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
Just a reminder, if you’ve got an SSD and any modern Linux distribution fstrim is your friend. I suggest running it as a simple cron job.
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
So after a few months of being carefully packed up (and turned off), I finally had enough free time to unpack my office again and get things going. To my surprise the keyboard wasn’t working correctly. Even though it was … Continue reading
Below is the README file for mdtest, an application designed to test meta data performance of a given file system /******************************************************************************\ * * * Copyright (c) 2003, The Regents of the University of California * * See the file COPYRIGHT … Continue reading
So while playing around with one of the local ski resorts website I decided, hey wouldn’t it be neat to time lapse the whole day by grabbing a frame a second from the public web cam. After collected my images … Continue reading
Um.. well brain dead moment tonight after putting in huge hours last week. echo `expr 2 * 2` expr: syntax error Of course… forgot to escape * 🙂 echo `expr 2 \* 2` 4 Sigh!
So once again I had to go googling the man page to find this so I’m posting it here. convert animated.gif -scene 1 +adjoin frame_%03d.gif
IOR is a file system testing tool designed to work in a clustered environment. Below is the usage instructions /*****************************************************************************\ * * * Copyright (c) 2003, The Regents of the University of California * * See the file COPYRIGHT for … Continue reading