
  now include `file` protocol by default.

* `srm.protocols.loginbroker.timeout` decrease to 20 seconds as this
  is a very light-weight service.

Support catching and logging some bugs that previously would be
silently ignored.

Fix a ConcurrentModificationException caused when SRM processes two
requests close tegether.


### Changelog 2.11.13..2.11.14

<!-- git log 2.11.13..2.11.14 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[fed09f8](https://github.com/dcache/dcache/commit/fed09f8097ee79634c2e6905f83fd895ff488b0a)
:   [maven-release-plugin] prepare release 2.11.14

[877a5ae](https://github.com/dcache/dcache/commit/877a5aec111fcfa318dbd9f279f1a8e47bb0c470)
:   admin: Restore pcells compatibility

[3624857](https://github.com/dcache/dcache/commit/3624857fbd5c2aeb1137c487a32dccfd1ca026fd)
:   srm: log more SRM bugs

[d16a878](https://github.com/dcache/dcache/commit/d16a8782bd2a2a0ea6b851637e100e8bc935cd97)
:   admin: Restore timeout semantics for pcells compatibility

[d6d5d46](https://github.com/dcache/dcache/commit/d6d5d46d4b45328eaba97a759127f578896de17c)
:   cleaner: Fix class cast exception

[3b9b54b](https://github.com/dcache/dcache/commit/3b9b54b1031ab97bf21b02be47e85d760b78a44b)
:   srm: Use more sensible default values

[0177d04](https://github.com/dcache/dcache/commit/0177d044b16bd63b2a0d75b4fd0c4db366b4b92e)
:   srm: Fix ConcurrentModificationException in Axis

[9469e73](https://github.com/dcache/dcache/commit/9469e73754abf70ea69181d0020e618ac075e09e)
:   pool: Fix pool entry reconstruction

[cf51c39](https://github.com/dcache/dcache/commit/cf51c3964b9e40846e6e2e7688304572f64816f4)
:   [maven-release-plugin] prepare for next development iteration

[a03e827](https://github.com/dcache/dcache/commit/a03e82706ee72310b6e0200b87dddb1024f7bc62)
:   chimera: do not maintain time-based cached value of FsStat

## Release 2.11.13

### Changes affecting multiple services

This release improves the quality of information recorded when logging
problems and fixing synchronization of lease time.  This affects the
nfs door and pools.

### pool

When a client reads a file, the pool reads blocks of data from the
local filesystem.  When reading such a block, the pool could receive
fewer bytes than requested.  Previously, the pool assumed that this
only happens when the end-of-file is reached; however, this is not
guaranteed.  Should this assumption be violated then the data sent to
the client will be corrupt.  In practise, the pool's assumption is
true for Linux and local filesystems; however, the code has been
updated to remove this theoretical cause of corruption.

Fix a problem where a door can trigger the pool to post-process a file
many times.  Each trigger starts a new thread, resulting in very large
system load.

Fix that, during startup, the pool would fail when recovering a broken
file that has access-latency and retention-policy determined by
spacemanager.

Extend the nearline SPI so it provides plugins with the file's path
and provides an easier way of report errors.

### spacemanager

Improve the logging and handling of transitory errors.


### Changelog 2.11.12..2.11.13

<!-- git log 2.11.12..2.11.13 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[fe10021](https://github.com/dcache/dcache/commit/fe10021127f13efd38d721762281c5e0527adb60)
:   [maven-release-plugin] prepare release 2.11.13

[a43d7a0](https://github.com/dcache/dcache/commit/a43d7a0c5e1e279ade66beee8c8c0456aec6f5e4)
:   pool: Fix and align pool meta data recovery with current pnfs manager

[53aecd7](https://github.com/dcache/dcache/commit/53aecd7afc778e6b32987e0a49927e248f543eae)
:   pool: ignore duplicated mover kill requests

[f6f4ae3](https://github.com/dcache/dcache/commit/f6f4ae351daa3d239efc9732f43c29f81ab4a1d5)
:   spacemanager: Making logging and handling of transient errors more robust

[879fd51](https://github.com/dcache/dcache/commit/879fd51b29030c620ae361b408cb2a63be5c2413)
:   pool: Fix read corruption in HTTP mover

[842977f](https://github.com/dcache/dcache/commit/842977f0b6a9731936419bc430af730cdc11ccef)
:   pool: Extend nearline storage SPI with path and custom error codes

[e0a10bd](https://github.com/dcache/dcache/commit/e0a10bd4f651f711d356d51eaa6510523bbc7485)
:   libs: update to nfs4j-0.9.5

[3564478](https://github.com/dcache/dcache/commit/356447806993847fd403765ee2709f73912cb7e9)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.12

### Changes affecting multiple services

If a bug is found in dCache then it should be logged.  For the older
admin commands, an uninformative message was logged.

The LocationManager service is started automatically in the broker
domain (typically `dCacheDomain`).  This answers requests from other
domains with instructions on how to connect to the dCache cluster
(typically a star topology, other domains connecting to the
`dCacheDomain`).  With this release, the FQDN is sent rather than the
hostname name.  The node hosting the broker domain should be updated.

Previously, if a client attempts to write a file with Access Latency
and Retention Policy that conflicts with the selected reservation a
stack-trace was logged.  This is now fixed: both the FTP door and
spacemanager should be updated.

Previously, if a bug was discovered when starting up a service dCache
would abort starting up with a non-informative log message.  Now, the
stack-trace is logged.

### dcap

Fix a typo that resulted in the GSI-based and auth-based dcaps
listening on the wrong port by default.

### nfs

Log abandoned movers with the corresponding stateid.

### pnfsmanager

When writing into dCache with SRM, the Access Latency (AL) and
Retential Policy (RP) may be specified or omitted.  Additionally, the
client may specify a space reservation into which the file should be
written.  If the client specifies both, they must match.

In dCache, there are three mechanisms to support a client that
specifies neither AL/RP nor space reservation: the directory can have
`AccessLatency` and `RetentialPolicy` tags, the directory can have the
`WriteToken` tag, there are a system-wide default AL/RP values.

Previously, dCache would reject uploads where the user-supplied AL/RP
information does not match the AccessLatency/RetentialPolicy tags,
despite the latter being intended as default values.

With this release, if the client specifies neither space token, AL or
RP then the directory tags will be used.  If a directory specifies
both `WriteToken` and `AccessLatency`/`RetentionPolicy` tags, then
these have to be consistent.  If the directory conains a `WriteToken`
tag and the client specifies AL/RP, then the client specified values
have to be consistent with the `WriteToken` tag.

### pool


When attempting to upgrade non-precious and non-cached files (e.g. a
file marked `broken`), the receiving end of the migration module would
answer twice: first (correctly) with a failure and then (incorrectly)
with a success.  This is now fixed.

### spacemanager

With RDBMs, transactional deadlock rollbacks are normal behaviour,
which happen when the database must choose between two conflicting and
concurrent changes.  Previously, spacemanager would aggressively retry
when this happens.  This has been observed to trigger performance
degradation.  This release includes several strategies to minimise the
impact of this.

Previously, the default number of space-manager threads was the same
as the number of database connections.  This does not take into
account that there is background activity that also needs access to
the database.  With this release, the number of threads has been
lowered; having a large number of threads also increases the
likelihood of seeing transactional deadlock rollbacks.

Fix the shutdown sequence of spacemanager.  Previously, shutting down
a busy spacemanager could lead to attempts to modify the database
after all database connections were closed; such failures were logged.

Reduce logging on various DB errors; generic transient errors are now
warnings and transactional deadlock rollbacks are logged at debug
level.


### Changelog 2.11.11..2.11.12

<!-- git log 2.11.11..2.11.12 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[331b934](https://github.com/dcache/dcache/commit/331b93481f6add901a5545e1e911e3effd64d08a)
:   [maven-release-plugin] prepare release 2.11.12

[3985c5e](https://github.com/dcache/dcache/commit/3985c5ee3a40d5387ac1f2202b421be3dd8815ef)
:   LocationManager: Use fqdn instead of hostname

[42dcac4](https://github.com/dcache/dcache/commit/42dcac4841bc8eeeee5909d3e28f25939f6a53c4)
:   spacemanager: Controlled shutdown

[82a24d3](https://github.com/dcache/dcache/commit/82a24d3714161978890b8a711a34ee389295e2ae)
:   spacemanager: Make request processing more robust

[d68115b](https://github.com/dcache/dcache/commit/d68115bc75227c4df0dff489e6e6a2bb434de801)
:   spacemanager: Reduce log level on various transient DB errors

[f820942](https://github.com/dcache/dcache/commit/f820942fa347d79f8a90b2e55fe7b92bb355173d)
:   spacemanager: Minor simplification to link group updates

[1275b07](https://github.com/dcache/dcache/commit/1275b0760a27dd6873a53e28ec9f4e41ef5b191e)
:   spacemanager: Don't log stack-trace on AL/RP/Reservation conflict

[21bc585](https://github.com/dcache/dcache/commit/21bc585216b7f9c5ac20a138ee4b0f385eda3de3)
:   spacemanager: Lower default for number of threads

[324caca](https://github.com/dcache/dcache/commit/324caca3738b8eb4f06c3e737dce6db0404ae81e)
:   nfs4: log abandoned movers with WARN

[825f790](https://github.com/dcache/dcache/commit/825f790791890a4cd0a8cd5e919ac6c8ec660f85)
:   dcap: Fix typo that causes GSI and auth dcap to use the wrong port

[9206f80](https://github.com/dcache/dcache/commit/9206f80014b16c5ad42fc37a48ac879c020ee4b9)
:   cells: log bugs found by CellShell

[41f1e23](https://github.com/dcache/dcache/commit/41f1e23b5a7974322db131bd12e63209d504e8eb)
:   cells: fix how bugs are reported from ac_ command.

[3231098](https://github.com/dcache/dcache/commit/3231098099f22c692eeab6a96dddf18bd373ca2f)
:   pool: Fix bug in migration module upgrade logic

[44c4727](https://github.com/dcache/dcache/commit/44c4727a76a6671188e721e8e9126c77bdced1a7)
:   pnfsmanager: Fix upload to space token that conflicts with AL and RP tags

[21703ff](https://github.com/dcache/dcache/commit/21703ff18964abb422b99ba0cc029f3157421ba3)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.11

### Changes affecting multiple services

Various scripts, including the `dcache` command, invoke the `java`
command with a list of directories in which Java should look for
support libraries.  Previously, the current working directory was
(mistakenly) included in that list.  This could lead to odd behaviour;
one particular example is running a `dcache database` command from the
`/etc/dcache` directory.  This release fixes this problem by excluding
the current directory.

Normally, if running an admin command in some cell triggers a bug then
the log file of the domain hosting that cell will contain a
stack-trace.  Previously, for certain admin commands (spacemanager and
`sweeper ls` in the pool) this did not happen.  This is fixed with
this release of dCache.

When there is some problem in the communication between domains and
error message is logged.  Previously the explanation for the problem
was logged as "null".  With this release, a more descriptive
explanation is provided.

The help text within the chimera CLI and for the pool's migration
commands was badly formatted; this release fixes this.

### spacemanager

By default, when logging messages some contextual information is
included (in square brackets).  This typically includes the cell name
and the kind of activity that triggered the log message.  Previously,
some messages omitted all contextual information, which is fixed with
this release of dCache.

Fixed the `ls spaces` and `ls files` commands so they do not fail if
there is a reservation without an owner.

All space-reservations may have an owner: a username or an VOMS group;
ownership may be further restricted by VOMS role.  When created
through the admin interface, a reservation's ownership is optional.
With previous versions of dCache, if a space-reservation has no owner
then anyone can release it.  With this release of dCache, a
reservation without an owner may only be released through the admin
interface.


### Changelog 2.11.10..2.11.11

<!-- git log 2.11.10..2.11.11 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[3502237](https://github.com/dcache/dcache/commit/350223786f52e27e54f76e9080f2cf3ce7304955)
:   [maven-release-plugin] prepare release 2.11.11

[d6663cc](https://github.com/dcache/dcache/commit/d6663ccd20dfc9cd29df669b18cffd3793f541cf)
:   spacemanager: Change release authorization for unowned reservations

[6907a8c](https://github.com/dcache/dcache/commit/6907a8cb3aac822b52de3004262e8f27e198b7f1)
:   Fix valueSpec help parser

[d55e512](https://github.com/dcache/dcache/commit/d55e5122d20ef64eced589556199b176f6ee938e)
:   spacemanager: Fix NPE in listing space reservations

[4b3f32c](https://github.com/dcache/dcache/commit/4b3f32cde0ab139148e1dedd4e411ec4adc84bd1)
:   Maintain CDC of threads in decorated thread pool

[717520d](https://github.com/dcache/dcache/commit/717520d59f651f9a12e614ab797865368ffc2bb6)
:   spacemanager: Log unexpected exceptions

[6d566d6](https://github.com/dcache/dcache/commit/6d566d699bc26ea39ed8f7c680977af7f276e712)
:   tunnel: use toString if IOException#getMessage returns null

[f1a8a4b](https://github.com/dcache/dcache/commit/f1a8a4b142eeb1f48bf5ed4849ae4caa04c2bebb)
:   Exclude cwd from classpath

[8470f23](https://github.com/dcache/dcache/commit/8470f23b8999cda67bf9c59dab47a9d3c52ad773)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.10

### Changes affecting multiple services

Fix potential database connection leak for nfs door and pnfsmanager
service.  This was triggered when attempting to create an already
existing non-zero level via the `.(access)` or `.(use)` dot commands.

This patch fixes a race condition in Chimera that affects the nfs door
and the pnfsmanager service.  The effect is that, if two clients
attempt to delete the same target (a file, link or directory) at the
same time then the nlink count for the parent directory is decreased
twice.  "At the same time" means within the time taken to process the
deletion; this is instance-specific but should be much less than 1 ms
for well-configured systems.  Sites can repare any incorrect nlinks
with the following SQL:

    UPDATE t_inodes SET inlink = (
        SELECT COUNT(*) FROM t_dirs  WHERE t_inodes.ipnfsid = t_dirs.iparent
    ) WHERE itype = 16384;

This is safe to run on a running production instance, but may take
some time and will affect dCache's responsiveness while running.

### gplazma

The description for how to migrate away from using the forbidden
`useGPlazmaAuthorizationModule` and `useGPlazmaAuthorizationCell`
properties had caused confusion.  The description has now been updated
to be more explicit.

### httpd

Fix filtering boxes and sorting on Pool Admin, Pool Usage, Poolgroups,
Space Tokens and Tape Transfer Queue.

### pnfsmanager

When a user uploads a file via SRM, a directory is created under the
update directory (`/upload` by default).  Should this fail, the upload
will fail; however, this was not logged.  With this release,
pnfsmanager now logs why such failures happened.

### pool

Previously, the NFS mover stopped when the client disconnected.  This
had two problems: a client that never connects to the pool leaves a
mover that never dies and file transfers are not robust against
transitory networking problems, despite the client attempting to
reconnect.  The latter problem is particularly bad when writing data
as falling back to the door is not supported and such failures are not
handled well by the Linux kernel.

With this release of dCache, if the client is not connected then the
mover queries the door every 7.5 minutes to check it is still needed.
The mover dies only when the client closes the file, the door declares
the client is lost or the nfs door is stopped or restarted.

**IMPORTANT** Any pool upgraded to this version of dCache that is used
for NFS transfers requires all NFS doors to be upgraded to this
version or newer.

Currently, if there is a problem while a file is being uploaded using
HTTP chunked transfer encoding then dCache will contain an incomplete
file with no error mentioned in any log.  With this release, such
partially uploaded files will still exist (due to the partial upload
semantics of pools) but the problem is logged on the pool and with
billing.

### spacemanager

Add a `-blocking` option to the `update link groups` admin command to
ensure all subsequent commands will use the updated information.

### srm

When uploading files, the client may choose not to specify an access
latency, a retention policy or a space reservation for these files.
Likewise, when reserving space, the client may choose not to specify
an access latency for the reservation.  Previously, the detailed view
of the admin `ls` command showed `null` for these fields if the client
did not specify them.  With this release, those fields are omitted if
they have no useful data.

Uploading a file with SRM involves three steps: preparing for the
upload (`srmPrepareToPut`), uploading the file, marking the upload
finished (`srmPutDone`).  The third step can fail but previously the
response from dCache is always `Upload failed.`.  With this release, a
meaningful error message is returned.


### Changelog 2.11.9..2.11.10

<!-- git log 2.11.9..2.11.10 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[958f95d](https://github.com/dcache/dcache/commit/958f95d821013354c77d8ea1806ae59c98c7bf59)
:   [maven-release-plugin] prepare release 2.11.10

[2e2af56](https://github.com/dcache/dcache/commit/2e2af5615b3bf52fe03e2969d7bf34a35d1c06d5)
:   pool: Propagate HTTP mover failures to pool

[1038b1d](https://github.com/dcache/dcache/commit/1038b1d318c86c3d91928063efca813cecb4f951)
:   chimera: fix potential transaction leak on error path§

[ff87157](https://github.com/dcache/dcache/commit/ff87157c58fea9c55a9259931d959411295af77d)
:   gplazma: update error message for forbidden properties

[d214784](https://github.com/dcache/dcache/commit/d214784e18878b633a628491c4287c6a844cd073)
:   spacemanager: add blocking option to update link groups command

[6b13868](https://github.com/dcache/dcache/commit/6b13868631958cb270e4e4406f640d1d8f56d607)
:   srm: don't list absent information in ls

[8a2a289](https://github.com/dcache/dcache/commit/8a2a2893eb1d594928fda132bf63be4b00cf9702)
:   pnfsmanager: log problems when creating upload directory

[4d06447](https://github.com/dcache/dcache/commit/4d06447c83e25697b545aebddf507ee545f9329d)
:   (2.11) webadmin: make jquery selector specific to individual tables

[25c16bb](https://github.com/dcache/dcache/commit/25c16bbbe46a59f59c6a7574ad5a7fa0ff63244f)
:   (2.11) webadmin: restore missing components to respect jquery script options

[c1fbc7f](https://github.com/dcache/dcache/commit/c1fbc7f2cf0ae756292e14303a96ad9ae5494113)
:   srm: include the reason why upload failed

[f879dc8](https://github.com/dcache/dcache/commit/f879dc856b6f943bb0b47cdb7f29754a9ee5e0a4)
:   chimera: fix race condition on remove

[25d6021](https://github.com/dcache/dcache/commit/25d6021f8c097e093e4558a69d185b68bb60e1e0)
:   webadmin: ensure unique id attributes for all (currently) tested UI elements

[a14c10b](https://github.com/dcache/dcache/commit/a14c10b74ef1d974d3f1ae157b41a25a7967600b)
:   pool: update NFS transfer service to validate inactive movers

[8433507](https://github.com/dcache/dcache/commit/84335074a7d56fbf38103d77cd83931add52fa72)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.9

### ftp

Fix default value for `ftp.authz.readonly` for plain (unencrypted)
doors.  This restores the default value to the dCache v2.6 default
value of `true`.

Add the DN of a user in the access log file for "Grid FTP" access.

The response from the plain (unencrypted) ftp door if the user
specifies the wrong password is badly formed.  Althogh it is possible
that some clients are robust against such incorrect responses, with
this release the ftp door responds correctly.

### nfs

Prevent leaking memory if a client's data transfer is proxied (i.e.,
no use of pNFS) and there is a communication error between the pool
and the nfs door.

### webdav

Fixes a bug where, if a double-slash is present, all parts of the path
leading up to the double-slash are ignored; for example, with the bug,
a path like `/a/b//c/d` is handled as if `/c/d` was specified.  With
this release, double-slashes are treated like single slashes; the
above example is handled as if `/a/b/c/d` was specified.

Fix the NullPointerException triggered if client attempts to upload a
file as a child of some existing file.


### Changelog 2.11.8..2.11.9

<!-- git log 2.11.8..2.11.9 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[03ae138](https://github.com/dcache/dcache/commit/03ae138c44d8222037466c6d0c53802b2839e586)
:   [maven-release-plugin] prepare release 2.11.9

[425e3a1](https://github.com/dcache/dcache/commit/425e3a198c14a6659070268d73b5ac36b5876a23)
:   ftp: fix response if user fails to authenticate to weak FTP door

[aefbf0a](https://github.com/dcache/dcache/commit/aefbf0af3c6a7b481987a615580a79b9c417aebf)
:   nfs-proxy: remove proxy adapter on IO errors

[ce99f22](https://github.com/dcache/dcache/commit/ce99f22749bae65141750020c69e9a5c5796c9b4)
:   ftp.authz.readonly is by default set to the string

[781b1f5](https://github.com/dcache/dcache/commit/781b1f527a4cff05dd7564b314e52b6d80ab1acb)
:   webdav: fix double-slash bug by upgrading to patched milton

[abcdb54](https://github.com/dcache/dcache/commit/abcdb54e166c5dbce67eebcb381c9b900a19402a)
:   webdav: fix NullPointerException when PUT as a child of a file

[e2431a8](https://github.com/dcache/dcache/commit/e2431a8ac1871eaa74f0f2aa6a3d1f3e16f61220)
:   ftp: add user to access log

[3c4f8cf](https://github.com/dcache/dcache/commit/3c4f8cf84e6b27cdf5117ddf45911a0e62b28b66)
:   srm-client: reduce default logging for srmfs

[5efe3cc](https://github.com/dcache/dcache/commit/5efe3cced9776629f776c50a5962c99e8303498a)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.8

### httpd

Fix two minor issues when authenticating with the webadmin interface:
"unauthorised access" and being redirected to the home page.  The
unauthorised access error can occur when selecting "Login" under the
bird logo (top right corner); this is now fixed.  The redirection
problem occurs when selecting a tab that requires administrative
privileges while not logged in; this redirects the browser to the
login page.  Previously, after a successful login, the browser was
redirected to the home page.  Now the browser is redirected to the
selected tab.

### info-provider

The previous bug-fix release of dCache included a regression in the
info-provider.  The SRM endpoint URL (which starts `httpg://`) omitted
the port number.  This is now fixed.

### nfs

dCache v2.11.4 introduced support for different levels of write
stability.  Unfortunately, this exposed a bug in the Linux kernel,
which is fixed with Linux v3.16.  As a work-around, this release
removes different-write-stability support.

### pool

Fix logging that the HTTP mover returned an error so that a generic
message ("An unexpected server error has occurred.") is logged if no
more concrete message is available, rather than "null".

### srm

The `info` command in the `srm` service shows the current number of
requests in each state for each request-type, along with the maximum
allowed.  Previously, the total failed to include requests in `READY`
state.

### webdav

A previous bug-fix release fixed how dCache responds when the client
attempts to `DELETE` a non-existent file.  Unfortunately, this
triggered a different problem where such activity results in a
stack-trace that starts `java.lang.ClassCastException:
java.lang.String cannot be cast to javax.security.auth.Subject`.  This
second problem is now fixed.


### Changelog 2.11.7..2.11.8

<!-- git log 2.11.7..2.11.8 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[93d9550](https://github.com/dcache/dcache/commit/93d9550727667b67cd858dffc5d70df0b6bd623d)
:   [maven-release-plugin] prepare release 2.11.8

[3b88eed](https://github.com/dcache/dcache/commit/3b88eed6f078294ee03d3b980f9fc2b538b72227)
:   Revert "info-provider: fix publishing SRM port number"

[44fd387](https://github.com/dcache/dcache/commit/44fd3871f9b822e7010b6ac8032d3f6b7bc00571)
:   pool: Fix logging in HTTP mover

[8f9628c](https://github.com/dcache/dcache/commit/8f9628c59cb7eea404c1cbcc15d476ad6055cfd1)
:   srm: Fix calculation of total number of requests

[d43ff04](https://github.com/dcache/dcache/commit/d43ff04c61e779a98b60633d9645b884d412b1ac)
:   webdav: Alternative to fixing return code of DELETE of absent file

[a5ff2cc](https://github.com/dcache/dcache/commit/a5ff2cca926abe57bff5ef7251a02f7e4ff78452)
:   nfs: always reply FILE_SYNC4 on write

[97dc4fc](https://github.com/dcache/dcache/commit/97dc4fc4ea6f18f71097f18a9eb0db48126ed5f7)
:   (2.11) webadmin: fix login redirect bug

[3fb9619](https://github.com/dcache/dcache/commit/3fb96192d5fb3a0eb0ada0aefbdd090b42646a8b)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.7

### Changes affecting multiple services

The webdav and srm doors log SSL handshake failures as "General
SSLEngine problem".  With this release, a more meaningful error is
reported.

Reduce memory usage by avoiding multiple instances of common strings.
Although this improves many services, pools are most affected.

Previous dCache releases included some of the code necessary for
pcells, even though dCache made no use of this code.  As part of
on-going consolidation effort, this code has now been removed from
regular dCache releases.

The `cell.name` is a core property within dCache.  Its omission (most
easily, by forgetting to specify `pool.name`) prevents the `dcache`
script for working.  The script is now robust against such errors.

If the `dcache check-config` command discovers that a deprecated
property is being configured, it looks for the alternative property
that should be used instead.  In earlier releases, under certain
circumstances, the wrong alternative property is selected.  This is
now fixed.

It is possible that a sudden burst of activity from many clients
exceeds dCache capacity to queue such requests.  Although dCache is
designed to degrade gracefully under such circumstances, there existed
the possibility of certain requests becoming stuck or memory leaking.
This is now fixed.

### info-provider

In previous releases, the info-provider assumed the broker domain is
`dCacheDomain`.  This assumption has been removed.

### nfs

Upgrade to nfs4j v0.9.4, which brings several improvements to the
door: adds the `pnfs` and `nopnfs` export options to allow or disallow
PNFS.  Fix export parsing if a host is mentioned multiple times; note
that `localhost` must now have an explicit entry in the exports file.
Fix a potential deadlock when closing a file on a busy door.

Allow an nfs door to avoid being published to loginbroker.  Not being
published in loginbroker means the door is unavailable to SRM and is
not published by info-provider.

This release adds the `kill client` command, which tells the door to
simulate being restarted to a specific client while leaving the other
clients unaffected.  This is useful when resetting a confused NFS
client.  This command should not be necessary.  If useful, using this
command points to a bug elsewhere.  Therefore, such uses should be
reported to the dCache developers.

### pinmanager

If the maximum concurrency (`pinmanager.cell.threads.max`) exceeds
the number of database connections
('pinmanager.db.connections.max') then there is a risk of pinmanager
becoming deadlocked under heavy load.  This release reduces the
default maximum concurrency to avoid this.

### pnfsmanager

Fix NullPointerException when a file is stored in a directory with an
empty tag.

### pool

Upon reloading the pool configuration an error is produced when an
nearline storage was already defined in the existing
configuration.  This is now fixed.

A recent release fixed a bug that caused
`pool.mover.ftp.allow-incoming-connections` to be ignored.  Fixing
that bug revealed another that caused the property to have the
opposite effect.  This is now fixed.

dCache pool configuration allows passing (fixed) arguments to the HSM
script.  In earlier releases, these arguments were supplied to the
script in an arbitrary order.  While HSM scripts should not depend on
the order, they might; so, with this release, the order is preserved.

### webdav

Although dCache behaves correctly if the client interrupts a proxied
transfer; however, this is logged as a bug.  This is now fixed.

Make HTTP third-party copy feedback and detecting when client
disconnects more robust against internal dCache problems.


### Changelog 2.11.5..2.11.7

<!-- git log 2.11.5..2.11.7 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[7681aec](https://github.com/dcache/dcache/commit/7681aec8648bd4f474b0e833e60c7dfad97cbb94)
:   [maven-release-plugin] prepare release 2.11.7

[61546fa](https://github.com/dcache/dcache/commit/61546faa2035eb77b47c7c27f752b16609321933)
:   info-provider: fix publishing SRM port number

[1900b32](https://github.com/dcache/dcache/commit/1900b32b596ce2a04312aa00656d9df016ef39f5)
:   [maven-release-plugin] prepare for next development iteration

[a80959d](https://github.com/dcache/dcache/commit/a80959d6385125f11cabd062f74b9b722553e77e)
:   [maven-release-plugin] prepare release 2.11.6

[3966630](https://github.com/dcache/dcache/commit/396663020e66042991862587e0e8061aa05f7347)
:   webdav: don't log a stack-track when proxy transfer is interrupted

[b27b555](https://github.com/dcache/dcache/commit/b27b555ff384d27c013ec88660063829c276c793)
:   info-provider: remove dCacheDomain assumption.

[1aa9550](https://github.com/dcache/dcache/commit/1aa9550f17eace42ba11db763068f2d0bfa1ca34)
:   fix broken commit

[1a9e691](https://github.com/dcache/dcache/commit/1a9e6911036f337546fd65001961cd5421cda306)
:   webdav: make progress markers more robust

[61ba9d1](https://github.com/dcache/dcache/commit/61ba9d1df9446a5e6257fc6a54ac765faa1ae96b)
:   Fix compilation with Java 7

[2ba017b](https://github.com/dcache/dcache/commit/2ba017b2a295bdc251a8dd5ecccabb91a1d50dec)
:   pool: Fix regression preventing configuration to be reloaded

[fc42087](https://github.com/dcache/dcache/commit/fc42087529811d98e201fe62bb1b73c5822797f8)
:   cells: Fix message timeout in case of thread pool overflows

[6e59e20](https://github.com/dcache/dcache/commit/6e59e205c02414d06239776a7acb4806911b4bf7)
:   chimera: handle NULL field of directory tags

[5ddeb26](https://github.com/dcache/dcache/commit/5ddeb26ca08fcba0e3edf7c189a3cf14578f5c9f)
:   pinmanager: Adjust pinmanager defaults

[231e5cf](https://github.com/dcache/dcache/commit/231e5cfc4888baf3307b3ba21193db41f35c3dd6)
:   Internalize common strings in StorageInfo

[27a8c05](https://github.com/dcache/dcache/commit/27a8c05a58c0cd98b14ac72a5d8b21b6808d6f6a)
:   bootloader: Don't fail on missing cell name

[603334c](https://github.com/dcache/dcache/commit/603334cbd878307dd31a688345a0c4376f089ea0)
:   check-config: fix warning for deprecated properties

[e75afd3](https://github.com/dcache/dcache/commit/e75afd340d833cd241f05ef130dcaed76f3365b4)
:   (2.11) gitignore additions for IntelliJ

[71ef741](https://github.com/dcache/dcache/commit/71ef74113dedb18bb4c6ce6d0828b63c69c9bf10)
:   libs: move to nfs4j-0.9.4

[e1d6930](https://github.com/dcache/dcache/commit/e1d6930215adc64a8baf3ebbf2468c4a29cbcf2c)
:   nfs4: add command to kill client by server short hand id

[fb78d4e](https://github.com/dcache/dcache/commit/fb78d4ed22fcecd2786b543d8773a007c3a362a1)
:   webdav,srm: provide useful log messages for SSL handshake failures.

[3f879f2](https://github.com/dcache/dcache/commit/3f879f23aeaecd491148b5f4bb580f47eb777870)
:   pool: Fix regression causing FTP movers to default to proxy mode

[ad66c99](https://github.com/dcache/dcache/commit/ad66c995a1d58ac3529200e7f4d2e9b489e52476)
:   nfs: Allow not to publish to loginbroker

[be0d7cc](https://github.com/dcache/dcache/commit/be0d7cc28a8bcbb91bcb24a1e97ffbf98e4b17cd)
:   pool: Preserve HSM option ordering

[8187d37](https://github.com/dcache/dcache/commit/8187d3730de15a14d61dfb669b6405138122ad80)
:   [maven-release-plugin] prepare for next development iteration

[3210727](https://github.com/dcache/dcache/commit/3210727918e0e41fd337b1ff92718644d7dfc189)
:   cells: Delete pcells related classes

## Release 2.11.5

### Changes affecting multiple services

Although dCache system configuration property names do not contain
spaces, it is possible to define such properties.  Previously, doing
so breaks the `dcache` command.  This is now fixed.

Update for the nfs door and the pools that allows faster restart.  The
door is also updated to be more responsive to namespace operations
when suffering large number of proxy reads.

If the number of concurrent connections is set to `-1` then the ftp
and dcap doors will leak memory, eventually triggering an
out-of-memory error that will restart the domain.  This is now fixed.

### admin

Fix erronous reporting of bugs when the user supplies incorrect
arguments to an admin command.

### alarms

Fix issues from the alarms service when it shares a domain with other
dCache services.  This could lead to errors when shutting down dCache.

Fix resource leaks and shutdown problems with the alarm service.

### dcap

Fix the permissions check for bring-online with plain dcap and a NFSv3
mounted dCache.

Fix regression against v2.6 and earlier dCache in how gsidcap doors
are known to SRM and how they are published in BDII/GLUE.

### ftp

The ftp door supports the `HELP` command as some clients use this
commands output to discover if certain optional functionality is
available.  This release fixes the output from this command.

The ftp door's access log records some responses without the
corresponding command-line from the client; subsequent responses (if
the response is multiple-lined) and all responses due to `STOR` and
`RETR` commands were affected.  This is now fixed.

### nfs

The `info` command now lists the proxy adaptors.  A proxy adaptor is
created when the client rejects the pool and falls back to reading
data from the door.

Improve shutdown of nfs door when the embedded portmapper is used.

### pool

Improve which interface the ftp mover selects when the client is
redirected to the pool.  In particular, the door will only redirect
the client if the IP protocol matches (IPv4 vs IPv6); for example, if
a client connects with IPv6 and the pool has no IPv6 address then the
door will now proxy the data connection.

The `pool.mover.ftp.allow-incoming-connections` property had no
effect.  This is now fixed.

Add the `IoMode` (whether the mover is accepting new data, or
supplying existing data) to the status line describing the mover.

Improve shutdown of nearline storage subsystem; now dCache will
attempt to cancel all ongoing activity before shutting down the pool.
The previous asynchronous approach could lead to
`IllegalStateException` being logged if the pool was busy at that
time.

### spacemanager

Adjust spacemanager schema migration to be aware of earlier dCache
bugs and to work-around site-local indexes that clash with new indexes
that dCache needs.

In previous versions of dCache, both spacemanager and pnfsmanager had
default access-latency and retention-policy settings.  The
spacemanager default retention-policy is only used if the admin
doesn't specify a value when creating a reservation through the admin
interface.  The spacemanager default access-latency is also used as a
default for the admin command; additionally, it is used when
processing an SRM reserveSpace request that omits the (optional)
access-latency information --- the retention-policy is mandatory in
such SRM requests.

With this release, the spacemanager no longer has default
access-latency or retention-policy properties.  Creating a
space-reservation in the admin interface now requires specifying both
the access-latency and retention-policy.  When processing an SRM
reserve space request without an access-latency, the spacemanager will
check from which linkgroups the user is authorised to reserve space.
It will choose an access-latency based on the request's
retention-policy.  If the user is authorised to reserve space from
link-groups such that both access-latency options (`ONLINE` and
`NEARLINE`) are possible, space-manager will prefer to reserve
`ONLINE` if the retention-policy is `REPLICA` and `NEARLINE` if the
retention-policy is `CUSTODIAL`.

### srm

Previously, if the SRM client requests listing a directory, specifies
a non-zero offset and does not limit the response size then dCache
would fail this request with an IllegalArgumentException.  This is now
fixed.

### webdav

With the recent upgrade of the Milton library some new behaviour was
introduced.  One example is that, under certain circumstances (and to
support certain clients) the Milton library returns a `401` (not
authorised) when attempting to delete a non-existing file.
Unfortunately, this change then broke ATLAS clients.  This patch
updates dCache so it returns `404` (not found) under these
circumstances.

Fix the response when a client requests a byte-range beyond the end of
a file.  This is necessary for compatibly with ARC clients.


### Changelog 2.11.4 to 2.11.5

<!-- git log 2.11.4..2.11.5 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[78f8332](https://github.com/dcache/dcache/commit/78f8332c1cf133fefa3095f2eaa3073bce79e9bd)
:   [maven-release-plugin] prepare release 2.11.5

[fd0d631](https://github.com/dcache/dcache/commit/fd0d6313302308f9e927e8f2f3904a0db4cdb7b0)
:   webdav: Fix reported content length for partial GETs

[5f077e8](https://github.com/dcache/dcache/commit/5f077e8013b490af801ab1cb56632a8cc5c6f53f)
:   ftp: ensure client command line is available in access log

[7d5f276](https://github.com/dcache/dcache/commit/7d5f2763202fa2c8fc6e7083e2c0d52391431cc5)
:   webdav: Fix return code on DELETE of absent file

[7e25854](https://github.com/dcache/dcache/commit/7e2585450c7da812ae4c91ac19100c0eaf8abeea)
:   srm: fix semi-infinite ls range with non-zero offset

[c2df681](https://github.com/dcache/dcache/commit/c2df681313c3bb7374c9d54671aa36b0e9a351f6)
:   pool: Partially fix interface selection for FTP mover

[aac1473](https://github.com/dcache/dcache/commit/aac1473a752e8c0da745d666425a8d374ec8b188)
:   pool: Fix typo that breaks pool.mover.ftp.allow-incoming-connections

[97fbb48](https://github.com/dcache/dcache/commit/97fbb4845019c892b9fc7bdac4cfe27fea0dfeba)
:   shell: fix shell oracle for configuration keys with a space

[12f2cfe](https://github.com/dcache/dcache/commit/12f2cfe5f2760c8c6ee0423237baa683afacedb8)
:   nfs: show current proxy-io transfers in the door

[7bc26c6](https://github.com/dcache/dcache/commit/7bc26c6ed4c204adc7d11fc322bc47c947cb521e)
:   chimera-cli: fix chown

[ecbaf18](https://github.com/dcache/dcache/commit/ecbaf18da62ad1e70aa41b846de581b53679423f)
:   dcap: Fix regression in published protocol family

[7990ab6](https://github.com/dcache/dcache/commit/7990ab6cbec37b6bc12059b7addd19ba5cb1b3c7)
:   ftp: fix help output

[efe526e](https://github.com/dcache/dcache/commit/efe526e3548076375ffe2e3b1e4ce3cb904b39d4)
:   loginmanager: Fix leak caused by absent child limit

[3fa5684](https://github.com/dcache/dcache/commit/3fa568444f4ac3a99110021c34d7796c1700ad12)
:   spacemanager: Fix null constraints and other schema migration issues

[1e00567](https://github.com/dcache/dcache/commit/1e00567f74f35e9e55f010813871a7c9d6f94a86)
:   alarms: Fix several resource leak and shutdown problems

[41a525c](https://github.com/dcache/dcache/commit/41a525c0013c4806570d94ed2732a5f4cb4dc5c7)
:   alarms: Detach alarms appender on shutdown

[abcc92e](https://github.com/dcache/dcache/commit/abcc92e919a0cc0392adeaf1e34b91bcf8acaaf5)
:   dcap: check for url in some commands

[9fc7213](https://github.com/dcache/dcache/commit/9fc72136232789bfd471002509673c29d80eed5c)
:   pool: Fix shutdown of nearline storage subsystem

[5d33937](https://github.com/dcache/dcache/commit/5d33937245841b77182835c8e644a5489b9e5e66)
:   admin: Fix error reporting

[ecbc33a](https://github.com/dcache/dcache/commit/ecbc33a63ceee5bf0e09a7c88a6734140fe771d9)
:   pool: add Io mode into mover's status line

[7062f68](https://github.com/dcache/dcache/commit/7062f686a5c58ad4854303c0ee9b03dae89b7381)
:   spacemanager: Get rid of access latency and retention policy defaults

[49ecc70](https://github.com/dcache/dcache/commit/49ecc7074ad16b9cff6a04305c699678895ae507)
:   nfs: stop embedded portmap on shutdown

[88daa03](https://github.com/dcache/dcache/commit/88daa03b2a145cc57f1bdd3e9cd9e34838d70e22)
:   libs: update to nfs4j-0.9.3

[ae567ab](https://github.com/dcache/dcache/commit/ae567abddfdb14c03db38d4201b6336a679513c2)
:   [maven-release-plugin] prepare for next development iteration

[70349c7](https://github.com/dcache/dcache/commit/70349c771e3b6d34cb1b90e4bb481d81cadc8a40)
:   dcap: refactor PnfsSessionHandler to unify permission check and url handling

## Release 2.11.4

### Changes affecting multiple services

With this release, the srm, webdav and httpd doors will log SSL
handshake failures.

### ftp

Relax requirements for the EPSV and EPRT commands.  Previous versions
of dCache would reject all RFC 2428 commands from an IPv4 client.
This has been relaxed with this release.  Now, IPv4 clients can use
EPRT.  IPv4 clients can also use EPSV if delayed passive is enabled.

### info

Info service includes a safety feature that prevents it from
bombarding the rest of dCache with too many messages.  With this
release, the safety limit is reduced allowing info to send messages
more often.

Reduce the delay between subsequent messages of the same type.  This
allows the info service to recover information more quickly after
being restarted.

### pool

The NFS specification allows the server to specify multiple addresses
when telling the client where to connect; for example, specifying both
an IPv4 and an IPv6 address, or both addresses for multi-homed
machines.  This requires the client to choose the appropriate
interface.  For Scientific Linux 6, the kernel client will always use
the first supplied address in the list and fail if it cannot access
the pool with that address.  With this release, pools will order the
list, using heuristics to select which IPv4 address is "correct" and
list it first.

Prior to flushing a file to tape, the pool checks if the name-space
entry still exists and deletes the replica (rather than flushing) if
not.  Version 2.10.7 introduced a regression where, if this happens,
there is a IllegalStateException stack-trace.  This is fixed with this
release.

The NFS protocol includes support for syncing when writing data,
either as an explicit command or as a flag within a write request.
After sync-ing, queries against the namespace (e.g., the file's size)
are expected to reflect the file's state when sync-ed.  This release
introduces support in dCache for this feature.

Allow NFS client to detect when the pool is restarted, so has lost any
pending (i.e., not committed) writes.  NFS-compliant clients will
handle this situation without data loss.

### poolmanager

With previous dCache versions, the WAAS selection algorithm had a bug
where it could (mistakenly) consider pools full if all pools had very
fresh files.  This is fixed with this release.

### spacemanager

Fix various issues to improve the robustness of spacemanager: handle
failed uploads correctly, handle files deleted during upload
correctly, increase robustness against dCache loosing (internal)
messages.

### webdav

Upgrade to Milton v2.6.  This fixes the buffering problem where a
proxied vector read request results in the entire file being written
to a `tmp` directory and not deleted.  With this release, requests for
100 kiB or less data result in no data being written to disk; requests
for more than 100 kiB are still written to disk, but only the data
needed to satisfy the request is stored and the file is deleted once
the response has been sent.  Some issues persist: data isn't deleted
if there is a failure sending it to the client and the whole file is
requested from the pool.


### Changelog 2.11.3 to 2.11.4

<!-- git log 2.11.3..2.11.4 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[1256cc0](https://github.com/dcache/dcache/commit/1256cc0fbbeb4a0b45afa4a77c2a0a8b3df899ad)
:   [maven-release-plugin] prepare release 2.11.4

[f703858](https://github.com/dcache/dcache/commit/f703858617e6a5c240dfb3d821bd5deef181572c)
:   ftp: Relax requirements for EPSV and EPRT

[ccbf4ad](https://github.com/dcache/dcache/commit/ccbf4adba9ccd64b81030294cb15e26455318997)
:   nfs: return correct verifier on WRITE and COMMIT

[8682625](https://github.com/dcache/dcache/commit/868262522ba78f4077fba53cb5750e56affc3141)
:   nfs: set file size in namespace on stable_how is FILE_SYNC4

[fe8e4b8](https://github.com/dcache/dcache/commit/fe8e4b89b003371e16bb316fcb6b49e937637018)
:   poolmanager: Fix full pool detection for WASS

[4411aaa](https://github.com/dcache/dcache/commit/4411aaa1808c2ade9786dc8fc3e000e7a3d2b966)
:   srm,webdav,httpd: Log SSL handshake failures

[ee165e7](https://github.com/dcache/dcache/commit/ee165e7c683226475dfce718f5d3aa3b47a86732)
:   ftp: Relax requirements for EPSV and EPRT

[a510d81](https://github.com/dcache/dcache/commit/a510d8109287fce0b825db266225e935ac2e3919)
:   Upgrade to Milton 2.6

[7b58ae1](https://github.com/dcache/dcache/commit/7b58ae14b20a9f8d2af3b650f2ce92f3e78b5001)
:   info: Reduce safety limit to 50 ms

[b779e2f](https://github.com/dcache/dcache/commit/b779e2f1d72b800f7a81892b195c3f075446f102)
:   pool: reorder ip addresses returned to NFS client

[6ec9e9f](https://github.com/dcache/dcache/commit/6ec9e9fcf480ac721e6d230d92087ec44208073c)
:   pool: Fix ISE when flushing deleted file

[0254527](https://github.com/dcache/dcache/commit/02545274ca2f3a302ba1660f4b3127d580510ead)
:   info: Reduce delay between messages

[fa57fa3](https://github.com/dcache/dcache/commit/fa57fa38834d6bc7b7872d42432b785551e53807)
:   spacemanager: Fix various error recovery scenarios

[bacdb02](https://github.com/dcache/dcache/commit/bacdb02322aef900b29f8ff3a4e1923c82704b82)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.3

### Changes affecting multiple services

Restarting a domain within an active dCache instance can lead to a
domain receiving messages for a cell as it is starting.  Strict
control is require to avoid the cell attempting to process messages
before it is ready.  This release fixes one place where this control
was missed, which could lead to a `NullPointerException`.  While this
problem can affect any core dCache service, it was noticed with the
spacemanager service.

### httpd

dCache versions including and after 2.11.0, 2.10.9, 2.9.12, 2.8.16,
2.7.21 and 2.6.36 required sites to delete existing RRD files when
upgrading; i.e., run the command `rm -f /var/lib/dcache/plots/*.rrd`
when the domain hosting the `httpd` service is stopped.  This release
reverts that change, but requires sites that have already upgraded to
repeat the `rm` command.  Sites upgrading from an earlier dCache
version do not need to delete anything.

Fix a potential `NullPointerException` in `poolCollector`.

### nfs

Protect against a `NullPointerException` if the client attempts to
read the contents of a file's level where that level exists in the
database but contains a Nil value.  This does not happen under normal
circumstances.

### pool

Previously, any problems found when the xrootd client is writing to a
pool were silently ignored: neither the pool, the client, or billing
appreciated there was a problem.  With this release, problems are
logged in billing, reported back to the client.  The client is also
disconnected.

The Berkeley DB, which may be used to store file metadata on the pool,
does not like being interrupted.  The pool tries hard to avoid
interrupting reading or writing; this release fixes one place that
slipped through.

Fix regression in the output from the info command: it did not include
statistics about the number of HSM requests and HSM timeouts.  Also
fixes how active HSM jobs are counted: cancelled jobs are still active
until the underlying job as ended.

Improve the error message reported back to the xrootd client should
its request have an invalid or missing UUID.


### Changelog 2.11.2 to 2.11.3

<!-- git log 2.11.2..2.11.3 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[74ce914](https://github.com/dcache/dcache/commit/74ce9140c8c5e90ab7f2159429cae392a66f002f)
:   [maven-release-plugin] prepare release 2.11.3

[0d23d50](https://github.com/dcache/dcache/commit/0d23d50ccc0420f4ff5784c0a373c67686bb1ea0)
:      imera: protect against NPE in FsSqlDriver#read

[46816f0](https://github.com/dcache/dcache/commit/46816f0d747f048fdc83a82ca45b7b71c5641b15)
:   xrootd: Propagate mover errors to dCache

[5372282](https://github.com/dcache/dcache/commit/53722824c505a5e5d97e3a1d6bd7413c0637770a)
:   pool: Restore flush and stage stats in info

[2c87025](https://github.com/dcache/dcache/commit/2c8702587949f78e4554ccfdd380ba3eac1b7191)
:   pool: Improve xrootd error message on missing UUID

[a22ecc5](https://github.com/dcache/dcache/commit/a22ecc5972a7bb5db20dfec129c566b7b2babb07)
:   Fix NPE in cell initialization

[393cf34](https://github.com/dcache/dcache/commit/393cf340985b2593ade3962a969fd7431b16bc4e)
:   Fix NPE in httpd service

[1768254](https://github.com/dcache/dcache/commit/1768254a522136032370f1e3ec8c444509a4474d)
:   pool: Avoid interrupting Berkeley DB in migration module server

[d1cfc7b](https://github.com/dcache/dcache/commit/d1cfc7b01e949b3a56875f96fea7fd2fd6efb68b)
:   dcache-webadmin: revert rrd data source names

[2342757](https://github.com/dcache/dcache/commit/234275796912ed48d4bc9698326076d5a12be432)
:   [maven-release-plugin] prepare for next development iteration

## Release 2.11.2

### Changes affecting multiple services

dCache will discard queued internal messages where the sender is no
longer expecting a reply (due to internal time out); this helps an
overloaded system recover quickly.  Such discarded messages are
logged.  This release provides better logging when this happens:
string commands are logged correctly and both the time-to-live and the
age have been added.

The xrootd door and, on the pool, the HTTP and xrootd movers logging
included incorrect context information, always showing the first
connection.  This has been fixed.

### httpd

On startup, httpd logs a warning `has uncovered http methods for path:
/`.  This has been fixed.

### Changelog from 2.11.1 to 2.11.2

<!-- git log 2.11.1..2.11.2 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[4334f9a](https://github.com/dcache/dcache/commit/4334f9a528559eae659a1931170e76ba7c70bd7c)
:   [maven-release-plugin] prepare release 2.11.2

[edde62f](https://github.com/dcache/dcache/commit/edde62fb4e9cc37782d4dffb98c2afbe25ce0d42)
:   cells: Refine TTL discard message

[12f082e](https://github.com/dcache/dcache/commit/12f082eb3459e625073579ab5dd8c1de1a219a27)
:   xrootd,pool: Fix xrootd and http logging context

[a1fde31](https://github.com/dcache/dcache/commit/a1fde31cae5c460df822ee23380e95824ea4cf81)
:   jetty: update webdefault.xml to adhere to new specification

[8862efd](https://github.com/dcache/dcache/commit/8862efdf58db3aa8658e5917e5e0bd767384cedd)
:   [maven-release-plugin] prepare for next development iteration

[c8ff984](https://github.com/dcache/dcache/commit/c8ff98421d330e27f4bb5c3ffa0723c60199cd61)
:   (2.11) dcache-webadmin: change Jetty setting so .war is not unpacked



## Release 2.11.1

### Changes affecting multiple services

Doors report to billing when a file is deleted.  Previously, many
doors neglect to include the PNFS-ID and sent only the path.  This can
be ambiguous so, with this release, all doors send the PNFS-ID in
addition to the path.  Some doors also failed to send the file size
(if known) and client IP address.  These, too, have been fixed. In
summary:
 *  dcap additionally sends: PNFS-ID, file-size and client
    address.
 *  ftp additionally sends: PNFS-ID
 *  srm additionally sends: client address.
 *  webdav additionally sends: PNFS-ID and file size
 *  xrootd additionally sends: PNFS-ID.

### gplazma

Update ldap plugin to support both RFC 2307 and RFC 2307bis LDAP
schema types.  Additionally, the memory footprint of this plugin has
been reduced and its performance improved.

### nfs

Update nfs4j to v0.9.2.  This brings some small performance benefits
when listing a directory and for reading data through NFS v3.

Fix bug where, when a client read or write activity is proxied, the
corresponding dcap mover wasn't removed if client didn't wait for the
queued mover to start.  Previously, such movers would accumulate on
the pool.

### srm

Do not download a DTD file from java.sun.com when starting up.

### webadmin

Display the command's output in the cell admin page to use a monospace
font.

Remove a javascript error due to missing clojure dependency.

Sending commands in cell admin page is fixed.

### xrootd

Improve the xrootd logging plugin to provide additional information.

### Changelog from 2.11.0 to 2.11.1

<!-- git log 2.11.0..2.11.1 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[7a3f37a](https://github.com/dcache/dcache/commit/7a3f37a89692c1b527bc902136c5c5a3182ae3e8)
:   [maven-release-plugin] prepare release 2.11.1

[f744732](https://github.com/dcache/dcache/commit/f744732ac56bf267b891b9cb282567436e84745d)
:   doors: Add pnfs ID to billing remove entries

[19faee9](https://github.com/dcache/dcache/commit/19faee9c3839200a85b6aca24d5e28e5246ecebe)
:   webadmin: Fix ClassCastException in cell admin

[6d40f30](https://github.com/dcache/dcache/commit/6d40f30d745078adda172fe8813aa0774111673f)
:   Fix compilation for Java 7

[362801a](https://github.com/dcache/dcache/commit/362801ab171791dc0057b32d025dd1349e313d98)
:   webadmin: remove redundant head element in alarms panel html

[5173d34](https://github.com/dcache/dcache/commit/5173d344bfdd4684e2eef31adabdacbe7c2571ad)
:   dcache-webadmin: change output field of cell admin page to monospace font

[302f675](https://github.com/dcache/dcache/commit/302f67504fa50126fdf91c5b84c9d78045896b60)
:   srm-server: add servlet webapp-2.3.dtd file

[f44f137](https://github.com/dcache/dcache/commit/f44f137f8c0c95803cf3e2b0403f052eed3dd3df)
:   (2.11) dcache-webadmin: eliminate clojure dependency

[5f3fc62](https://github.com/dcache/dcache/commit/5f3fc62be251c724d746ebaf3272895cc9f7052f)
:   libs: update to nfs4j-0.9.2

[68b551b](https://github.com/dcache/dcache/commit/68b551bf0aab3fdb2fbe3de8ea920cc70daeedfd)
:   dcache-xrootd: Extend and improve xrootd access log plugin

[d18b88c](https://github.com/dcache/dcache/commit/d18b88cc5842bc459ec35ebbc0eb043cbc76a31e)
:   gplazma-ldap: pull only required attribute

[d581502](https://github.com/dcache/dcache/commit/d58150212b38f5388f5e1d8f64e9ff4d648a2144)
:   Revert "(2.11) dcache-webadmin: change Jetty setting so .war is not unpacked"

[a589e13](https://github.com/dcache/dcache/commit/a589e13fa968e14c944531c6aacf423df68f15d8)
:   gplazma-ldap: support uniqueMember based group membership query

[07935f7](https://github.com/dcache/dcache/commit/07935f7b6897a13d32a8c6cb862ec4b383601f9f)
:   (2.11) dcache-webadmin: change Jetty setting so .war is not unpacked

[a11f5a9](https://github.com/dcache/dcache/commit/a11f5a932c1ba8491bb5826f6d880f3298b8193e)
:   nfs-proxy: kill mover on close

[0f5ec5a](https://github.com/dcache/dcache/commit/0f5ec5a21538a89b9c2725c84a749bc0699632aa)
:   [maven-release-plugin] prepare for next development iteration



## Release 2.11.0

### Changes affecting several services

#### Short session strings

FTP, WebDAV and NFS doors now use BASE-64 encoding for the session
counter.  For such doors, sessions have the form
`door:<cell>@<domain>:<counter>`.  The `<counter>` part used to be
base-10 encoded (i.e., a normal integer number).  With dCache v2.11,
this part is now a base-64 number.  The result is shorter log lines
and billing entries.

#### Improved shutdown

When a dCache domain shuts down, it asks each cell in turn to stop.
As a backup procedure, dCache will wait up to one second for all
threads associated with that cell to terminate before explicitly
interrupting any of that cell's remaining threads.  The `dcache stop`
command, which triggers the domain shutdown, will wait up to ten
seconds for the domain to finish shutting down.  After this, it kills
the java process outright.  Therefore domain shutdown must finish
before this deadline to achieve a clean shutdown.

With dCache v2.11, the shutdown procedure of several services
(billing, httpd, loginbroker, pool, poolmanager, replica) have been
improved by explicitly stopping background activity.  Previous
versions of dCache relied on dCache's backup procedure for terminating
left-over activity.  By explicity stopping background activity,
shutting down each of these services can now take less than one
second.

Shutting down the pnfsmanager service has also improved.  It is now
faster, cleaner and safer.  Previously, pnfsmanager also relied on the
backup procedure to terminate on-going activity; this was unfortunate
not only because it slowed down the shutdown but also that such
activity could attempt to use the database after the database
connection pool was stopped.  This could result in errors being logged
and risked partial processing of requests.  With dCache v2.11, this
has been fixed.

When shutting down services that use a thread-pool for processing
messages (gplazma, pinmanager, pool, srm), the shutdown sequence now
ensures all threads have stopped before closing resources.  As with
pnfsmanager, previous versions of dCache risked concurrent activity
continuing after database connections have been stopped.  This is now
fixed.


#### Improved HTTP services

Jetty is the web-server framework used by the webdav, httpd and srm
services.  In HTTP 1.1, a network connection is kept open unless the
client explicitly requests it be closed.  To the user, subsequent
requests appear to be processed faster as there is no overhead from
establishing a new TCP connection and SSL/TLS/GSI context.

In previous versions of dCache, each HTTP connection occupies a
thread, even when waiting for the client to send the next request.
Such occupied threads, cannot process requests from other clients.
This made tuning dCache for optimum performance difficult: many
clients connected but not issuing requests will result in high memory
usage, but reducing this number can impact on the server's ability to
handle concurrent requests.  Safe configurations will likely lead to
dCache under performing under high load.  With v2.11, dCache will free
up the thread while waiting for the client's next request, making it
easier to obtain optimum performance.

A separate improvement is that dCache reacts better when faced with
many clients attempting to connect at (nearly) the same time.

In HTTP 1.1, if the client decides to keep the connection open, the
server may still close it later on.  In dCache, the policy is to close
any connection that remains idle for too long.  Idle means no traffic
flowing in either direction; either dCache is waiting for the next
client request or the client is waiting for dCache's response.

By default, srm service will close connections after one minute of
inactivity; the webdav service will close idle connections after five
minutes of inactivity; and, for httpd service, connections are closed
after 30 seconds of inactivity.  These idle timeouts may be adjusted
through dCache configuration properties.

Jetty also has the concept of being low on resources.  This is
triggered when all request processing threads are active and there are
more clients waiting to connect; for example, when many clients
attempting to connect at (more or less) the same time.

When Jetty detects it is low on resources, it can react by reducing
the timeout for idle connections.  By more aggressively closing idle
connections, the service can "degrade gracefully" when faced with a
sudden inrush of client connections; the users experience only a
slight delay in receiving replies as the necessary resources are
quickly freed.  The srm and webdav services reduce idle connection to
20 seconds and 30 seconds respectively, whereas httpd does not react.

In previous versions of dCache, when low on resources, the more
aggressive idle-disconnection policy would affect only new
connections; the existing idle connections would enjoy longer
timeouts.  With dCache v2.11, all SRM or WebDAV connections experience
the reduced idle-connection threshold.


#### Improved deletion speed

The database updates needed to delete a file has been reduced, making
deletions faster.  The effect is most pronounced if the file contained
many non-empty levels.  This affects the pnfsmanager and nfs services.



#### Libraries

Many of dCache third-party library dependencies have been upgraded
with this release.  Please refer to the library project's
documentation for full details on the resulting improvements:

 *  AspectJ: 1.8.2
 *  BerkeleyDB: 6.1.5
 *  DataNucleus: core 4.0.1, plugin 4.0.0-release
 *  GSON: 2.3
 *  HikariCP: 2.0.1
 *  Jetty: 9.2.2.v20140723
 *  netty: 3.9.4.Final
 *  PostgreSQL: 9.3-1102-jdbc41
 *  Scala: 2.11.2
 *  SLF4j: 1.7.7
 *  Spring: 4.0.6
 *  Xerces: 2.11.0


### Changes to services

The following section describes changes that affect a specific
service.

#### alarms

With this release, the alarms service has received substantial
improvements.  These are described below.

A domain may now host both the alarm service and other services.  As a
consequence, the alarm-specific `logback-server.xml` file (located in
the `/var/lib/dcache/alarms/` directory for RPM packages) has been
removed.  As log messages generated by the alarm service are handled
in the same fashion as other services, the `service.log` file has also
been removed.

With dCache v2.11, alarm definitions are now either predefined or
custom.  Predefined alarms are automatically generated within dCache
without requiring a match against some regular expression; these are
the alerts defined by the dCache developers.  Custom alarms are those
that are must match some regular expressions; these are defined by the
admin and are comparable to the alarms defined in earlier dCache
releases.

All predefined alarms are sent at the ERROR level, so it is not
necessary to set `dcache.log.level.remote` to below this level for the
alarm service to receive all predefined alarms.  It may still be
necessary to adjust this property if custom alarms match against
messages logged at a lower threshold.  While this is supported, the
same performance caveats exist as with earlier releases.

It is no longer necessary to mirror the
`alarms-custom-definitions.xml` file between the alarms and httpd
services.  However, when using XML storage, the requirement to provide
some shared storage between the nodes hosting alarm and httpd services
continues.

The structure of the custom alarm definition or filter has been
simplified.  It now consists only of the following elements:

1. type name
1. keyWords
1. regex
1. regexFlags
1. matchException
1. depth

Note that the predefined Severity level, along with logger and thread
ids, have been removed as filter attributes.

When an alarm fires, it is assigned one of four priorities (these
replace the severity concept in earlier versions).  In decending
order, these are `critical`, `high`, `moderate` and `low`.  By
default, all alarms have `critical` priority.  This default priority
may be altered in the admin interface and individual alarms may be
assigned a lower priority through the priority map.

The priority map is stored in the `alarms-priority.properties` file,
which is located in the `/var/lib/dcache/alarms` directory in RPM
packages.  The priority map may be adjusted either by editing this
file directly (and requesting dCache reloading it) or via the admin
interface.

Note that, while there is still a Severity column in the database, it
is no longer used.

The previous dCache shell commands to add, modify, remove and send
alerts are still present.  Their options have been modified slightly
to reflect changes in this release.  There is a new `dcache alarm
list` command.  This lists all predefined alarms.

The alarm service is now a well-known cell by default.

The alerts admin commands have been extended to allow creating custom
alerts and assigning priority to alerts.  The commands `predefined ls`
and `send` have also been added to the admin interface; these behave
as the similarly named `dcache` shell commands.

The optional alarm cleaner daemon now runs as part of the alarms
service, not in the httpd service.  The default values for its
properties have been moved from `httpd.properties` to
`alarms.properties` and renamed accordingly.

There are a number of new and modified alarms properties which are
documented in the `alarms.properties` defaults file.  Most significant
of these are those for enabling email notification, which no longer
requires direct editing of logback configuration files.

The alarms web page is basically the same, except that the "Severity"
label has been replaced by "Priority".  That filter choice affects
only alarms and not unmarked logging events.  Since this is not a
schema attribute, it is not reflected in the actual table, but alarms
will be sorted there by priority first.


#### billing

The billing service no longer logs a warning on shutdown.

The billing log format has been extended to allow InfoMessage log
entries to include the session identifier.  This is particularly
useful when understanding which SRM session is responsible for billing
entries.  The default format is not altered, so sites must adjust
their configuration to include session information.


#### gplazma

Update gPlazma Login result printer to use a human-friendly label
rather than a dot-separated-number for the SHA-512-with-RSA algorithm.

The kpwd plugin, which supports the proprietary kpwd-format files, has
been updated to support multiple gids.  Users with multiple gids have
a comma-separated list of gids instead of the single gid value, with
the primary gid the first gid in the list.  A comma-separated list of
gids is valid for both `login` and `password` lines.


#### info

The info-provider groups together pools that GLUE can report together
for storage accounting.  Such groups are called Normalized Access
Storages (NASes).  Previously, info tried to group pools as much as
possible, which leads to confusion over the names.  Now, a NAS
represents all the pools accessible by the same set of links.

#### nfs

The NFS door and mover now shows correct units, nanoseconds (ns), when
showing performance statistics for the different NFS operations.

The database query used to gather information for `df` command on an
NFS mount has been improved.  However, this remains an expensive
operation.

The NFS door and mover are updated to nfs4j v0.9.1.  This brings the
following improvements:

 *  Support for the `all_root` export option.  This treats all requests
    from the specified client machines as having come from the root
    user.  Created files and directories have the same ownership as
    the parent directory.

 *  We ensure that file attributes (e.g., file size) are always
    up-to-date.  Previously, zero file size was reported for a short
    period after closing a file written through NFS.

 *  Some performance boosts when checking filenames.

 *  Make deletes through NFS v3 faster.



#### pool

Some pool error messages have been expanded slightly to give some
contextual information and to distinguish between otherwise identical
errors.

The migration module is idempotent, which means running the same
command twice has the same affect as running it once, assuming no pool
has gone offline between running the command.  While being idempotent
is a useful feature, sometimes one might want multiple copies of a
file, which simply running the migration module command multiple times
does not achieve.

With dCache v2.11, the migration module commands now support the
`-replicas` option.  This allows the admin to specify the desired
number of replicas.  The pool will then create that number of replicas
sequentially.

Previously, the HSM interface processed all HSM requests sequentially:
one at a time, using a single core.  This is particularly bad for
staging requests as preparing the pool for the staged file may require
IO.  With 2.11, the HSM now processes requests concurrently, which
allows CPU and IO activity to overlap and spreads this load over
multiple cores.

The output from admin commands `rh ls`, `st ls` and `rm ls` are now
sorted by creation time.

Previously, just before a pool starts accepting a new file, it will
request the expected checksum from pnfsmanager.  In the majority of
cases there is no checksum, so this slows down dCache.  In 2.11, this
step is skipped; uploads are now (slightly) faster.  A client may
still supply the file's checksum prior to upload (using FTP) and
dCache will verify the checksum once the upload has completed.


#### pnfsmanager

As part of the general shutdown improvements, during shutdown the
pnfsmanager service will reject all queued requests and return a "No
Route To Cell" error.  Requests that pnfsmanager has started
processing are given 500 ms to complete before being forcefully
terminated.


#### replica

Replica manager now correctly shuts down the database connection pool
when dCache is shutting down the domain.


#### srm

With dCache v2.11, the srm service now includes a self-throttling
behaviour when clients make more requests that the database can cope
with.  Previously, when overloaded, all database updates were dropped
and a message like `Persistence of request <request> skipped, queue is
too long` is logged.  The result is that the database could hold
incomplete or inaccurate information about SRM activity.

Such inaccuracy was acceptable as the database was used for debugging
information.  However, with the adoption of a separate upload
directory and some support for recovering user activity after a
restart, this is no longer true.  Moreover, such debugging information
is likely very useful when understanding any unexpected behaviour
during an overload situation, so needs to have some accuracy in
particular under such conditions.

SRM database updates naturally fall into two types: major and minor.
Major updates record new requests and transitions to a final state
(SUCCESS, FAILURE, CANCELLED); minor updates record changes to some
non-final state.  In an overload situation, minor updates may be
dropped but major updates will always be processed.  If necessary,
processing the SRM request will be delayed so that major updates are
stored.  This has a secondary effect of creating a back-pressure on
clients, slowing them down and allowing the srm service to recover.

The admin command `ls` and `ls completed` have been refactored.  There
is now a single command `ls` that accepts the option `-completed=<n>`
to limit the number of completed operations.

##### Closing SRM connections

With the adoption of Jetty v9, the GSI implementation has been
rewritten to use Java's built-in SSL support in a more direct fashion.
The most immediate effect of this is that, by default, the shutdown
sequence of SSL and GSI connections has changed.  Before, the server
would simply close its end of the network connection; now, the server
issues a CLOSE alert that notifies the client of the impending close
before closing its end of the connection.

Sending a CLOSE alert is part of the SSL v3 and subsequent TLS
protocol specifications.  Previous versions of dCache were in error by
not sending such alerts.

Although most SSL/TLS clients expect the CLOSE alert, the dCache SRM
clients (prior to v2.10.7) considers any alert as an indicator that
the operation has failed.  Depending on the client configuration, it
might or might not retry the operation several times if this happens.
In either case, the return code and output will reflect a failed
operation, whereas the operation may have succeeded.

This has been fixed with SRM-client release v2.10.7: this version
accepts the CLOSE alert but does not require it.  It is compatible
with dCache v2.11 and earlier versions.

To allow a smooth transition, dCache includes the
`srm.enable.legacy-close` configuration property.  When set to `true`
(the default) the srm service will close connections without first
issuing the CLOSE alert, in keeping with previous dCache behaviour.

Future versions of dCache will change the default and eventually
remove this option.  Therefore sites are invited to upgrade their
clients.


#### transfermanagers

TransferManager now generates IDs based on the current time rather
than by taking the next SRM request ID.  This means the
transfermanagers service no longer needs access to the SRM database.


#### Scripts

The startup time for the different `dcache billing` commands has been
reduced.


### Changelog from 2.10 to 2.11.0

<!-- git log 2.10..2.11.0 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->

[15d83f6](https://github.com/dcache/dcache/commit/15d83f6240997e8e23f8e9307a5311c91cce7845)
:   webdav: correct error message for incorrect Credential header value

[e414a4c](https://github.com/dcache/dcache/commit/e414a4cdee5a31642cdebac0cbbf6a7ca52a2d32)
:   srm-client: delegate by default for https 3rd-party transfers

[65d7504](https://github.com/dcache/dcache/commit/65d750447f276b0a45c163edd406e244c41fd49c)
:   chimera: Add messages to JdbcFs#move exceptions

[111e553](https://github.com/dcache/dcache/commit/111e55372cd3c3f208c3f84f62d43a20737b1852)
:   poolmanager: Warn when spacecostfactor is too big

[bb8c9f5](https://github.com/dcache/dcache/commit/bb8c9f5a8369af10e41816946eab5d7653224f02)
:   srm-client: add srmfs to RPM manifest

[b9b1ecd](https://github.com/dcache/dcache/commit/b9b1ecd8ad31662da627d48aaafca367af164032)
:   poolmanager: Warn when spacecostfactor is too big

[11e88a6](https://github.com/dcache/dcache/commit/11e88a61497a4e620329be2ce6c5b0c5af403b8b)
:   doors: Base64 session counter

[84c8587](https://github.com/dcache/dcache/commit/84c8587315c1f80012e422955403bfd9374c1b7f)
:   pnfsmanager: Check file type before overwrite

[b459316](https://github.com/dcache/dcache/commit/b45931697a0c83cff709e0071d736fe624c2d232)
:   srm-client: Report srmPutDone failure

[6885adc](https://github.com/dcache/dcache/commit/6885adc8c6c566c83b1611bc7d94585ea5d193f9)
:   chimera: Refine IOException to ChimeraFsException

[f455fdc](https://github.com/dcache/dcache/commit/f455fdc39c32619a996373cad3a00ffe1427e71a)
:   check-config: Produce error when using scoped properties

[d16ccfb](https://github.com/dcache/dcache/commit/d16ccfbfac0d67f02781b7f40404053337d8bb64)
:   srm-client: Add interactive SRM shell

[10d005e](https://github.com/dcache/dcache/commit/10d005e00b5c2150a638feacc0cdddbc53fa5640)
:   poolmanager: Kill watchdog on shutdown

[d934502](https://github.com/dcache/dcache/commit/d93450224ba7684bc10c9765c0fbebd4bb64b11e)
:   pool: Kill sweeper thread on shutdown

[4a0c600](https://github.com/dcache/dcache/commit/4a0c6007671374d3261ad2abf2a004a23cd98c43)
:   httpd: Kill transfer observer threads on shutdown

[7626a41](https://github.com/dcache/dcache/commit/7626a412e9196b22749c14ff638615462dfc696d)
:   loginbroker: Kill worker threads on shutdown

[6919e26](https://github.com/dcache/dcache/commit/6919e2645f844f1681f9181ad0272b34f6ead547)
:   pnfsmanager: Controlled shutdown of processing threads

[d6754d5](https://github.com/dcache/dcache/commit/d6754d5112c1a2324e66c3ee8965466881ced8fe)
:   loginmanager: Associate ScheduledExecutor with the cell's thread group

[423fe0d](https://github.com/dcache/dcache/commit/423fe0d01eaebea1bf4c7dae3d44f09a5be9e63e)
:   cells: Orderly shutdown of multi-threaded cells

[6939d2e](https://github.com/dcache/dcache/commit/6939d2e4b62ec061914dc2cea133109d851705b3)
:   mark internal &lt;service>.db.xyz properties as immutable

[fa10ecd](https://github.com/dcache/dcache/commit/fa10ecda71f65da5efad02e3027fa6a90d4c26c6)
:   nfs: mark unused nfs.db.host property as forbidden

[9fd5d7a](https://github.com/dcache/dcache/commit/9fd5d7ae59e150e7604de6c48a2ed6b92edbbb2f)
:   pom: update to nfs4j-0.9.1

[0990a8d](https://github.com/dcache/dcache/commit/0990a8d79ab67db2b100b9a6a7dfbf33a23f2f53)
:   chimera: Avoid coupling to hikari and alarms in JdbcFs

[fad06a4](https://github.com/dcache/dcache/commit/fad06a4181432f4f22318ce126fdc0d648c05149)
:   replica: Shut down message processing thread on cell shutdown

[219bc9c](https://github.com/dcache/dcache/commit/219bc9cc40699d3e3945d9ab3e6bdfaaa43c83fe)
:   replica: Proper shutdown of database and avoid database singleton

[50421f4](https://github.com/dcache/dcache/commit/50421f49871eb489918f4fe64db3b09de6ec499a)
:   billing: Improve shutdown for db backend

[c6073a5](https://github.com/dcache/dcache/commit/c6073a586d55cd3c7d5620fe74cd48b2532f674f)
:   Minor adjustment to NoRouteToCell error in LoginBrokerHandler

[e9595f5](https://github.com/dcache/dcache/commit/e9595f5da4a0adec702222c5404a5b29a97ac2a0)
:   poolmanager: Shut down request container thread pool during shutdown

[04fcb12](https://github.com/dcache/dcache/commit/04fcb12c2932ef558414f21be7036e1e7d551d47)
:   chimera: fix unit tests

[b721145](https://github.com/dcache/dcache/commit/b7211458b3af38206594a36a72eb87b09ffeeaee)
:   pool: Fix pool size health check in case of asynchronous release of space

[31dfdba](https://github.com/dcache/dcache/commit/31dfdba81ebb393faf884915e3b7437f4fa7771e)
:   spacemanager: Suppress transient deadlock resolution errors

[dbd6b70](https://github.com/dcache/dcache/commit/dbd6b7043bca392f4ef5487b5889dadd828fec31)
:   pool: Fix race leading to false positices in pool size health checks

[c91e195](https://github.com/dcache/dcache/commit/c91e19508b7c32999c8ffc90ada0f1235ccf2dfc)
:   pool: Fix ISE in CacheEntryImpl#toString

[f743599](https://github.com/dcache/dcache/commit/f743599fc7cc72d7a3b88fda030d088df2096bd0)
:   pool: Fix ISE in 'rep ls'

[904336c](https://github.com/dcache/dcache/commit/904336cef6a9ae88e3f04ef3dca966841069e6a9)
:   webadmin: make pool queue data enum Java 8 compatible

[b315fc0](https://github.com/dcache/dcache/commit/b315fc0e4c5fdde59d926dea43706079b4957b8f)
:   webadmin: fix exit login in billing refresh loop

[336ce07](https://github.com/dcache/dcache/commit/336ce076164187b5acc41afa255ba03956f81885)
:   pool: Make migration task cancellation more robust

[272bfe8](https://github.com/dcache/dcache/commit/272bfe8b53d7f01cba0a87278b95235b1ccb6544)
:   cell: Log exceptions within the correct cell context

[55de0de](https://github.com/dcache/dcache/commit/55de0de55cc6940f6204dee68e29ec24a13c75d3)
:   pool: Fix pool selection bugs in migration module

[201685d](https://github.com/dcache/dcache/commit/201685dd5f91ab924a0e632e6ebc8ea77ab200b6)
:   admin: Propopage NPE to user

[86f6f6b](https://github.com/dcache/dcache/commit/86f6f6b8da0e0350408301f32bd8746c8e52656b)
:   chimera: query for inode generation on readdir

[c84b19c](https://github.com/dcache/dcache/commit/c84b19c9f0a706b739d9bdb730427e84ff9fc261)
:   pool: ensure that mover error message always set

[55eb29f](https://github.com/dcache/dcache/commit/55eb29f3f3038325f60e187d34c20546580f6c03)
:   nfs4:  shutdown state handler on destroy

[bc0e891](https://github.com/dcache/dcache/commit/bc0e891e6455f771699a72007afbed6147b29847)
:   billing: Fix date handling for json and yaml output

[ef3d069](https://github.com/dcache/dcache/commit/ef3d069dd73275189543be30160ed29484e7c2ec)
:   billing: Add file size to request records

[ea8b501](https://github.com/dcache/dcache/commit/ea8b501786bff2c6bbaf026d0603e54d1923875a)
:   billing: Improve error message on failur to parse date arguments

[6c409d3](https://github.com/dcache/dcache/commit/6c409d3e04eb2ca6ca78e31c5ca94838dc195205)
:   billing: Reduce startup time of dcache billing command

[bdd5989](https://github.com/dcache/dcache/commit/bdd5989455aad094bece9f38e98d13cea3db0172)
:   billing: Add billing format for PoolHitInfoMessage

[d050876](https://github.com/dcache/dcache/commit/d05087656c66d036914c033b601d04cc1fdb5882)
:   webadmin: minor improvements to rrd4j-based pool-queue plots

[2976ef1](https://github.com/dcache/dcache/commit/2976ef12952b86800f91bc8740577eff385997ee)
:   pnfsmanager,doors: Add user relative upload directories

[a85ef3c](https://github.com/dcache/dcache/commit/a85ef3ccb83855f9f6f4cbc1679c7293af5c54d3)
:   billing: Expose session identifier

[1da82a4](https://github.com/dcache/dcache/commit/1da82a40049f9a1fb9b4fbc9c3893f886d8748f4)
:   rpm: include logrotate config file

[23cfdc5](https://github.com/dcache/dcache/commit/23cfdc51a5b0d9d4f7781c3cfcea69815ff938cb)
:   pool: Fix interpretation of eager option of migration module

[d88a98b](https://github.com/dcache/dcache/commit/d88a98be54eaa96a71b3b7ad9348c6067151976c)
:   srm-client: Output file level errors for sync requests

[f7fc29d](https://github.com/dcache/dcache/commit/f7fc29d8eaec1e3a1cd39e3c61e72cf0dfce65bd)
:   pool: Respect LAN port range for internal srmcp transfers

[05e5f62](https://github.com/dcache/dcache/commit/05e5f62d21d71457393fed011021a31fec353e16)
:   srm: Fix listing of failed, done and cancelled jobs

[8378b5e](https://github.com/dcache/dcache/commit/8378b5e01dc2a439706f91dbb618d7c76cea5c84)
:   cell: Prevent interpreter stack overflow from killing the domain

[a85817f](https://github.com/dcache/dcache/commit/a85817f89123d0b9ec18e805ef7ce6e9cd360631)
:   cell: Declassify eval failure as a bug

[eefea09](https://github.com/dcache/dcache/commit/eefea0955051a8fab2e33276e7587361213a7a62)
:   system-test: add 'start' profile

[1af1d75](https://github.com/dcache/dcache/commit/1af1d7591f0330965b4f418d5ef20d892f481965)
:   spacemanager: fix forbidden property message

[1321d431](https://github.com/dcache/dcache/commit/1321d431e155f11cf1d2e3665f3ac3265ddc9de8)
:   ftp: Fix root path validation for upload directory

[6651bb2](https://github.com/dcache/dcache/commit/6651bb2e2a72b09239ffcc3d71924159172e617a)
:   xrootd: Upgrade to xrootd4j 1.3.5

[96e8a94](https://github.com/dcache/dcache/commit/96e8a940bb461a2d3c31bffc8bc308a87626a5c2)
:   pool: Fix minor errors in migration module documentation

[4dfca00](https://github.com/dcache/dcache/commit/4dfca009d9b2490d3ad15197cbbb21cecb375993)
:   pool: Add JavaDoc to migration JobDefinition

[47b65f6](https://github.com/dcache/dcache/commit/47b65f6b56f61a657c2794f709b4d4e26c83bd8f)
:   pool: Allow multiple replicas for migration jobs

[32505e9](https://github.com/dcache/dcache/commit/32505e951691cf3385ab476e76119e355cf0f9b4)
:   pool: Decouple migration task from migration job

[be91838](https://github.com/dcache/dcache/commit/be918388ba1fb1899b2e2409ed8d9a4361cb3d07)
:   pool: Prevent interruption of replica deletion during HSM flush

[8bb52a8](https://github.com/dcache/dcache/commit/8bb52a87a61403a3b3cd84879365463fd0b126cc)
:   pool: Fix HSM cancellation

[cde169e](https://github.com/dcache/dcache/commit/cde169e0450cb811ba4208735a48ae9c42a20dd0)
:   dcache: Let login cache propagate IllegalArgumentException

[43ecb8c](https://github.com/dcache/dcache/commit/43ecb8c5ffac90014cf339560ca8f4640584c4bd)
:   dcache: Do not cache gPlazma timeouts

[e837405](https://github.com/dcache/dcache/commit/e837405f0388902009298070b3d029627c51527f)
:   test: Upgrade to mockito 1.10.4

[b456232](https://github.com/dcache/dcache/commit/b456232b34fb2e03d1907a312b0715115ced553a)
:   dcache: Use Mockito for CacheLoginStrategy unit tests

[32c877f](https://github.com/dcache/dcache/commit/32c877f8af90124ddd24568a7b48426b45e43695)
:   dcache,nfs,dcap,srm: Drop duplicate LoginStrategy cache

[788b56c](https://github.com/dcache/dcache/commit/788b56c0c2a93b69639ae35eca020795a09c6ecf)
:   cells: fix IAE in 'show pinboard'

[b234566](https://github.com/dcache/dcache/commit/b234566440c54c3fc70c494fa20478633fda2b0e)
:   commons: remove period based gauges

[204a953](https://github.com/dcache/dcache/commit/204a9539ba8732c8a91e77ddd2c8f66fbb6a89d6)
:   commons: update RequestExecutionTimeGauges to accept units

[26bb60f](https://github.com/dcache/dcache/commit/26bb60f46ab9a27c16ff8b7a63c70b26845c58b2)
:   commons: add TimeUtils#unitStringOf()

[ae63e2e](https://github.com/dcache/dcache/commit/ae63e2ed2657066599a09280737a07f56e7e1760)
:   commons: fix TimeUtils nanos to duration string conversion

[1306124](https://github.com/dcache/dcache/commit/130612420e16a2a90e20f9198a166fcd420585c5)
:   hsm: Increase concurrency in nearline storage interface

[d5a20b0](https://github.com/dcache/dcache/commit/d5a20b03fbd524b241320cba53a5f6116429d5b2)
:   srm: Fall back to synchronous saving in case of overload

[2558d56](https://github.com/dcache/dcache/commit/2558d568d95bbd892b4782a2c052aa0db1b525fe)
:   info: Generate NAS by links rather than access

[92b3668](https://github.com/dcache/dcache/commit/92b36682cf3dd4aab14dab64ded6bf40e5660f4d)
:   pool: Fix xrootd vector read limits

[8287987](https://github.com/dcache/dcache/commit/82879878110e5254ae1314c759a5fc4f26aecf0c)
:   chimera: fix NPE on '.(parent)()' for root inode

[25335b0](https://github.com/dcache/dcache/commit/25335b0ac58c6e7e71fe603f98718fbdb51a28b7)
:   alarms version 2: move database cleanup from webadmin to service

[2f92190](https://github.com/dcache/dcache/commit/2f921909fa24f16c667a8b7d6855782dd05839aa)
:   chimera: squash usedFiles() and usedSize() into a single query

[22230c4](https://github.com/dcache/dcache/commit/22230c4e1b851891e6f874e00f526d8c2c9bf752)
:   dcap: fix interaction with Spacemanager

[d045b3c](https://github.com/dcache/dcache/commit/d045b3c2d95b729cf75eae0b114b16b2ef3b30c3)
:   srm-client: Fix logback configuration

[98f2115](https://github.com/dcache/dcache/commit/98f21155a8927aae68a2619c3738bb31f0110fa1)
:   srm: Fix asynchroneous job storage leak

[3fdcf9f](https://github.com/dcache/dcache/commit/3fdcf9f1302a97f55fddebe4d71ce06e75dcd989)
:   unittests: increase timeouts and fix race in DiskSpaceAllocatorTest

[57df557](https://github.com/dcache/dcache/commit/57df557d37bd404678001dfc28f40e5553eeb15e)
:   srm: Minor refactoring of ls command

[1ab18b9](https://github.com/dcache/dcache/commit/1ab18b97742effc9c706a296512dd3e21af18475)
:   srm: Log common misconfiguration preventing upload

[469b75b](https://github.com/dcache/dcache/commit/469b75b1b2e4379e887da0bb7e8860de785e2246)
:   srm: Fix return code and logging on "login errors"

[3a11e20](https://github.com/dcache/dcache/commit/3a11e202ccd9bad3f1668057697c9829e71073f5)
:   alarms (common, dcache, dcache-webadmin, skel):  version 2.

[7175bf0](https://github.com/dcache/dcache/commit/7175bf09ae69fa76825d603e5d0bd7dfc78a51d4)
:   common: Fix race condition in AtomicCounter unit test

[0dfc80e](https://github.com/dcache/dcache/commit/0dfc80eac4703acd629c667e1feaf895812b557d)
:   srm: Fix deadlock like bug

[7680a01](https://github.com/dcache/dcache/commit/7680a0156a1af5b5479af7b4472c2385117cc711)
:   billing plots: use 'transferred' rather than 'size' for bytes

[9f26723](https://github.com/dcache/dcache/commit/9f267231227fa92e928a4a042425b00ca2367e6f)
:   configuration: adjust references to forbidden properties

[14d493e](https://github.com/dcache/dcache/commit/14d493e97588a9f1bb6f148d1f6a5fca23429632)
:   httpd: Use service specific property for list of login brokers

[73c2601](https://github.com/dcache/dcache/commit/73c260104ec0938718a788667448066ab8ddf2e5)
:   xrootd: allow empty xrootd.authz.read-paths and xrootd.authz.write-paths

[fed4abd](https://github.com/dcache/dcache/commit/fed4abd3cc050064ef1f0500deff02a581355f89)
:   scripts: fix java invocation

[d325d16](https://github.com/dcache/dcache/commit/d325d16e29e7454f3ecc916c0b54a42feb6903ee)
:   chimera: protect list initialization from FS inconsistencies

[3273e4a](https://github.com/dcache/dcache/commit/3273e4ac85c2e0c22cbf9d1299beecd89806c0e8)
:   srm: Fix reporting of infinite space lifetime

[70d414e](https://github.com/dcache/dcache/commit/70d414e72c91b40fd914d9f069d17860643ba68f)
:   chimera: Fix creation time flag in ls command

[3c6b4fa](https://github.com/dcache/dcache/commit/3c6b4fa394248d55fa572f6130468e6b386ccd72)
:   Fix CacheException references in error messages

[8ea811d](https://github.com/dcache/dcache/commit/8ea811d576888a8ed9ab3b243fb00aa3560992ea)
:   Mark deprecated properties as forbidden

[a792239](https://github.com/dcache/dcache/commit/a79223986039f06ae46d6c152f32f643ec60782c)
:   Update to Jetty 9

[650413c](https://github.com/dcache/dcache/commit/650413c34cdd343c3e79b7204161852f91e4bee5)
:   dcache-common: change NetworkUtil getCanonicalHostname to prefer DNS name

[626463c](https://github.com/dcache/dcache/commit/626463c1248ef6a87b6a53a39891094f5b0571d5)
:   srm: Make dcache-core independent of srm-server

[c23ab8c](https://github.com/dcache/dcache/commit/c23ab8c4d97dfa9d15e066ebfbbd7a0f49864f95)
:   dcache-srm: Move AuthorizationRecord and related classes to dcache-srm

[bdf4048](https://github.com/dcache/dcache/commit/bdf4048f67750e7092112e2cc9d380a1fe3ca2f5)
:   chimera: do not explicitly remove enties in t_level_x

[c179f3d](https://github.com/dcache/dcache/commit/c179f3df7e991dfc1835aa470ef434853ba0ab45)
:   srm: Align SRM info output with recent changes to scheduler configuration

[f139c2e](https://github.com/dcache/dcache/commit/f139c2eb8f764865876d30aba9a1b09f37c9a742)
:   webdav: remove unused import

[38f4c2c](https://github.com/dcache/dcache/commit/38f4c2ccae602f63627d9ca9a3050602dd3fb785)
:   gplazma2: detect sha512 with RSA in LoginResultPrinter

[72ac7f1](https://github.com/dcache/dcache/commit/72ac7f12af2bdc70033f02c7b5f0f06c108ad1c5)
:   nfs4: add NFS file handle into NfsTransfer class

[437191c](https://github.com/dcache/dcache/commit/437191ce83a127c9b870819da557f574a538973c)
:   nfs4: invalidate vfs cache on successful write

[7c8c18b](https://github.com/dcache/dcache/commit/7c8c18bfff2ca620cc7fc5463cfdf50d87fda3a6)
:   Revert "libs: update sshd to 0.11.0"

[18c188c](https://github.com/dcache/dcache/commit/18c188cd63ac345009cf62b5f3cb398fd04eb5df)
:   Revert "libs: switch to jglobus-2.1.0-SNAPSHOT and bcpkix-1.50"

[9d056fc](https://github.com/dcache/dcache/commit/9d056fc696f416500452cd6b70fcd90feccae1eb)
:   libs: update sshd to 0.11.0

[e061819](https://github.com/dcache/dcache/commit/e061819a308caafb77e26ed25d0cc0b257a7f782)
:   libs: use nfs 0.9.0

[bd94107](https://github.com/dcache/dcache/commit/bd941079b0b39a9b83e4455ec2f8464b6594b70c)
:   libs: switch to jglobus-2.1.0-SNAPSHOT and bcpkix-1.50

[60d5765](https://github.com/dcache/dcache/commit/60d5765c8d367d60d9a2e0b52b34369cafe868e1)
:   Update netty and berkeley DB to latest version

[d5b5f78](https://github.com/dcache/dcache/commit/d5b5f7849f4d596bf272eccaa9661317aba193b7)
:   srm: Fix incomplete restore of "ready queued" jobs

[00d2534](https://github.com/dcache/dcache/commit/00d25349d08cc24671be69d8e42b90ed7893ad1b)
:   cells: Improve pinboard

[a86a976](https://github.com/dcache/dcache/commit/a86a9763411fbe5f62a337b81108124e524f88b1)
:   Avoid thread-unsafe use of SimpleDateFormatter

[f5ae71a](https://github.com/dcache/dcache/commit/f5ae71a27a4f615bde354d5657668cc5add9d88d)
:   dcache-spacemanager: Move space manager to its own Maven module

[83a4fea](https://github.com/dcache/dcache/commit/83a4feaacca4da53335706f4e0a7a17b57075e65)
:   Update billing indexer to avoid deprecated Guava API

[db28dc0](https://github.com/dcache/dcache/commit/db28dc0363230034b15cace4e2cf70233f9ab66a)
:   srm: Remove dead null check

[1c14947](https://github.com/dcache/dcache/commit/1c149472bb5c7eeb608a580f2c535c4933158006)
:   srm: Fix credential store registration

[b3e9b74](https://github.com/dcache/dcache/commit/b3e9b74570779f3a94f464c74984208b2b59512e)
:   srm: Fix restore of bring-online requests on restart

[3c9e3fb](https://github.com/dcache/dcache/commit/3c9e3fb8ada286592ae505cbcd43860c9b3b0ce9)
:   srm: Fix set max ready get command

[5121943](https://github.com/dcache/dcache/commit/51219431097af2b283c9ed3a4a54622f2afad334)
:   pool,ftp: do not query for checksum on write

[7d5cb72](https://github.com/dcache/dcache/commit/7d5cb72264ca12d7629343299f145050ab05b902)
:   libs: update to jglobus-2.0.6-rc7.d

[95a193a](https://github.com/dcache/dcache/commit/95a193a4708d25e05d9c601629af39f3bd61f356)
:   libs: update to nfs4j-0.8.1

[e1cc820](https://github.com/dcache/dcache/commit/e1cc8208d3314091fa3444d372617263b981ca27)
:   chimera: Move new CLI to chimera and delete old CLI

[507c3fc](https://github.com/dcache/dcache/commit/507c3fced23220dbd6a203bc2d4a1e126e67d28f)
:   build: Update to findbugs 3

[9f8822e](https://github.com/dcache/dcache/commit/9f8822e49965fcec8484a349ce5f62c90a512b93)
:   dcache-info: Move info service to its own Maven module

[f9957a9](https://github.com/dcache/dcache/commit/f9957a9faa5d3a3897db5ac8cb5885c49aebaaa0)
:   dcache-srm: Move SRM specific dCache code to new module

[1fb9ca4](https://github.com/dcache/dcache/commit/1fb9ca4b089208bf9acef888d55014037860d91f)
:   chimera: mark as-run if i_dirs_ipnfsid exists

[15d2a0a](https://github.com/dcache/dcache/commit/15d2a0a61e92251e023033b96280e459bcbc4b90)
:   solaris: fix solaris package script and add work-around for pkgmk bug

[f2e9ded](https://github.com/dcache/dcache/commit/f2e9dedd7052e9bbf1a6caea1f1b35b2586af801)
:   acl: add heuristic to detect acl format

[17e6de1](https://github.com/dcache/dcache/commit/17e6de19397e2d974587c9cab991815ab4529412)
:   gplazma: make plugin creation caching optional

[1db22cf](https://github.com/dcache/dcache/commit/1db22cf0d017933b64da167c52fe5248ca901733)
:   chimera: create missing index i_dirs_iparent

[467ad69](https://github.com/dcache/dcache/commit/467ad69ceaa2d5f7cdb4dd8ce21f36015381bdf4)
:   pool: Resolve high memory usage and other issues in sweeper

[53cfdd4](https://github.com/dcache/dcache/commit/53cfdd4dd3bee7dd590016e747303c06bd1a0766)
:   Update third party libraries

[14797dd](https://github.com/dcache/dcache/commit/14797ddac174e77e1aabf2a1873e5878d3d311f2)
:   info: Fix HashMap ordering assumption in unit test

[d06ed79](https://github.com/dcache/dcache/commit/d06ed79d0bd6f1e387fcd10ae3a62b32895d0d35)
:   Make JDK byte code verification bug workaround Java 8 compatible

[c0a68c5](https://github.com/dcache/dcache/commit/c0a68c5a29d48d06dcb10ead9261aadeac074c6d)
:   gplazma: Fix JVM implementation dependency in unit test

[1adf0d0](https://github.com/dcache/dcache/commit/1adf0d0b7cb9c262ab9b07009c53d35b58a6fe65)
:   poolmanager: Suppress stack trace in case of unmatch units

[3425431](https://github.com/dcache/dcache/commit/3425431abcf5457c26e94b21e415b35fbcb7cd78)
:   xrootd: Add billing entry on delete

[f89706c](https://github.com/dcache/dcache/commit/f89706c14c8118b60891572bc1d0e496963cf1e2)
:   bugfix: fix reverseMap not throwing NoSuchPrincipalExceptions

[f21d639](https://github.com/dcache/dcache/commit/f21d63901d40b13ee145483289447421c0e47fd0)
:   kpwd: add support for multiple GIDs

[76f3812](https://github.com/dcache/dcache/commit/76f381250ca6d22cb4735dcee557c3247392d033)
:   Clean up Spring instantiation of database connection pools

[61d7402](https://github.com/dcache/dcache/commit/61d7402e213a3b438f68860a000d73e9948c7836)
:   cells: Fix deadlock during startup

[4b10fe5](https://github.com/dcache/dcache/commit/4b10fe5d1ea40fb8bdeb3ec832e114668a9e7308)
:   Fix several issues in recent alarms changes

[e547954](https://github.com/dcache/dcache/commit/e547954ee9df9559aa92fa745935bd98873fcb04)
:   srm: generate SRM v2.2 Axis-generated code as part of build process

[e013bb7](https://github.com/dcache/dcache/commit/e013bb767da8ce1123fa738c9400092162ed9385)
:   build: add work-around for JDK bug and PowerMock

[b89cd06](https://github.com/dcache/dcache/commit/b89cd06d4d41c0f6b32f7d944a871a913bdb014a)
:   pool: Fix concurrency settings for script nearline storage

[38e3ac3](https://github.com/dcache/dcache/commit/38e3ac367a6ac7696bed1b863388830dfe46194c)
:   poolmanager: Fix 'request clumping limit reached' failures

[abdb8d4](https://github.com/dcache/dcache/commit/abdb8d47fb31af99b539a32369b06d94f5fbe4da)
:   poolmanager: Avoid request leak

[f4584c7](https://github.com/dcache/dcache/commit/f4584c7d7f1931ae3cf1510eab62391b61c24919)
:   pool: Order nearline requests

[8d1ce53](https://github.com/dcache/dcache/commit/8d1ce5367cc28f8b9e910a4a5c05dfaba49ee087)
:   srm: Fix race condition in srmPrepareToGet

[deb5996](https://github.com/dcache/dcache/commit/deb59961e3a9e89b94724b8c4935cfa14d02b92a)
:   webdav: Fix certificate handling for HTTP third-party copy

[f9f9ccd](https://github.com/dcache/dcache/commit/f9f9ccdba6dcb0ef02f39c5e8c0678408740e671)
:   poolmanager: Fix excessive p2p and stage alive checks

[c99aa7b](https://github.com/dcache/dcache/commit/c99aa7b18214d079dfe75e78d55794ecd46eb7d9)
:   srm: Restore estimated wait time update

[d2129e3](https://github.com/dcache/dcache/commit/d2129e330fa06d9a494f9b2662deffde4de4bec6)
:   srm: srm,dcap: Use configured vomsdir and capath

[06cf581](https://github.com/dcache/dcache/commit/06cf58197cabbad56b480ccca77759f937544758)
:   webdav: Kill mover in case transfer times out

[797b966](https://github.com/dcache/dcache/commit/797b966b4723b12f033d2c516d41fc292926a25f)
:   webdav: Make threading and TCP connection limits configurable

[c272c48](https://github.com/dcache/dcache/commit/c272c484ebfd4a95ab81b6e88908fed3ae771f78)
:   pool: Fix several minor issues in nearline storage subsystem

[7f39db9](https://github.com/dcache/dcache/commit/7f39db9755cd151cbce2ac38f6ecdea3df5c40d3)
:   srm,dcap: Use configured vomsdir and capath

[d207324](https://github.com/dcache/dcache/commit/d20732414658c599838e776ce473a7726e23d033)
:   Upgrade to DataNucleus 4

[ce76104](https://github.com/dcache/dcache/commit/ce761048c861c0bff59e927247c90d35cf1a8239)
:   Don't use legacy properties

[658ff68](https://github.com/dcache/dcache/commit/658ff6850c87a08127ed312359e873825d6b1eeb)
:   alarms: eliminate httpd.alarms.db.xml.path -- missing deletion of batch check

[4a66f6c](https://github.com/dcache/dcache/commit/4a66f6c982a90024141e19b842d94ddfca005cdf)
:   alarms: eliminate httpd.alarms.db.xml.path

[325948d](https://github.com/dcache/dcache/commit/325948d7553c6fecfb73204625cdc30c30c6589c)
:   alarms: convert definitions into marked alarms

[759484d](https://github.com/dcache/dcache/commit/759484ddbf222222d956b8fd8d21d27b56ad9049)
:   poolmanager: remotve unused variable

[c3acc43](https://github.com/dcache/dcache/commit/c3acc4360830f7dd88a2a789355f9477743fd125)
:   src: move VspArgs into dcache-dcap module

[ff5e042](https://github.com/dcache/dcache/commit/ff5e0423492a4931b188e48e2599962f1013a377)
:   alarms: decorate data source to capture connector errors as alarms

[1ba6f6c](https://github.com/dcache/dcache/commit/1ba6f6cb36ae7878653885eba5ce84215d31436e)
:   network utils: add constant for canonical host name

[d386a4d](https://github.com/dcache/dcache/commit/d386a4ddfafbb56a080423b99477a5417edd4e18)
:   alarms: add fuller support for Markers

[805b27c](https://github.com/dcache/dcache/commit/805b27c486b6bfcc2336256028fefcea089cb55d)
:   srm: fix deserialise of TExtraInfo

[852ea99](https://github.com/dcache/dcache/commit/852ea99226f55c9f67d56cb036b524829c88dc3b)
:   srm: fix NPE when checking delegated credential

[00d2f1a](https://github.com/dcache/dcache/commit/00d2f1afc10a328bf2894c4cc807e53a8bd2b9cc)
:   srm: fix NPE when checking delegated credential

[5e46143](https://github.com/dcache/dcache/commit/5e461434446598d52f34492501e09b554d71bbe9)
:   srm: fix deserialise of TExtraInfo

[ed288b0](https://github.com/dcache/dcache/commit/ed288b0374c7c1f78966fb4c8cdf5762ad1250a7)
:   srm: fix IllegalStateTransition for COPY requests

[dc34d0f](https://github.com/dcache/dcache/commit/dc34d0fe6647c177a0692f15381279665162f926)
:   releases: update dCache version to v2.11




</div>
</div>
</div>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js" type="text/javascript"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.10.2/jquery-ui.min.js" type="text/javascript"></script>
<script src="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js" type="text/javascript"></script>
<script src="https://google-code-prettify.googlecode.com/svn/loader/run_prettify.js" type="text/javascript"></script>