In general it is safe and during long running remapping and backfill situations I enable it. You can enable it with: "ceph config set osd osd_scrub_during_recovery true" If you have any problems you think are caused by the change, undo it: Stop scrubs asap: "ceph osd set nodeep-scrub" "ceph osd set noscrub" reinstate the previous value: "ceph config set osd osd_scrub_during_recovery false" Once things stabilize unset the no scrub flags to resume normal scrub operations: "ceph osd unset nodeep-scrub" "ceph osd unset noscrub" Respectfully, *Wes Dillingham* wes@xxxxxxxxxxxxxxxxx LinkedIn <http://www.linkedin.com/in/wesleydillingham> On Sat, Mar 4, 2023 at 3:07 AM Janne Johansson <icepic.dz@xxxxxxxxx> wrote: > Den lör 4 mars 2023 kl 08:08 skrev <xadhoom76@xxxxxxxxx>: > > ceph 16.2.11, > > is safe to enable scrub and deep scrub during backfilling ? > > I have log recovery-backfilling due to a new crushmap , backfilling is > going slow and deep scrub interval as expired so I have many pgs not > deep-scrubbed in time. > > It is safe to have it enabled, scrubs will skip the PGs currently > being backfilled. > It will put some extra load on the cluster, but for most clusters, > scrubs are always on by default. > > -- > May the most significant bit of your life be positive. > _______________________________________________ > 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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