2 days ago I increase it for one pool and trying to reduce for others. Reducing
don't work (for me? - "repair" freezed, but rollung back - up - is good),
increasing is good. I understand next: pgp_num is temporary parameter to change
pg_num. Data actually distributed over pgp_num, but allocated PGs - pg_num. So,
for increasing, first - change pg_num, then wait and change pgp_num.
Da Chun Ng пишет:
> Only pgp_num is listed in the reference. Though pg_num can be changed in the same way, is there any risk to do that?
>
> From: Andreas.Fuchs@xxxxxxxxxxx
> To: dachun.ng@xxxxxxxxxxx; ceph-users@xxxxxxxxxxxxxx
> Subject: RE: Is it possible to change the pg number after adding new osds?
> Date: Mon, 2 Sep 2013 09:02:15 +0000
>
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> You can change the pg numbers on the fly with
>
> ceph osd pool set {pool_name} pg_num {value}
> ceph osd pool set {pool_name} pgp_num {value}
>
> refrence: http://ceph.com/docs/master/rados/operations/pools/
>
>
>
> From: ceph-users-bounces@xxxxxxxxxxxxxx [mailto:ceph-users-bounces@xxxxxxxxxxxxxx]
> On Behalf Of Da Chun Ng
>
> Sent: Montag, 2. September 2013 04:49
>
> To: ceph-users@xxxxxxxxxxxxxx
>
> Subject: Is it possible to change the pg number after adding new osds?
>
>
>
>
> According to the doc, the pg numbers should be enlarged for better read/write balance if the osd number is increased.
>
> But seems the pg number cannot be changed on the fly. It's fixed when the pool is created. Am I right?
>
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> _______________________________________________
> ceph-users mailing list
> ceph-users@xxxxxxxxxxxxxx
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>
--
WBR, Dzianis Kahanovich AKA Denis Kaganovich, http://mahatma.bspu.unibel.by/
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