[lustre-discuss] lfsck repair quota

[Fernando Perez]

Dear Martin.

I tried to run the e2fsck in the mdt three years ago and the logs shows 
a lot of this kind of messages:

> Unattached inode 26977505
> Connect to /lost+found? yes
> Inode 26977505 ref count is 2, should be 1. Fix? yes

In fact I think that the e2fsc ran so slow due that all the mdt inodes 
were corrected.

Regards.

=============================================
Fernando Pérez
Institut de Ciències del Mar (CSIC)
Departament Oceanografía Física i Tecnològica
Passeig Marítim de la Barceloneta,37-49
08003 Barcelona
Phone:  (+34) 93 230 96 35
=============================================

On 4/16/19 8:43 PM, Martin Hecht wrote:
> Are there a lot of inodes moved to lost+found by the fsck, which contribute to the occupied quota now?
>
> ----- Ursprüngliche Mail -----
> Von: Fernando Pérez <fperez at icm.csic.es>
> An: lustre-discuss at lists.lustre.org
> Gesendet: Tue, 16 Apr 2019 16:24:13 +0200 (CEST)
> Betreff: Re: [lustre-discuss] lfsck repair quota
>
> Thank you Rick.
>
> I followed these steps for the ldiskfs OSTs and MDT, but the quotes for all users is more corrupted than before.
>
> I tried to run e2fsck in ldiskfs OSTs MDT, but the problem was the MDT e2fsck ran very slow ( 10 inodes per second for more than 100 million inodes).
>
> According to the lustre wiki I though that the lfsck could repair corrupted quotes:
>
> http://wiki.lustre.org/Lustre_Quota_Troubleshooting
>
> Regards.
>
> ============================================
> Fernando Pérez
> Institut de Ciències del Mar (CSIC)
> Departament Oceanografía Física i Tecnològica
> Passeig Marítim de la Barceloneta,37-49
> 08003 Barcelona
> Phone:  (+34) 93 230 96 35
> ============================================
>
>> El 16 abr 2019, a las 15:34, Mohr Jr, Richard Frank (Rick Mohr) <rmohr at utk.edu> escribió:
>>
>>
>>> On Apr 15, 2019, at 10:54 AM, Fernando Perez <fperez at icm.csic.es> wrote:
>>>
>>> Could anyone confirm me that the correct way to repair wrong quotes in a ldiskfs mdt is lctl lfsck_start -t layout -A?
>> As far as I know, lfsck doesn’t repair quota info. It only fixes internal consistency within Lustre.
>>
>> Whenever I have had to repair quotas, I just follow the procedure you did (unmount everything, run “tune2fs -O ^quota <dev>”, run “tune2fs -O quota <dev>”, and then remount).  But all my systems used ldiskfs, so I don’t know if the ZFS OSTs introduce any sort of complication.  (Actually, I am not even sure if/how you can regenerate quota info for ZFS.)
>>
>> --
>> Rick Mohr
>> Senior HPC System Administrator
>> National Institute for Computational Sciences
>> http://www.nics.tennessee.edu
>>