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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