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Hi, I've got a few VMs in Ceph RBD that are running very slowly - presumably down to a backfill after increasing the pg_num of a big pool. Would RBD caching resolve that issue? If so, how do I enable it? The documentation states that setting "rbd cache = true" in [global] enables it, but doesn't elaborate on whether you need to restart any Ceph processes. Is that literally all that is needed or is there more to it than that? --
Best regards Graeme |
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