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Lustre 2.3 was released in October 2012. This is its support matrix.

Server Support

Client Support

RHEL 6.3,
CentOS 6.3

RHEL 6.3,
CentOS 6.3,
RHEL 5.8,
CentOS 5.8,
SLES 11 SP1

2.6.38

As well as ongoing stability improvements, there are a number of new features in the Lustre 2.3 release.

Feature

Summary

JIRA

Notes

OFD

OFD is a obdfilter replacement using OSD API

LU-911

 

SMP Scalability

Improve SMP performance of shared directory.

LU-56

 

New IO Engine

New IO Engine will support new grant parameter, generate better IO RPC, and if a page has been set for writeback and the covering lock is being cancelled, the priority will be raised on the writeback page.

LU-1030 
Job Stats

Job Stats will collect filesystem operation stats for the jobs running on Lustre

LU-694

 

CRC

Uses kernel APIs to set optimal hash and checksumming algorithms rather than using hardcoded values

LU-1339/LU-1201 
FLOCK

3000 threads takes by 1 non-conflicting locks, after that these 3000 threads takes the lock its right neighbour thread has taken, so 3000-th lock gets deadlocked on the 1st one.

LU-1157

 

DMU-OSDReview the existing LLNL DMU OSD implementation and add support for Access Control Lists (ACLs), recovery, and the metadata overhead estimates required to implement 'grant'LU-1305 
OI ScrubThis Phase I project will have LFSCK rebuild the OI file after MDT file-level backup/restore to make it workable as Lustre-1.6/1.8 series do.LU-957 
Quota AccountingIn 2.3 we introduced space accounting support (per-user and group inode & block usage) with OFD. Also, added accounting support.LU-1182 
Layout LockThis will add a layout lock protecting the file layout which will allow re-striping a file, a layout generation number to follow re-striping, and a reference count number to lov_stripe_md which will improve object management and clarify their use.LU-169 
2.6.38/FC15 ClientThis will have Fedora Jenkins Create Fedora Builders and Fedora Cobbler Installation.LU-506 
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