(resending)

Sounds like a bug. Can you open a ceph tracker issue?

Thanks,
Yehuda

On Mon, Jun 18, 2018 at 7:24 AM, Sander van Schie / True
<sander.vansc...@true.nl> wrote:
> While Ceph was resharding buckets over and over again, the maximum available 
> storage as reported by 'ceph df' also decreased by about 20%, while usage 
> stayed the same, we have yet to find out where the missing storage went. The 
> decreasing stopped once we disabled resharding.
>
> Any help would be greatly appreciated.
>
> Thanks,
>
> Sander
>
> ________________________________________
> From: Sander van Schie / True
> Sent: Friday, June 15, 2018 14:19
> To: ceph-users@lists.ceph.com
> Subject: RGW Dynamic bucket index resharding keeps resharding all buckets
>
> Hello,
>
> We're into some problems with dynamic bucket index resharding. After an 
> upgrade from Ceph 12.2.2 to 12.2.5, which fixed an issue with the resharding 
> when using tenants (which we do), the cluster was busy resharding for 2 days 
> straight, resharding the same buckets over and over again.
>
> After disabling it and re-enabling it a while later, it resharded all buckets 
> again and then kept quiet for a bit. Later on it started resharding buckets 
> over and over again, even buckets which didn't have any data added in the 
> meantime. In the reshard list it always says 'old_num_shards: 1' for every 
> bucket, even though I can confirm with 'bucket stats' there's already the 
> desired amount of shards present. It looks like the background process which 
> scans buckets doesn't properly recognize the amount of shards a bucket 
> currently has. When I manually add a reshard job, it does properly recognize 
> the current amount of shards.
>
> On a sidenote, we had two buckets in the reshard list which were removed a 
> long while ago. We were unable to cancel the reshard job for those buckets. 
> After recreating the users and buckets we were able to remove them from the 
> list though, so they are no longer present. Probably not relevant, but you 
> never know.
>
> Are we missing something, or are we running into a bug?
>
> Thanks,
>
> Sander
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