Ceph Cluster Scheduled deep-scrubbing

Solution Verified - Updated -


  • How to manually schedule a deep-scrub, in order to reduce its impact on client operations?

  • In Ceph versions prior to Firefly (v0.80.8), no tunables were available to reduce the impact of a deep-scrub on client operations, like reducing the I/O priority or the frequency of the deep-scrub. How can the deep-scrub be tuned manually to reduce the impact?

  • How can a deep-scrub on a Ceph cluster be scheduled for a particular day/time? This can be useful to schedule the deep-scrub out of business hours, or at a time when a lesser number of clients are reading/writing from/to the cluster.


  • Ceph Dumpling earlier than 0.67.12

  • Ceph Firefly earlier than 0.80.8

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