Scrub internals and diagnostics

Scrubbing Behavior Table

Flags	none	noscrub	nodeep_scrub	noscrub/nodeep_scrub
Periodic tick	S	X	S	X
Periodic tick after osd_deep_scrub_interval	D	D	S	X
Initiated scrub	S	S	S	S
Initiated scrub after osd_deep_scrub_interval	D	D	S	S
Initiated deep scrub	D	D	D	D

X = Do nothing
S = Do regular scrub
D = Do deep scrub

State variables

Periodic tick state is !must_scrub && !must_deep_scrub && !time_for_deep
Periodic tick after osd_deep_scrub_interval state is !must_scrub && !must_deep_scrub && time_for_deep
Initiated scrub state is must_scrub && !must_deep_scrub && !time_for_deep
Initiated scrub after osd_deep_scrub_interval state is must_scrub && !must_deep_scrub && time_for_deep
Initiated deep scrub state is must_scrub && must_deep_scrub

Scrub Reservations

An OSD daemon command dumps total local and remote reservations:

ceph daemon osd.<id> dump_scrub_reservations

Brought to you by the Ceph Foundation

The Ceph Documentation is a community resource funded and hosted by the non-profit Ceph Foundation. If you would like to support this and our other efforts, please consider joining now.