[Lustre-discuss] Adding OST to online Lustre with quota

[Fan Yong]

On 7/7/10 10:48 PM, Andreas Dilger wrote:
> On 2010-07-06, at 10:10, Fan Yong wrote:
>    
>> On 7/5/10 4:21 PM, Gizo Nanava wrote:
>>      
>>>        we wounder whether  is it possible to add OSTs to the Lustre with
>>> quota support without making  it offline?
>>> We tried to do this but all quota information was lost. Despite the fact
>>> that OST was formatted with quota support
>>> we are receiving this error message:
>>>
>>> Lustre: 3743:0:(lproc_quota.c:447:lprocfs_quota_wr_type())
>>> lustrefs-OST0016: quotaon failed because quota files don't exist, please
>>> run quotacheck firstly
>>>
>>> The message suggest to run the quotacheck command again, but maybe there
>>> is a faster solution.
>>>
>>>        
>> Quotacheck is the normal process, but it maybe some slowly.
>>
>> The basic idea is to generate lquota_v2.user / lquota_v2.group without
>> quotacheck on target Lustre system, there are other similar ways for that.
>>      
> To be honest, I don't think this is a desirable solution.  It should be possible to automatically create these quota files the first time that a new OST is mounted, since we know at that point that the filesystem is empty and there will be no quota usage for any user on the OST.
>    
Right, that is the expected solution, but it is not supported yet.  The 
above is just a hack based on existing mechanism.


Regards,
--
Fan Yong
> Cheers, Andreas
> --
> Andreas Dilger
> Lustre Technical Lead
> Oracle Corporation Canada Inc.
>
>    


-- 
Fan Yong
Lustre Group