Hi Götz, You can change the value of osd_max_backfills (for all OSDs or specific ones) using `ceph config`, but you need enable osd_mclock_override_recovery_settings. See https://docs.ceph.com/en/quincy/rados/configuration/mclock-config-ref/#steps-to-modify-mclock-max-backfills-recovery-limits for more information. Best regards, Pierre Riteau On Sat, 27 Apr 2024 at 08:32, Götz Reinicke <goetz.reinicke@xxxxxxxxxxxxxxx> wrote: > Dear ceph community, > > I’ve a ceph cluster which got upgraded from nautilus/pacific/…to reef over > time. Now I added two new nodes to an existing EC pool as I did with the > previous versions of ceph. > > Now I face the fact, that the previous „backfilling tuning“ I’v used by > increasing injectargs --osd-max-backfills=XX --osd-recovery-max-active=YY > dose not work anymore. > > With adjusting thous parameters the backfill was running with up to 2k +- > objects/s. > > As I’m not (yet) familiar with the reef opiont the only speed up so far I > found is „ceph config set osd osd_mclock_profile high_recovery_ops“ which > currently runs the backfill with up to 600 opbjects/s. > > My question: What is a best (simple) way to speed that backfill up ? > > I’v tried to understand the custom profiles (?) but without success - and > did not apply anything other yet. > > Thanks for feedback and suggestions ! Best regards . Götz > > > > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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