Re: Decreasing pg_num

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You might have some clients with older version?

Or need to do: ceph osd require-osd-release ***?

Best,

Feng

Best,

Feng


On Sun, Apr 14, 2019 at 1:31 PM Alfredo Daniel Rezinovsky
<alfrenovsky@xxxxxxxxx> wrote:
>
> autoscale-status reports some of my PG_NUMs are way too big
>
> I have 256 and need 32
>
> POOL               SIZE  TARGET SIZE  RATE  RAW CAPACITY RATIO  TARGET
> RATIO  PG_NUM  NEW PG_NUM  AUTOSCALE
> rbd               1214G                3.0 56490G
> 0.0645                   256          32  warn
>
> If I try to decrease the pg_num I get:
>
> # ceph osd pool set rbd pg_num  32
> Error EPERM: nautilus OSDs are required to decrease pg_num
>
> But all my osds are nautilus
>
> ceph tell osd.* version
> osd.0: {
>      "version": "ceph version 14.2.0
> (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)"
> }
> osd.1: {
>      "version": "ceph version 14.2.0
> (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)"
> }
> osd.2: {
>      "version": "ceph version 14.2.0
> (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)"
> }
> osd.3: {
>      "version": "ceph version 14.2.0
> (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)"
> }
> osd.4: {
>      "version": "ceph version 14.2.0
> (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)"
> }
> osd.5: {
>      "version": "ceph version 14.2.0
> (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)"
> }
> osd.6: {
>      "version": "ceph version 14.2.0
> (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)"
> }
> osd.7: {
>      "version": "ceph version 14.2.0
> (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)"
> }
> osd.8: {
>      "version": "ceph version 14.2.0
> (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)"
> }
> osd.9: {
>      "version": "ceph version 14.2.0
> (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)"
> }
> osd.10: {
>      "version": "ceph version 14.2.0
> (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)"
> }
> osd.11: {
>      "version": "ceph version 14.2.0
> (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)"
> }
>
> Should I let pg_num as they are now or there's a way to reduce them?
>
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