Re: Resizing pool of pg (.rgw*)

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Hi,

What could go wrong with this command ? If something goes wrong, is there any chance of recovery ?
As this is a production cluster, I don't want to test it if there is a chance of losing my cluster an data.

Thanks,

 -- 
Yann ROBIN

-----Original Message-----
From: ceph-users-bounces@xxxxxxxxxxxxxx [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of Wido den Hollander
Sent: mercredi 27 février 2013 12:12
To: ceph-users@xxxxxxxxxxxxxx
Subject: Re:  Resizing pool of pg (.rgw*)

Hi,

On 02/27/2013 12:01 PM, Yann ROBIN wrote:
> Hi,
>
> We have an existing cluster running on 0.56 that has a very low number 
> of pg for the .rgw* pools.
>
> We previously asked on the mailing list how resize this pool, at the 
> time there was no solution, but a ticket was open.
>
> This ticket is http://tracker.ceph.com/issues/2366 . The ticket is 
> closed and should be in the 0.56 version.
>

Indeed, see the changelog: 
http://ceph.com/docs/master/release-notes/?highlight=split#v0-56-bobtail

osd: experimental support for PG "splitting" (pg_num adjustment for existing pools)

> We want to know if this functionality is now available and what are 
> the steps to do it ?
>

$ ceph osd pool set <pool> pg_num <numpgs> --allow-experimental-feature

I think the flag at the end says enough :) This is only for the brave ones.

Testing this very much welcome!

Wido

> Thanks,
>
> --
>
> Yann ROBIN
>
> YouScribe
>
>
>
> _______________________________________________
> ceph-users mailing list
> ceph-users@xxxxxxxxxxxxxx
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>


--
Wido den Hollander
42on B.V.

Phone: +31 (0)20 700 9902
Skype: contact42on
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