[lustre-discuss] Lustre Orphaned Chunks

[Bob Ball]

You'll need to restart the mds/mdt machine before the space will reclaim 
off the OST.

bob

On 10/17/2016 2:32 PM, DeWitt, Chad wrote:
> Hi All.
>
> I am still learning Lustre and I have run into an issue.  I have 
> referred to both the Lustre admin manual and Google, but I've had no 
> luck in finding the answer.  We are using Lustre 2.8.0.
>
> We had an OST fill due to a single large file.  I took the OST offline 
> via the lctl deactivate command to prevent new files from being 
> created on the OST.  While the OST was deactivated, the user deleted 
> the file.  Now it appears the metadata is gone from the MDS (which 
> makes sense), but the data chunks on the OST remain even after I 
> reactivated the OST.
>
> I believe that running lfsck would resolve this issue, but I am not 
> sure if I should run it on the MDS or the OST?  If this is the fix, 
> what options would I need to use?
>
> Thank you in advance,
> Chad
>
>
> ------------------------------------------------------------
>
> Chad DeWitt, CISSP | HPC Storage Administrator
>
> UNC Charlotte *| *ITS – University Research Computing
>
> ------------------------------------------------------------
>
>
>
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