Notice

This document is for a development version of Ceph.

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