[Lustre-discuss] Quota problem

[Balagopal Pillai]

Hi,

         Looks similar to the problem i am having with quotas and Lustre -

https://bugzilla.lustre.org/show_bug.cgi?id=13846

        The actual disk space utilization doesn't match the usage 
reported by lfs.
Its far less than reported usage.

Regards
Balagopal

Wojciech Turek wrote:
> Hi Folks,
>
> My lustre and kernel version: 2.6.9-55.0.9.EL_lustre.1.6.3smp
>
>
> I am experiencing few problems with lustre quotas.
>
> 1)
> When I run: "lfs quotacheck -ug /home" I can see in syslog lots of 
> LustreError messages
> on mds
> Nov 15 13:30:35 mds01.beowulf.cluster kernel: LustreError: 
> 22395:0:(ldlm_lib.c:1629:target_handle_dqacq_callback()) dqacq failed! 
> (rc:-5) 
>
> on oss
> Nov 15 13:30:35 storage07.beowulf.cluster kernel: LustreError: 
> 15905:0:(quota_context.c:482:dqacq_completion()) acquire qunit got 
> error! (rc:-5)
>
> Is there someone who can explain reason for these errors?
>
> 2) 
> I set only hard limit for each user. The limit is 1TB
> When I run lfs quota -u <username> /home I can see that some users 
> have exceeded  their per OST limit even if they total usage if being 
> far from limit. Also per OST limit seems to be not displayed 
> correctly. If I add up per OST limits it will not equal total limit 
> (see below for example)
>
> Disk quotas for user se282 (uid 694):
>      Filesystem  kbytes   quota   limit   grace   files   quota   
> limit   grace
>           /home 36479512       0 1000000000             886       0   
>     0        
> ddn_home-MDT0000_UUID
>                     120       0  102400             886       0       
> 0        
> ddn_home-OST0000_UUID
>                 13217456*      0 11366400        
> ddn_home-OST0001_UUID
>                 9115004*      0 7884800        
> ddn_home-OST0002_UUID
>                 8324440       0 8396800        
> ddn_home-OST0003_UUID
>                 5822492       0 5939200  
> 3) Is the MAX quota hard limit 2TB ?
> I set hard limit per user to 15TB. 
> lfs setquota -u se282 0 15000000000 0 0 /home
> Then I check user quota:
> lfs quota -u se282 /home
>
> Disk quotas for user se282 (uid 694):
>      Filesystem  kbytes   quota   limit   grace   files   quota   
> limit   grace
>           /home 36479512       0 2115098112             886       0   
>     0        
> ddn_home-MDT0000_UUID
>                     120       0  102400             886       0       
> 0        
> ddn_home-OST0000_UUID
>                 13217456       0 13312000        
> ddn_home-OST0001_UUID
>                 9114996       0 9216000        
> ddn_home-OST0002_UUID
>                 8324440       0 8396800        
> ddn_home-OST0003_UUID
>                 5822500       0 5939200        
>
> As you can see hard limit is  2115098112  instead of 15000000000
>
>
> Thanks,
>
> Wojciech Turek
>
>
>
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