Ceph: How to reduce scrub impact in a Red Hat Ceph Storage cluster
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) 2.x
- Red Hat Ceph Storage (RHCS) 3.x
- Red Hat Ceph Storage (RHCS) 4.x
- Red Hat Ceph Storage (RHCS) 5.x
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