[lustre-discuss] Lustre 2.8.0 released

[Jones, Peter A]

We are pleased to announce that the Lustre 2.8.0 Release has been declared GA and is available for <https://downloads.hpdd.intel.com/public/lustre/latest-feature-release/> download<https://downloads.hpdd.intel.com/public/lustre/lustre-2.8.0/> <https://downloads.hpdd.intel.com/public/lustre/lustre-2.8.0/> . You can also grab the source from <http://git.whamcloud.com/fs/lustre-release.git/commit/ea79df5af4d9b034e39caa396cefc2a075e572ba> git<http://git.whamcloud.com/fs/lustre-release.git/commit/ea79df5af4d9b034e39caa396cefc2a075e572ba>

This major release includes new features:

Distributed Namespace (DNE) Asynchronous Commit of cross-MDT updates for improved performance. Remote rename and remote hard link functionality. This completes the work funded by OpenSFS to allow the usage of multiple metadata servers (LU-3534<https://jira.hpdd.intel.com/browse/LU-3534>)

LFSCK Phase 4 Performance and efficiency improvements to the online filesystem consistency checker. This completes this OpenSFS-funded work  (LU-6361<https://jira.hpdd.intel.com/browse/LU-6361>)
Red Hat 7.x Server Support  This release offers support for both servers and clients with RHEL 7.2 (LU-5022<https://jira.hpdd.intel.com/browse/LU-5022>)

SE Linux support for Lustre client  Added the capability to enforce SE Linux security policies for Lustre clients. This work was contributed by Atos. (LU-5560<https://jira.hpdd.intel.com/browse/LU-5560>)
Multiple Metadata RPCs  Support of multiple metadata modifications per client (in last_rcvd file) to improve the multi-threaded metadata performance of a single client. This work was contributed by Atos. (LU-5319<https://jira.hpdd.intel.com/browse/LU-5319>)
Fuller details can be found in the 2.8 wiki page<http://wiki.lustre.org/Release_2.8.0> (including the change log<http://wiki.lustre.org/Lustre_2.8.0_Changelog> and test mat<http://wiki.lustre.org/Release_2.8.0#Test_Matrix>rix<http://wiki.lustre.org/Release_2.8.0#Test_Matrix>)
The following are known issues in the Lustre 2.8 Release:

LU-7404<https://jira.hpdd.intel.com/browse/LU-7404> – Running with ZFS 0.6.5 and newer versions can result in client evictions while under load conditions. This is due to an upstream ZFS issue<https://github.com/zfsonlinux/zfs/issues/4210>
LU-7836<https://jira.hpdd.intel.com/browse/LU-7836> – Performing failover with multiple MDTs per MDS can result in excessive memory consumption . It is recommended to deploy with a single MDT per MDS until a fix is in place for this issue
Work is in progress for these issues.

Please log any issues found in 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, reviews or testing.