On Mar 06, 2009 07:26 -0600, Nirmal Seenu wrote: > While trying to figure out the reason for LVM2 snapshots failing on our > MDT server I found that there are a lot of sparse files on the MDT > volume. The file size as seen from a ls command output on the MDT is > same as the real file size. The tar runs for a few hours at this point > even if try to use the --spare option in the tar command.
All of the files on the MDT are sparse. The data lives on the OSTs. > The total MDT partition usage itself is about 500MB (as reported by df) > and it used to take me less than 10 minutes to create a LVM2 snapshot > and tar it up when I was running the servers using Lustre 1.6.5 with no > quota enabled. > > I recently upgraded my Lustre servers to 1.6.7 and tried to enable quota > on the MDT and OST by doing the following commands: Also, the quota file is a huge sparse file, size proportional to the highest UID in use. Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc. _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
