On Thu, Mar 17, 2011 at 10:33:03PM +0100, Adam Lackorzynski wrote: > > On Thu Mar 17, 2011 at 13:38:05 -0400, J. Bruce Fields wrote: > > On Thu, Mar 17, 2011 at 02:32:47PM +0100, Adam Lackorzynski wrote: > > > Hello, > > > > > > I'm seeing a problem with quotas in a system where the server running > > > 2.6.38 exports an XFS filesystem via NFS4 to a client. The client kernel > > > version does not seem to play a role, checked with 2.6.38, 2.6.37 and > > > 2.6.36. The following script and output show the problem: > > > > > > #! /bin/sh > > > > > > quota | grep home > > > du > > > cp /bin/ls x1 > > > du > > > cat x1 > /dev/null > > > rm x1 > > > du > > > quota | grep home > > > > > > Output: > > > > > > homes:/home/ 8194720 9072000 9174400 403670 500000 550000 > > > 0 . > > > 96 . > > > 0 . > > > homes:/home/ 8194816 9072000 9174400 403671 500000 550000 > > > > > > > > > As can be seen the 96 kb are still accounted on the quota of the user. > > > Removing the 'cat' command from the script makes the quota be ok again > > > (original value). Also mounting via nfs3 does not exhibit it, same for running > > > the script on the nfs-server directly. > > > > Does "df" show the same problem? > > With '/bin/ls' it does not change at all, so I took a bigger binary > which yields to: > > homes:/home/ 8203780 9072000 9174400 403688 500000 550000 > 0 . > Filesystem 1K-blocks Used Available Use% Mounted on > homes:/home 513671168 335251456 178419712 66% /tmp/xx > 4592 . > Filesystem 1K-blocks Used Available Use% Mounted on > homes:/home 513671168 335256576 178414592 66% /tmp/xx > 0 . > Filesystem 1K-blocks Used Available Use% Mounted on > homes:/home 513671168 335256576 178414592 66% /tmp/xx > homes:/home/ 8208372 9072000 9174400 403689 500000 550000 > > So yes, it seems to be there as well. It might be easier to see with "df -i" (assuming we're leaking an inode). > > And does unmounting/remounting on the > > client clear the problem? > > No. > > > (Or that, in combination with stopping the > > server, unmounting the xfs export, remounting it, and restarting?) > > I rebooted once, got a recovery and then the quotas were ok again (and > supposedly the used blocks as well). I assume a unmount/mount would show > the same behaviour but requires a bit of preparation to try out. > > > Was there an earlier server version that didn't exhibit this problem? > > Had 2.6.37 on the server before and that was fine regarding this. OK, thanks. Sounds like a server bug, but I'm not managing to reproduce it here yet.... --b. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
