[lustre-discuss] Lustre 2.7.0 released

[Christopher J. Morrone]

We are pleased to announce that the Lustre 2.7.0 Release has been 
declared GA and packages are available for download.

   http://downloads.hpdd.intel.com/public/lustre/lustre-2.7.0

The source code is also available directly from the public git repository.

 
http://git.whamcloud.com/fs/lustre-release.git/snapshot/8eb26594344887fabc4b81245abd12b1aeefbccb.tar.gz
   git://git.whamcloud.com/fs/lustre-release.git

This major release includes the following new features:

   * MDT-MDT Consistency Verification (LFSCK Phase 3) - Extends the
     FID-in-direct and linkEA verification from single MDT to
     cross-MDTs cases, and adds some inconsistent check/repair for
     remote object and striped directory. This development is funded by
     OpenSFS.

     https://jira.hpdd.intel.com/browse/LU-4788

   * Dynamic LNET Config - Allows runtime configuration of Lustre
     networks, routes, and routers.

     https://jira.hpdd.intel.com/browse/LU-2456

   * OST Placement - Provides fine-grained control of object placement
     via 'lfs setstripe'. This development originated from Fujitsu.

     https://jira.hpdd.intel.com/browse/LU-4665

   * UID/GID Mapping -This is an IU developed feature that will allow
     mapping certain networks into pre-defined user/group ranges in
     order to avoid potential overlaps within different administrative
     domains.  This is a technology preview that will be fully available
     in a future Lustre release.

     https://jira.hpdd.intel.com/browse/LU-3291

   * DNE Striped Directory preview -While the striped directories are
     available in 2.7, it is not yet possible to do hard links or atomic
     rename() of files across MDTs within a striped directory, which
     will return -EXDEV. This will cause userspace tools like mv and
     rsync to make a copy of the file, but may be unexpected for some
     applications and users.

     https://jira.hpdd.intel.com/browse/LU-3531

Fuller details can be found in the Changelog:

   https://wiki.hpdd.intel.com/display/PUB/Changelog+2.7

The following are known issues in the Lustre 2.7 Release:

   * https://jira.hpdd.intel.com/browse/LU-5939 - HSM agent operations
     might be replayed improperly in case of a server crash due to
     recovery. While producing error messages from HSM client at the
     time, this is safe since the agent will retry once the server is
     back up.

   * https://jira.hpdd.intel.com/browse/LU-6338 - Command lnetctl import
     del may show an error message even when the operation was
     successful.

   * https://jira.hpdd.intel.com/browse/LU-6340 - Sample lnet startup
     script may improperly configure Lustre routers configuration if
     both old and new style config information is present.

NOTE: Users should note that usage of the e2fsprogs-based lfsck has been
deprecated and replaced by "lctl lfsck_start=94. Using older
e2fsprogs-based lfsck may lead to filesystem corruption. Once
available, it is also recommended to use e2fsprogs-1.42.12.wc1 (or
newer).

Please log any issues found through the issue tracking system

   https://jira.hpdd.intel.com

We would like to thank OpenSFS (http://www.opensfs.org) for their
contributions towards the cost of the release and also to all Lustre
community members who have contributed to the release with code and/or
testing.