Scrubbing

When Ceph performs deep scrubbing to check your data for any inconsistencies, it has to read all the objects from the OSD; this can be a very IO-intensive task, and on large drives, the process can take a long time. Scrubbing is vital to protect against data loss and therefore should not be disabled. By tweaking these settings, a lot of the performance impact on client workloads from scrubbing can be avoided.

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