How to reduce scrub impact in a Red Hat Ceph Storage cluster?

Solution Verified - Updated -

Issue

  • Deep scrubs on a Red Hat Ceph Storage cluster can sometimes have a negative impact on the client I/O. How can it be controlled?
  • Since object scrub is an essential part of the well-being of an RHCS/Ceph cluster, is it possible to run it manually at specific periods?
  • Is it possible to disable object scrub altogether and run it manually?
  • What are some of the methods available to reduce the impact of a deep-scrub in a Red Hat Ceph Storage cluster?

Environment

  • Red Hat Ceph Storage (RHCS)
    • 1.2.3
    • 1.3.x
    • 2.x
    • 3.x

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