[lustre-discuss] Lustre 2.7.0 released

Christopher J. Morrone morrone2 at llnl.gov
Fri Mar 13 17:20:10 PDT 2015

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


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


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


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


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


   * 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.


   * 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.


Fuller details can be found in the Changelog:


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

   * 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

Please log any issues found through the issue tracking system


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

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