We are pleased to announce that the Lustre 2.5.1 Release has been declared GA and is available for download<http://downloads.whamcloud.com/public/lustre/latest-maintenan... . You can also grab the source from git<http://git.whamcloud.com/?p=fs/lustre-release.git;a=commit;h=741c8... ** IMPORTANT SECURITY UPDATE ** Sites in production on Lustre 2.5.0 are recommended to upgrade to this release immediately in order to receive the fix for LU-4703/4704 unless ACL functionality has been disabled. *** The release highlights are LU-4620<https://jira.hpdd.intel.com/browse/LU-4620> Support for RHEL 6.5 servers and clients LU-4703<https://jira.hpdd.intel.com/browse/LU-4703> / LU-4704<https://jira.hpdd.intel.com/browse/LU-4704>;: setxattr now checks permissions when setting ACL xattrs which prevents unauthorized alteration of ACL rules. LU-4152<https://jira.hpdd.intel.com/browse/LU-4152>;: A correction has been made to remove the risk of MDT threads blocking until external action is performed on a file while re-exporting NFS under rare access patterns Fuller details can be found in the change log<https://wiki.hpdd.intel.com/display/PUB/Changelog+2.5> The following are known issues in the Lustre 2.5.1 Release: LU-4638<https://jira.hpdd.intel.com/browse/LU-4638> : There is a bug in RHEL 6.5 which results in a leak associated with attempting to hardlink files. This is expected to be fixed in an upcoming RHEL 6.5 update. LU-3833<https://jira.hpdd.intel.com/browse/LU-3833> : HSM does not check whether a file is sparse before archiving which could lead to unexpected results LU-4159<https://jira.hpdd.intel.com/browse/LU-4159>;: Lustre 2.4.x clients are unable to access a released file Work is in progress for these issues. Please log any issues found in the issue tracking system<https://jira.hpdd.intel.com/>