Ceph - stalls caused by scrub on Red Hat Ceph Storage 2(jewel).

Solution Verified - Updated -

Issue

  • Ceph - stalls caused by scrub on Red Hat Ceph Storage 2(jewel).
  • Ceph filestore can get stuck in an unbounded loop during scrub
  • Some of Scrub and deep-scrub threads are taking very long time to finish.
  • Slow requests when only light scrub is running.
  • Some OSDs are hitting suicide timeout when only light scrub is running.

Environment

  • Red Hat Ceph Storage 2
  • Red Hat Ceph Storage 2.1
  • Upstream Jewel 10.2.3

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