[lustre-discuss] Odd quota behavior with Lustre/ZFS
Alexander I Kulyavtsev
aik at fnal.gov
Thu Feb 16 15:23:24 PST 2017
Last November I had 'negative' file count reported quota for two groups.
Checking it now the count for one of them got 'positive.' I guess user just wrote more files.
The file count reported by robinhood was 1,634 and 3924 files.
[root at lfsb ~]# lfs quota -qh -g thermog /mnt/lfsa
/mnt/lfsa 0k 0k 0k - 18446744073709550831 0 0 -
[root at lfsb ~]# lfs quota -qh -g c51 /mnt/lfsa
/mnt/lfsa 0k 0k 0k - 18446744073709551611 0 0 -
Right now lfs quota reports same large number of files for group c51:
and [almost] no space used.
# lfs quota -g c51 /mnt/lfsa
Disk quotas for group c51 (gid 9886):
Filesystem kbytes quota limit grace files quota limit grace
/mnt/lfsa 0 1048576 1048576 - 18446744073709551611* 1024 1024 -
I can mount mdt snapshot and take a look but I have to know what to look for.
This is lustre 2.5.3 GA with few patches. zfs-0.6.4.1
From: Mohr Jr, Richard Frank (Rick Mohr) <rmohr at utk.edu>
Sent: Thursday, February 16, 2017 3:02 PM
To: Alexander I Kulyavtsev
Cc: Lustre discussion
Subject: Re: [lustre-discuss] Odd quota behavior with Lustre/ZFS
Were you ever able to get more details about this problem? Thanks.
Senior HPC System Administrator
National Institute for Computational Sciences
> On Feb 9, 2017, at 10:27 PM, Alexander I Kulyavtsev <aik at fnal.gov> wrote:
> Yes, in lustre 2.5.3 after doing chgrp for large subtree. IIRC, for three groups; counts were small different "negative" numbers, not 21.
> I can get more details tomorrow.
>> On Feb 9, 2017, at 5:14 PM, Mohr Jr, Richard Frank (Rick Mohr) <rmohr at utk.edu> wrote:
>> Has anyone else encountered this “off by 21” problem before? I didn’t see anything online, but perhaps I missed something.
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