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release-notes-3.1
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HTML header: <title>dCache 3.1 Release Notes</title>
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<h1>What's new in dCache 3.1<br/>
<small>The release notes</small></h1>
</div>
## Highlights
- Plenty of NFS door improvements
- Chimera can track file upload status
- OpenID connect support for WebDAV 3rd party copy
## Incompatibilities
- Dropped support for regular expression matching in alarms
## Acknowledgments
Thanks to Johan Guldmyr for his constributions.
## Differences from dCache v3.0
The notes for [release 3.1.0](#release3.1.0) detail the differences
from dCache 3.0. Please read this section *very carefully* when
upgrading from this version.
## Release 3.1.35
### scripts
The instructions that are printed out once `dcache pool convert`
completes successfully now correctly point to the
property that needs to be updated, namely `pool.plugins.meta`.
### Changelog 3.1.34..3.1.35
<!-- git log 3.1.34..3.1.35 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[fa2e48ddb7](https://github.com/dcache/dcache/commit/fa2e48ddb7d297dbb36ab56494225d71ca08ed75)
: [maven-release-plugin] prepare release 3.1.35
[f254c2ef2c](https://github.com/dcache/dcache/commit/f254c2ef2c7fdf4ddc27038f84e9a8c2a0fe1568)
: scripts: update reference to configuration property
[d24eeb72bc](https://github.com/dcache/dcache/commit/d24eeb72bc8e5a11a7c5b867f22dbc47c808e690)
: pool: fix metadata migration tool to use Path
[db246f71cf](https://github.com/dcache/dcache/commit/db246f71cf3a1926791462ff2a58d8c5e00e6750)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.34
### dcache-resilience
There was a small regression in the way resilience computes
the number of operations necessary to adjust copies when
a storage unit definition changes.
The current rellease fixed computation of operation count when storage requirements change.
### ftp
In order to aid diagnosing problems when FTP response being lost, now dcache logs failures to wrap/encrypt responses.
### webdav
The current release improved error handling for client authentication with OpenID-Connect.
A more complete set of information is now logged if OIDC delegation fails,
supporting the ability to discover why the delegation failed.
### Changelog 3.1.33..3.1.34
<!-- git log 3.1.33..3.1.34 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[d3d13fb](https://github.com/dcache/dcache/commit/d3d13fb6eb0a0d1b23358799ae8984303975e0bf)
: [maven-release-plugin] prepare release 3.1.34
[89b3a98](https://github.com/dcache/dcache/commit/89b3a9876a09e804423669507f84a3563a1e04ea)
: scripts: add support for parsing ZooKeeper transaction logs
[f08a33d](https://github.com/dcache/dcache/commit/f08a33dfa7fc83f879b80442395702b344f78298)
: ftp: log failures to wrap/encrypt responses
[7c323dc](https://github.com/dcache/dcache/commit/7c323dc29b1867144ae23eb7794605dda634b2fb)
: dcache-resilience: fix computation of operation count when storage requirements change
[3701fb3](https://github.com/dcache/dcache/commit/3701fb3bc833beaa60ea727e7275cd4f56012e77)
: webdav: log errors if OIDC delegation fails
[b6adcd9](https://github.com/dcache/dcache/commit/b6adcd979ec5f69886e42b841879d93c8c9fdc43)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.33
### ftp
Error reporting in the FTP service has been improved: in some mixed IPv4 / IPv6 scenarios,
only unclear error messages were reported.
### Changelog 3.1.32..3.1.33
<!-- git log 3.1.32..3.1.33 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[18bdc90167](https://github.com/dcache/dcache/commit/18bdc90167a08085c5d30f31eba775cdf313bac4)
: [maven-release-plugin] prepare release 3.1.33
[9d5ec21eaa](https://github.com/dcache/dcache/commit/9d5ec21eaace1cd44b988be340eea98eb4b8cb7a)
: ftp: returned error is too vague for meaningful investigation
[7ec05b8f0f](https://github.com/dcache/dcache/commit/7ec05b8f0f022833f54d1e35316ce596cbffe8a7)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.32
### gplazma
gplazma now supports a Fermilab-specific authorization data source in JSON format.
### pool
During active ftp transfers, connection problems would lead to the rather unhelpful error
message "451 General problem". This error reporting was refactored, so that diagnosis
of the cause is now greatly facilitated.
### poolmanager
A potential NullPointerException (that was not observed in real-world usage until now)
was fixed in Pool Manager.
### resilience
A correction to resilience's error handling results in no more reports on
non-resilient (but corrupted) files.
### skel
A set of old properties controlling alarms that have been marked as deprecated before
are now forbidden.
### spacemanager
In order to facilitate debugging, Space Manager now logs link-group related content
in greater detail.
### Changelog 3.1.31..3.1.32
<!-- git log 3.1.31..3.1.32 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[3a2169d6d9](https://github.com/dcache/dcache/commit/3a2169d6d9affb55ebe84273290d207b7e4119ee)
: [maven-release-plugin] prepare release 3.1.32
[4a5f1cad02](https://github.com/dcache/dcache/commit/4a5f1cad026c246a8b6f5a6c2b2d8a979b01ec08)
: poolmanager: fix migration command if named pool is removed
[67967f44ba](https://github.com/dcache/dcache/commit/67967f44ba57a3fc375d520765195c9ae559b1f9)
: dcache-resilience: repair over-aggressive handling of broken file messages
[5cfec763db](https://github.com/dcache/dcache/commit/5cfec763db36f6b8747b85408138608dc2ffa651)
: pool: fix error message for failed active FTP transfers
[964a3a3187](https://github.com/dcache/dcache/commit/964a3a318780e1fe496b3dff58da5a61975972bc)
: fix the project version in pom.xml
[a8215d2f72](https://github.com/dcache/dcache/commit/a8215d2f72c470e5f0bde608c1967111374e4104)
: gplazma-fermi: fix last modified check in junit test
[5b1c43982b](https://github.com/dcache/dcache/commit/5b1c43982b1213d806bf05cf16b6ae8fe6565817)
: spacemanager: add remote pool monitor debug logging
[f8c0363010](https://github.com/dcache/dcache/commit/f8c036301048f70a6f7a7d18117fef645e1471e9)
: gplazma-fermi: add mapping plugin to support VO group and username from file
[d85a87350f](https://github.com/dcache/dcache/commit/d85a87350fdc4d7df2434456f4947eefc9cae1be)
: skel: make deprecated alarms properties forbidden
[0bfdadac3b](https://github.com/dcache/dcache/commit/0bfdadac3bdee84b8cfce565b97e0557c1492348)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.31
### resilience
Logging for cases where file replication was fatally aborted was improved. Previously, alarms
messages pertained to the PNFSID of the affected files. In rare cases, like when facing
network congestion, many hundreds of alarms could be created. With this change, alarms messages
refer to the storage unit, and a suffix based on an hourly timestamp is added to the
alarm message. The alarm will thus be incremented during the hour but a new
alarm will be created (only) hourly; in this way, those receiving
email alerts will receive them once an hour.
### Changelog 3.1.30..3.1.31
<!-- git log 3.1.30..3.1.31 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[099c5d2803](https://github.com/dcache/dcache/commit/099c5d28037a0e2be55d70d8653a4db16f4009c3)
: [maven-release-plugin] prepare release 3.1.31
[d10d458c13](https://github.com/dcache/dcache/commit/d10d458c1372bb2672c69d3f41380271d07115ee)
: alarms: fix broken path
[94870ff83b](https://github.com/dcache/dcache/commit/94870ff83b2648e682c6a9881c1733bdcb2c0dbe)
: [maven-release-plugin] prepare for next development iteration
[a6ce72058d](https://github.com/dcache/dcache/commit/a6ce72058da0ac0c7c242ba7c7bdf603f73ab084)
: substituted Calendar for Instance which was failing.
[05383a7a36](https://github.com/dcache/dcache/commit/05383a7a36583000e060d0cf262acf8cb133bae7)
: dcache-resilience: avoid spamming alarms with abort messages
## Release 3.1.30
### ftp
A bug (that was not observed in real-world settings yet) that might have caused
NullPointerExceptions was fixed in the ftp service.
### httpd
dCache will no longer log a stack-trace if HTTP
requests are made asking for information from the info service when the
info service is not running.
### poolmanager
dCache 3.0 introduced a regression where a dCache domain does not
start up if it hosts a poolmanager with poolmanager.conf containing
either the "rc set sameHostCopy" or the "rc set sameHostRetry" command.
This regression was fixed.
### resilience
Error handling within the Resilience service was improved.
### Changelog 3.1.29..3.1.30
<!-- git log 3.1.29..3.1.30 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[13c13841ea](https://github.com/dcache/dcache/commit/13c13841eaa360be69e02d602d6d5f4a6a99cb9f)
: [maven-release-plugin] prepare release 3.1.30
[d5d2b5d349](https://github.com/dcache/dcache/commit/d5d2b5d349589bf78ba2fc8d1ff07a01950142e9)
: dcache-resilience: handle properly RuntimeExceptions from tasks
[a2e92188c8](https://github.com/dcache/dcache/commit/a2e92188c8f5b8268acf8481df7f47e86e8f4944)
: ftp: ensure adapter is closed
[1093e95890](https://github.com/dcache/dcache/commit/1093e95890a8e348fe62807900b174d9c6ac2656)
: ftp: remove rare NullPointerException when proxying data
[d9a0e4a020](https://github.com/dcache/dcache/commit/d9a0e4a020702a1e93d85704bd7e0758e9e5f039)
: httpd: do not log an exception if info cell not running
[14a437035a](https://github.com/dcache/dcache/commit/14a437035a00d0eee12ae551663233242bf601aa)
: poolmanager: fix poolmanager startup with certain poolmanager.conf content
[758772c015](https://github.com/dcache/dcache/commit/758772c0158dc9ce757a79c5a1594a352f95cad0)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.29
### dcache-resilience
When a checksum or broken file message/error is generated,
Resilience makes a best effort to (a) remove the broken
copy and (b) make another replica. This, of course, is not always possible, particularly if
the broken file is the only accessible copy. This resulted in faulty behavior
particularly the thrashing noted in the case of a restaging operation which results in a checksum error.
This is now fixed.
The current release improved error handling for resilience.
It fixed unnecessary Migration Task exceptions resulting from
source pools with no replica in the repository.
Now it should be possible for Resilience to use pools blocked only for
writes from doors.
### Changelog 3.1.28..3.1.29
<!-- git log 3.1.28..3.1.29 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[9671b92](https://github.com/dcache/dcache/commit/9671b92392ceefb4e0b6ca51786f0789eeba16bb)
: [maven-release-plugin] prepare release 3.1.29
[49f750f](https://github.com/dcache/dcache/commit/49f750f2a9fc75f9ff90bdf675f38e1bac3c009a)
: bad commit put DOWN twice
[8b40d82](https://github.com/dcache/dcache/commit/8b40d8288333dd2a875dde1e4c4ad7ed38c837e7)
: dcache-resilience: define non-writable pool to mean p2p-client is disabled
[582f231](https://github.com/dcache/dcache/commit/582f23193db913831158de5925ed154bb678f218)
: dcache: fix remote pool monitor wait bug
[3dd8aa8](https://github.com/dcache/dcache/commit/3dd8aa81c1803996bfa0de4ab88bf1d2b39b8d67)
: dcache-resilience: repair handling of broken files*
[51c2bfb](https://github.com/dcache/dcache/commit/51c2bfb88063ba61527452a3baf40b551bdce732)
: [maven-release-plugin] prepare for next development iteration
[efe0d91](https://github.com/dcache/dcache/commit/efe0d913ec81399fb4ce9928658e8f51de8a7770)
: dcache-resilience: fix bug in source handling with Clear Cache Location messages
## Release 3.1.28
### cells
The current release added explicit ZooKeeper/Curator monitoring. Events generated by ZooKeeper and Curator are now logged in a new, which may help diagnose
problems that are suspected to come from bad ZooKeeper interaction.
### frontend
The current release improved the error handling to work with Jackson exceptions.
### Changelog 3.1.27..3.1.28
<!-- git log 3.1.27..3.1.28 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[f19d514](https://github.com/dcache/dcache/commit/f19d514dcb255d2f5f8f2964ba996cf33a370ebf)
: [maven-release-plugin] prepare release 3.1.28
[8e504a8](https://github.com/dcache/dcache/commit/8e504a87e3671fb2e4da00e2b7012465a82fb265)
: dcache-resilience: fix wrong assumption about error type in Message
[b649d82](https://github.com/dcache/dcache/commit/b649d8207c870eb97d9726700cbbccb9071d36a5)
: cells: add explicit ZooKeeper/Curator monitoring
[70cd7db](https://github.com/dcache/dcache/commit/70cd7db034692dc883b9cad2c1ca4f602df3987d)
: frontend: Map requests with bad JSON to HTTP 400 Bad Request status code
[d9685d9](https://github.com/dcache/dcache/commit/d9685d9c8bd8e95385c407e2465c138f0720e9a3)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.27
### nfs
NFS door has been updated to return NFS4ERR_LAYOUTUNAVAILABLE for DOT files.
### star
The current release improved documentation to help dCache admins to have a better understanding of how to generate StAR record.
The current release fixed fix printing exception error message for dcache-star script if there's a problem when run with newer versions of Python.
### Changelog 3.1.26..3.1.27
<!-- git log 3.1.26..3.1.27 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[3c489d7](https://github.com/dcache/dcache/commit/3c489d709d997feb218ef4d0d1141e6c57207da3)
: [maven-release-plugin] prepare release 3.1.27
[ac06cd7](https://github.com/dcache/dcache/commit/ac06cd7f822310f27e3fd032097b2c01fb4b1c4b)
: nfs: return LAYOUTUNAVAILABLE for DOT files
[844c0e4](https://github.com/dcache/dcache/commit/844c0e473b78d06604d6f06d1bceda9cc6125bdd)
: star: fix printing exception error message
[d913a42](https://github.com/dcache/dcache/commit/d913a424ccd311864bb5061bafb63c2a513cfa9d)
: star: update documentation to provide better description of script
[e1b4fe4](https://github.com/dcache/dcache/commit/e1b4fe4cf2dcf833096cc868b80d0ac46468caed)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.26
### info
The info service collects information about who is allowed to reserve space.
Since some of this information, like VOs, usernames and gids, may be considered
sensitive information, this update allows admins to control whether or not
to publish them. The default behaviour is unchanged from the previous behaviour,
i.e. info publishes everything. If a site admin wants to change this,
the `info.limits.show-only-vo-authz` property can be set to `true`.
### scripts
The dcache script and manpage still refered explicitely to Java 6. This patch
changes the phrasing of the respective text.
### Changelog 3.1.25..3.1.26
<!-- git log 3.1.25..3.1.26 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[1121bd4a3a](https://github.com/dcache/dcache/commit/1121bd4a3a1c5b19352eb31cc5c80367087d3a2d)
: [maven-release-plugin] prepare release 3.1.26
[f3f2d8f0c7](https://github.com/dcache/dcache/commit/f3f2d8f0c76c44db017710998d48d88c3c0788fd)
: scripts: update reference to JDK to avoid mentioning specific java version
[c2eff238db](https://github.com/dcache/dcache/commit/c2eff238db287349306d44c6348fff4ca99ac7f4)
: info: allow admin to control whether non-VO / non-FQAN identities are shown
[769c72a044](https://github.com/dcache/dcache/commit/769c72a0448c829d03ecdfdc9dbc405528d0bba3)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.25
### chimera
The current release fixed previously introduced issues for `lost+found` directory permissions.
Now, the `lost+found` directory permissions is updated without causing
problems if that directory has been removed or permissions have been
modified.
### Changelog 3.1.24..3.1.25
<!-- git log 3.1.24..3.1.25 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[d0d0dda](https://github.com/dcache/dcache/commit/d0d0dda8b2cbff42ba5b3fef4125b0c6149573ef)
: [maven-release-plugin] prepare release 3.1.25
[646a6f0](https://github.com/dcache/dcache/commit/646a6f02beff1d5fe58b09515320c68b6ad75487)
: chimera: correct previous attempt to fix 'lost+found' directory permission
[794644b](https://github.com/dcache/dcache/commit/794644b4a0aca38744c35f9ecc53285e42fbda38)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.24
### nfs
The current release fixes transfer leak, if the door failed to start a mover.
### pnfsmanager
The current release improves documentation for `set log slow threshold` admin command help.
### spacemanager
When trying to upload into dCache using a space-token where there
is no selectable link for this operation then the user was presented with
a generic error message; for example,
`No write links configured for [net=131.169.71.98,protocol=GFtp/2,store=dot:user@osm,cache=,linkgroup=]`.
This behavior is changed now and an improved error message is returned to the user if they attempt an upload data into dCache using a space-reservation in a way where
`poolmanager` configuration prevents the upload.
### webdav
The current release improved error handling when dCache is full.
### Changelog 3.1.23..3.1.24
<!-- git log 3.1.23..3.1.24 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[710eed6](https://github.com/dcache/dcache/commit/710eed6202efd2ed6309de21a079394407fc9ffb)
: [maven-release-plugin] prepare release 3.1.24
[9d95040](https://github.com/dcache/dcache/commit/9d9504068d1254438f1ecbf740aa3962d2354e18)
: systemtest: work with new OpenSSL DN format
[e4a66f7](https://github.com/dcache/dcache/commit/e4a66f768a8067291be35f2e8661b397f0ee6e3b)
: spacemanager: provide space-specific error message on bad upload
[425ed04](https://github.com/dcache/dcache/commit/425ed0499d974d6de361f180c6ece6fa249c22a8)
: webdav: return 507 Insufficient Storage when dCache is full
[9cef515](https://github.com/dcache/dcache/commit/9cef5154cf5b66422efc15e67b3c58b49005cd20)
: pnfsmanager: update slow logging admin command help
[ca2ff7b](https://github.com/dcache/dcache/commit/ca2ff7bbe444c2257702b880dd1deefa6c0c345a)
: nfs: fix transfer leak, if the door failed to start a mover
[1d4967c](https://github.com/dcache/dcache/commit/1d4967cc267b1a887b0075b44d64b44722c02d99)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.23
### cells
dCache no longer logs stack-traces when running multiple cells with the same name.
### pool
For certain failures,the pool was logging transfer failures twice. This is now fixed.
### rpm
dCache ensures now that user 'dcache' is a member of group 'dcache'.
### star
The current release Introduced new property `star.db.*`, which makes possible now to run PostgreSQL on non-standard ports can use STAR.
### statistics
Timeout in contacting PoolManager no longer results in a stack-trace being logged.
### Changelog 3.1.22..3.1.23
<!-- git log 3.1.22..3.1.23 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[71cf627](https://github.com/dcache/dcache/commit/71cf627bebfcdd0d1eaf7d297d79d5627df9d6e9)
: [maven-release-plugin] prepare release 3.1.23
[585ecb4](https://github.com/dcache/dcache/commit/585ecb4c9fdf449c9f6c8d764074c1f66fc5f02b)
: [maven-release-plugin] prepare for next development iteration
[6dc8c9f](https://github.com/dcache/dcache/commit/6dc8c9f323f13f911e6d6c10ad0077bf98141ba7)
: pool: fix double logging on remote FTP transfer error
[ebebb47](https://github.com/dcache/dcache/commit/ebebb47c980f98df018b0b6100e5d4db0b83a9e3)
: pool: Fix how certain bugs are logged
[8367510](https://github.com/dcache/dcache/commit/8367510aaadede0310295e4cd5bd43b6be5196ad)
: star: support PostgreSQL running on non-standard TCP ports
[da9d343](https://github.com/dcache/dcache/commit/da9d34395ee9f6326899e02d55b0aa7dce3e5e7f)
: rpm: don't assume existing dcache user is member of dcache group
[9d0b51c](https://github.com/dcache/dcache/commit/9d0b51cadc60cd07dee95694f64331ac8d3dc665)
: cells: don't log stack-trace on starting cell with same name as running cell
[1dde970](https://github.com/dcache/dcache/commit/1dde970335febc7eecec0170a5263a874ab0d685)
: statistics: avoid stack-trace on internal timeout
## Release 3.1.22
### admin
The admin interface reported an attempt to connect to an absent cell as a bug. The current release fixed the issue.
### httpd
Requests to httpd targeting an unknown resource was returning `200 OK` response code. Nevertheless the `404 NOT FOUND`
response would be closer fit. This is now fixed.
### nfs
The current release corrects inaccurate documentation of `nfs.enable.pnfsmanager-query-on-move`.
### pool
Closing dcap mover connection no longer logs a stack trace.
### Changelog 3.1.21..3.1.22
<!-- git log 3.1.21..3.1.22 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[6dc76ac](https://github.com/dcache/dcache/commit/6dc76acf6cf726a3e1a27bff938469ee0dda29c4)
: [maven-release-plugin] prepare release 3.1.22
[41f5590](https://github.com/dcache/dcache/commit/41f55905c7f46a7a4144b2b165151434c488c1f4)
: nfs: fix documentation of nfs.enable.pnfsmanager-query-on-move
[2dbd723](https://github.com/dcache/dcache/commit/2dbd723e7da09817537f0d7c0dfae489ff44455d)
: admin: do not report attempts to connect to missing cell as a bug
[0edf1de](https://github.com/dcache/dcache/commit/0edf1dee31134c20ca5d150128e10184e1863381)
: pool: fix stack-trace when closing dcap mover connection
[510516c](https://github.com/dcache/dcache/commit/510516cc3f83777d2a8ac6466335a74ba6ead3c8)
: httpd: return 404 status code on an unknown page
[9d6a1bc](https://github.com/dcache/dcache/commit/9d6a1bc00fb25771e7016a0be14acbab31e41b71)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.21
### Changes affecting multiple services
dCache no longer logs stack-traces if a Java VirtualMachineError occurs. This is unnecessary as dCache was (presumably) working fine until Java
discovered a problem.
### chimera
Sites updating to dCache 2.15 or later might observe that a lost+found directory with incorrect permissions was created during the update. This
patch ensures correct permissions. Since we cannot know if the current permissions in lost+found are
intended, this patch does not modify any existing lost+found directory
permissions.
### pool
The `sweeper free`command no longer logs a stack trace if it is started with incorrect input information.
An irrelevant stack trace was logged by the pool. This release corrects that.
### Changelog 3.1.20..3.1.21
<!-- git log 3.1.20..3.1.21 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[60c00d59ab](https://github.com/dcache/dcache/commit/60c00d59abeb4e98f98c959be1462b63f0861066)
: [maven-release-plugin] prepare release 3.1.21
[067a924d47](https://github.com/dcache/dcache/commit/067a924d47241f05c019f4e66e12d6f3972dd580)
: chimera: update schema migration when creating 'lost+found' directory.
[615ecbf90b](https://github.com/dcache/dcache/commit/615ecbf90bbc64dca692c05c49e419954b5c2a03)
: pool: fix stack-trace on bad command input
[43bef5f47c](https://github.com/dcache/dcache/commit/43bef5f47c2a2a616b6b1150bfb37fe674814bbe)
: pool: fix stacktrace on FaultEvent logging
[4915654b99](https://github.com/dcache/dcache/commit/4915654b99745c178ef8a2ef2b5245ab1cc83286)
: system: Don't log stack-trace on fatal JVM error
[afe4f5e686](https://github.com/dcache/dcache/commit/afe4f5e6864bdfd321309492a25537b38a7141b1)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.20
### alarms
Until now, the sorting order of alarms did not provide a correct ordering
for all types of alarms. With this release, alarms are now implicitly ordered
by at least their latest modification timestamp.
### resilience
One of the features of resilience is the enforcement of file
partioning on pools according to pool tags. The pool tag
restrictions are observed whenever a file is copied. In
addition, it is rechecked when a storage unit is updated,
in order to make sure the files are distributed correctly
according to the new requirements. This is done by
removing the offending copies and recopying them in
a new location.
Should files get redistributed, however, by rebalancing or
a migration job, it is possible that the partitioning will
be violated, since only resilience observes it.
The resilience service now verifies that files are distributed according to the requirements
specified by pool tags while doing periodic scans (or scans initiated through the admin
command).
### statistics
A possible race condition was removed from the implementation of the `create stat` admin command.
### Changelog 3.1.19..3.1.20
<!-- git log 3.1.19..3.1.20 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[53f0a17c12](https://github.com/dcache/dcache/commit/53f0a17c12c46dfeef56cad73192d05c2f4e51c6)
: [maven-release-plugin] prepare release 3.1.20
[fcb4faa929](https://github.com/dcache/dcache/commit/fcb4faa9297aa1ea288ac60288f1e3d6bf8b6508)
: statistics: fix race in "create stat" admin command
[d5f34e89de](https://github.com/dcache/dcache/commit/d5f34e89de7054ef8e51d0c6652b7d96e3483eb6)
: srm: fix stacktrace on database failure
[0748fe98a4](https://github.com/dcache/dcache/commit/0748fe98a44d4f89b3401a9ea14bd7fe30dc78ce)
: alarms: revert LogEntry.compareTo() to throw NPE on null object
[ea90412a71](https://github.com/dcache/dcache/commit/ea90412a71842889d3b117b766ad7c6ec7794dad)
: resilience: force tag partition checking on scans from admin command and periodic checks
[8df66795d7](https://github.com/dcache/dcache/commit/8df66795d79fb316ad94c991cb729c758a5ed558)
: alarms: fix natural order comparator to use timestamp first
[72563ffb16](https://github.com/dcache/dcache/commit/72563ffb161a3d02785ad9b84fc41831541a74f5)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.19
### dcap
A pool that has gone offline and comes back up again may become
very slow to respond due to a large amount of superfluous error
messages to dcap clients that disconnected in the meantime. This
patch ensures a more responsive reaction to these cases by
introducing a time-to-live value for such messages.
### pool
Error reporting was improved for cases of IO errors in pools.
### Changelog 3.1.18..3.1.19
<!-- git log 3.1.18..3.1.19 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[b40a7114b4](https://github.com/dcache/dcache/commit/b40a7114b4105da4ff56dbb503c57cfae9e9307e)
: [maven-release-plugin] prepare release 3.1.19
[2eeddcc26d](https://github.com/dcache/dcache/commit/2eeddcc26db8c9698d37c22ab15dbddb9e1b6f23)
: pool: avoid 'null' and other nondescript error messages
[0c03b8888c](https://github.com/dcache/dcache/commit/0c03b8888ccda1216d646a9745f2853d871603e4)
: [maven-release-plugin] prepare for next development iteration
[761898927d](https://github.com/dcache/dcache/commit/761898927d3ae360869d6ccb68b421290c39e0cf)
: dcap: add TTL information to dcap messages
## Release 3.1.18
### Changes affecting multiple services
Many dCache components use RemotePoolMonitor to provide fast access to
the information that PoolManager has about pools. In order to facilitate
system diagnosis, the 'info' admin command was augmented by information
about the current status of the RemotePoolMonitor.
### pool
A bug in gfal2 results in FTP transfers being aborted some 50 ms after
being initiated. This results in the door killing the mover shortly
after the pool received the PoolDeliverFile message. If the mover is
not queued, but not yet fully started, this may lead to the pool
disabling itself. This patch corrects that problem, ensuring that
the pool continues to run despite any aborted transfers.
### xrootd
In the 4.7 releases, the xrootd client started enforcing
protocol requirements for kXR_login which, unfortunately,
broke access to dCache. The xrootd client expects an answer
with a 16-character session ID from the door and then the
pool after the redirection. Without this ID, the client
would retry (without success) repeatedly and appear to hang.
dCache's xrootd implementation has been augmented with the session
ID, enabling it to work with xrootd clients of version 4.7 and up.
### Changelog 3.1.17..3.1.18
<!-- git log 3.1.17..3.1.18 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[9c1b699547](https://github.com/dcache/dcache/commit/9c1b699547903ae08aa37aaf1d2b8855140a6fed)
: [maven-release-plugin] prepare release 3.1.18
[98a3c6c43a](https://github.com/dcache/dcache/commit/98a3c6c43afb44bed3b8b119c1cda537a3de3b74)
: many: add diagnostic information about remote pool monitor
[9ea035f83d](https://github.com/dcache/dcache/commit/9ea035f83da8a538b718f69eaa54f58ba532ca46)
: pool: dont disable pool if mover cancelled before open
[c669be7638](https://github.com/dcache/dcache/commit/c669be763887379897d120fcfc7cfe65cc9c368d)
: [maven-release-plugin] prepare for next development iteration
[4e791a9cd0](https://github.com/dcache/dcache/commit/4e791a9cd054c5c163ce3d3ab5f39974a5e7b7d3)
: dcache: fix bug in PoolSelectionUnitV2 match()
[51159b2435](https://github.com/dcache/dcache/commit/51159b2435b62826c9752080b90837b67b1afded)
: dcache-xrootd: Fix login handshake to support xrootd clients (> 4.7.0)
[c9155d17a8](https://github.com/dcache/dcache/commit/c9155d17a889a9d1733bdea3326757016bdfdf1d)
: dcache-xrootd: (WIP) Add support to the xrootd (kxr_)posc flag in (kXR_)open.
## Release 3.1.17
### cells
The current release improved some problematic error messages has better error reporting to ensure bugs are understood.
### httpd
The curren release fixed the issue of change of format in transfers.txt after upgrading from 2.13 to 2.16.
### pool
The current release fixed log and alarms duplication when rebuilding broken entry.
### webdav
Regression fixed in OPTIONS output.
### Changelog 3.1.16..3.1.17
<!-- git log 3.1.16..3.1.17 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[f16c05b](https://github.com/dcache/dcache/commit/f16c05b82bba80f2f2d0a234c26d35d58975f871)
: [maven-release-plugin] prepare release 3.1.17
[c62d4ca](https://github.com/dcache/dcache/commit/c62d4caf9df536d185d0162cfc1f4ee15a190124)
: httpd: restore millis to transfer time for transfers.txt
[7564d4f](https://github.com/dcache/dcache/commit/7564d4f6f6ea2fa251fbcf14bdb23387412b20dd)
: chimera: fixed database query for storing multiple checksums for a file.
[2a8fe83](https://github.com/dcache/dcache/commit/2a8fe83a19d28f2916397b78b12c6b63978a1abc)
: pool: fix log and alarms duplication when rebuilding broken entry
[1fc84b8](https://github.com/dcache/dcache/commit/1fc84b8dcf7732cdcefc53483e467e88a2ba35af)
: cells: better error reporting to ensure bugs are understood
[d1b1789](https://github.com/dcache/dcache/commit/d1b1789ef61456a78454a7afdf0fcf7eeb661c6d)
: webdav: fix regression in OPTIONS response
[022840f](https://github.com/dcache/dcache/commit/022840f9bc52ac632c361726fd69d2d83fc86e5f)
: chimerashell: use chimera.db.* options as defaults
[d8961f4](https://github.com/dcache/dcache/commit/d8961f428c29a80924d045c4ab6ef978b436eb9d)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.16
### nfs
The nfs doors did not shut down cleanly. This slowed down the shutdown sequence.
This is now fixed and dCache shutdown is faster and less likely to suffer problems.
### pool
The current release fixed regression in GridFTP OPTS CKSM command and GridFTP `OPTS CKSM` command is supported again.
The current release fixe regression with third-party pull transfers using GridFTP, with
dCache acting as the GridFTP client that prevented data integrity
checks.
### resilience
When resilience tries to copy or remove a file, and it is no longer
in the namespace, this should be a fatal error, differently from
the discovery that a replica is no longer in cache. These two
errors, however, were treated the same way. This is now fixed and the correct behavior is
immediate abort of operation when file is not in namespace.
The current release improved error handling for file deletion during scan correctly it fixed bug in formatting and handling of cache exception types.
When doing a pool scan, the storage unit information must be
recovered for each file. This is done from the chimera attributes.
The code checks an internal map for an index number corresponding
to the unit it knows about from the PoolMonitor.
However, if the pool selection unit configuration changes such that
a storage unit is eliminated, that mapping will also be deleted
from resilience. In the case that the attributes stored in
Chimera still have the older storage class information, there
will be a NoSuchElementException thrown.
This is fixed now and Pool scans that encounter this situation do not get stuck
forever in the queue.
### webdav
In RFC 7230, section 3.2, it states that HTTP header names should be
case insensitive. Despite this, the standard milton mechanism for
acquiring header information is case sensitive, which (in turn) means
that several HTTP header values in dCache are similarly case sensitive.
There were reports that this case sensitivity has caused problems with certain clients (e.g., go).
The current release fixed this issue and headers that control third-party transfers are now case insensitive, so should work with more clients.
### Changelog 3.1.15..3.1.16
<!-- git log 3.1.15..3.1.16 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[67ced36](https://github.com/dcache/dcache/commit/67ced3654e575d58b3f9fe37d5ae32c1de545283)
: [maven-release-plugin] prepare release 3.1.16
[d9fdbbe](https://github.com/dcache/dcache/commit/d9fdbbe67e4eb89a25b54a1f8ce22c6ebf811e2b)
: Update FileOperationHandler.java
[f0e6971](https://github.com/dcache/dcache/commit/f0e6971f211767dfc8dc6029758e5fccac87cfc0)
: pool: fix data integrity regression for 3rd-party GridFTP pull transfers
[890ebb6](https://github.com/dcache/dcache/commit/890ebb69ca361a51cfce7a43f838bb32e30622fa)
: pool: fix regression in GridFTP OPTS CKSM command
[d30f800](https://github.com/dcache/dcache/commit/d30f8003caaa57188ff2397c8e989bd4f855f262)
: resilience: handle file deletion during scan correctly
[31dbeb0](https://github.com/dcache/dcache/commit/31dbeb013f6a4b322908716e5dbd0fdf3b08d120)
: pool: ceph: ignore file-not-found on remove
[260b555](https://github.com/dcache/dcache/commit/260b555d7182676fdf1f8cc3b0a2d6d6421a324a)
: resilience: add pool operation logging
[c7764a8](https://github.com/dcache/dcache/commit/c7764a8bbcee7f7c991244355c25a5e418550df2)
: resilience: handle storage unit NoSuchElement failure
[29625d7](https://github.com/dcache/dcache/commit/29625d73076462fa773e176788a8929e130b8e17)
: nfs: shutdown callback ScheduledExecutorService on shutdown
[b81786d](https://github.com/dcache/dcache/commit/b81786deec06381ab52b3bbbfc013a7b862e0dd9)
: webdav: adjust header parsing to be case insensitive
[bd02e6d](https://github.com/dcache/dcache/commit/bd02e6debfd461f71eb5820aa36bdb1e1bf78748)
: resilience: handle all cases where no locations for file may be discovered
[c70583e](https://github.com/dcache/dcache/commit/c70583e2082db1bd2ccfb54c74da652ebb33582c)
: resilience: distinguish correctly between file not in repository and file not found
[dce1a67](https://github.com/dcache/dcache/commit/dce1a677092c3fe588ad5d706c77a8da05dc267c)
: resilience: fix bug in formatting and handling of cache exception types
[a070892](https://github.com/dcache/dcache/commit/a070892e037e1053888cd16de594a56ca2237bd9)
: srmclient: remove non-functioning script with BASH dependencies
[aa2ef59](https://github.com/dcache/dcache/commit/aa2ef591485770f85d6643cdea94c709408bad2f)
: ftp: update exception logging to include context
[27d0e67](https://github.com/dcache/dcache/commit/27d0e677383ea8806e125e23cbc5a5ce58c442f5)
: [maven-release-plugin] prepare for next development iteration
## Release 3.1.15
### cells
The current release improved handling of rogue domains with badly formatted dCache versions.
### configuration
There are configuration options in zookeeper that may affect how well
the zookeeper cluster will work with dCache. The lack of documentation
of how dCache uses zookeeper prevents admins from tuning their zookeeper
instance. This is now fixed and zookeeper configuration is updated with
hints on how dCache uses zookeeper, along with the corresponding zookeeper configuration properties.
### pool
The current release fixed loading `setup` that requires queues created by `pool.queues`.
### webdav
The current release fixed the stack-traces on bad client input.
### Changelog 3.1.14..3.1.15
<!-- git log 3.1.14..3.1.15 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n: %s%n' -->
[aa82c54](https://github.com/dcache/dcache/commit/aa82c54ada7f0754786fc16e61edecc87fa15205)
: [maven-release-plugin] prepare release 3.1.15