[Lustre-discuss] quota persistence over filesystem shutdown

[Guy Coates]

Hi all,

I have run into a problem with the quota system not being re-activated over a
filesystem shutdown.


I initially activated quotas on the lustre filesystem by running:

#quotacheck ug /mnt/data1

and then setting a user quota with:

#lfs -u gmpc 307200 309200 10000 11000 /mnt/data1


quota-ing  works as expected. If I umount and remount the filesystem on the
clients, the quota information and behaviour is preserved.


However, if I un-mount the clients and then restart the MDS/OSTs, the quota
system is not active once the filesystem is remounted on the client:


# lfs quota -u gmpc /mnt/data1
Disk quotas for user gmpc (uid xxxx):
     Filesystem  kbytes   quota   limit   grace   files   quota   limit   grace
quota failed: No such process


If I run:

#lfs quotaon  /mnt/data1

on the client, the quota system is re-activated and everything works as expected.


# lfs quota -u gmpc /mnt/data1
Disk quotas for user gmpc (uid 10795):
     Filesystem  kbytes   quota   limit   grace   files   quota   limit   grace
     /mnt/data1   58308  307200  309200            1302   10000   11000
data1-MDT0000_UUID
                    432       0  102400            1302       0    5000
data1-OST0000_UUID
                   3272       0  102400
data1-OST0001_UUID
                  50500       0  102400
data1-OST0002_UUID
                   2052*      0       1
data1-OST0003_UUID
                   2052*      0       1


I am running lustre 1.6.4.3 / kernel 2.6.18 on debian ia32. The lquota module
has been loaded, and there are no error messages being generated on the
client/ost/mds.

Cheers,

Guy

-- 
Dr. Guy Coates,  Informatics System Group
The Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1HH, UK
Tel: +44 (0)1223 834244 x 6925
Fax: +44 (0)1223 496802


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