[lustre-discuss] Setting infinite grace period with soft quotas

Andreas Dilger adilger at whamcloud.com
Thu May 9 11:27:18 PDT 2019

Cameron, could you please file an LU ticket for that so it isn't lost. Thanks. 

Cheers, Andreas

> On May 9, 2019, at 08:55, Harr, Cameron <harr1 at llnl.gov> wrote:
> Thanks Andreas. This is somewhat interesting in that I don't have such a 
> man page on the systems and 'man lfs' doesn't have such a statement. 
> But, certainly, 2^48 sec. would be sufficient! Our workaround was just 
> to use a -t XXXw to specify a large number of weeks (largest granularity 
> I could see) for the grace period, but having a '-1' shortcut would be 
> preferable.
>> On 5/8/19 4:43 PM, Andreas Dilger wrote:
>> I do see in the lfs setquota usage message and lfs-setquota.1 man page:
>>     "The maximum quota grace time is 2^48 - 1 seconds."
>> That's about 9M years, so it should probably be long enough?  It might
>> make sense to map "-1" internally to "(1 << 48) - 1" to make this easier.
>>> On May 8, 2019, at 17:18, Harr, Cameron <harr1 at llnl.gov> wrote:
>>> I had tested first and couldn't find a way to do so, so I was curious if
>>> there was some undocumented way. I'm proceeding with, "No, there's not a
>>> way."
>>>> On 5/6/19 12:52 PM, Andreas Dilger wrote:
>>>>> On Apr 11, 2019, at 11:02, Harr, Cameron <harr1 at llnl.gov> wrote:
>>>>> We're exploring an idea where we keep soft quotas enabled so that users
>>>>> will be notified they're nearing their hard quotas (via in-house
>>>>> scripts), but users don't like that the soft quota becomes a hard block
>>>>> after the grace period. I can understand their rationale as well that
>>>>> they should be able to write up to their hard quota always.
>>>>> Is there a way to set the grace period as unlimited (e.g. lfs setquota
>>>>> -t -1 ...)?
>>>> Judging by the lack of response, I don't think anyone has tried this, but
>>>> it also seems like something that could be tested quite easily?
>>>> Cheers, Andreas
>>>> --
>>>> Andreas Dilger
>>>> Principal Lustre Architect
>>>> Whamcloud
>> Cheers, Andreas
>> --
>> Andreas Dilger
>> Principal Lustre Architect
>> Whamcloud

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