[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
* 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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