Re: Resizing pool of pg (.rgw*)

[Wido den Hollander <wido@xxxxxxxx>]

Hi,

On 02/27/2013 12:20 PM, Yann ROBIN wrote:
> 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.

I haven't tried it myself yet, so I can't say  for sure.

To quote Sage in a different thread:

"This functionality is merged, but still a bit experimental.  The
incantation is"

"Please test, but be careful on clusters with real 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
> _______________________________________________
> 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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