I read about the "warm" option and we are already discussing this. I don't know if the pgs needs a tuning. I don't know what the impact is and if there will be any difference if we enable it. The, meanwhile gone, last ceph admin made a ticket, and I am not particularly familiar with ceph. So I need to work on this ticket and I try not to trash our ceph storage :-) Am Di., 16. Juni 2020 um 11:39 Uhr schrieb Dan van der Ster <dan@xxxxxxxxxxxxxx>: > > Hi, > > I agree with "someone" -- it's not a good idea to just naively enable > pg_autoscaler on an existing cluster with lots of data and active > customers. > > If you're curious about this feature, it would be harmless to start > out by enabling it with pg_autoscale_mode = warn on each pool. > This way you can see what the autoscaler would do if it were set to > *on*. Then you can tweak all the target_size_ratio or > target_size_bytes accordingly. > > BTW, do you have some feeling that your 17000 PGs are currently not > correctly proportioned for your cluster? > > -- Dan > > On Tue, Jun 16, 2020 at 11:31 AM Boris Behrens <bb@xxxxxxxxx> wrote: > > > > Hi, > > > > I would like to enable the pg_autoscaler on our nautilus cluster. > > Someone told me that I should be really really careful to NOT have > > customer impact. > > > > Maybe someone can share some experience on this? > > > > The Cluster got 455 OSDs on 19 hosts with ~17000 PGs and ~1petabyte > > raw storage where ~600TB raw is used. > > _______________________________________________ > > ceph-users mailing list -- ceph-users@xxxxxxx > > To unsubscribe send an email to ceph-users-leave@xxxxxxx -- Die Selbsthilfegruppe "UTF-8-Probleme" trifft sich diesmal abweichend im groüen Saal. _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
 |