Simple tip, to decode thread stack dumps from Lustre file system, which typically get dumped into /tmp, run: lctl df <input file> <output file> This will leave you with an ascii formatted, human readable stack trace which can be used … Continue reading
Well it’s been another year, and another Lustre User Group meeting. There were many interesting discussions which took place. Though in general I found the most useful session to be after the LUG was completed. The developer meeting, for me … Continue reading
What is Lustre DNE? The Lustre Distributed Namespace (DNE) feature is a new technology developed for the Lustre File system. The feature it self allows for the distribution of file and directory metadata across multiple Lustre Metadata Targets (MDT). With … Continue reading
When installing lustre it is necessary to generate the storage targets, this is completed with mkfs.lustre, normally this happens without issue, however from time to time this isn’t the case. The following issues are ones I’ve seen and solutions are … Continue reading
From the Wikipedia article on Lustre File Systems: Lustre is a type of parallel distributed file system, generally used for large-scale cluster computing. The name Lustre is a portmanteau word derived from Linux and cluster.[3] Lustre file system software is available under the GNU General Public License (version 2 only) and … Continue reading
In Lustre 2 and above, the inode numbers, which on a standard file system represent the static integer ID of a file now appear to be totally insane, being full 64bit integers. [root@coolermaster lustre]# stat x y z File: `x’ … Continue reading
As requested, here is a Lustre 2.4.0 /proc/fs/lustre dump containing various bits of information on my simple single node test system Click here to view
Lustre is a parallel distributed file system which provides high performance capabilities and open licensing, it is often used in supercomputers and extremely large scale hosting facilities (think Netflix via their 3rd party hosts). Generally, most of the worlds largest … Continue reading