Cache Pool PG Split

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Hi All,

When trying to increase the number of PG's of a cache pool I get the warning
message about running a scrub afterwards and being careful about not
overfilling the pool. I've also looked at this issue to better understand
the underlying cause: http://tracker.ceph.com/issues/8043

Am I best to lower the target_max_bytes and minimising IO prior to doing the
PG split to avoid filling the pool? Is there anything else I should be aware
of?

Many Thanks,
Nick




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