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Have some 8TB drives I am looking to remove from cluster Long term however would like to make use of Primary Affinity to decrease the reads going to these drives.
I have a replication and erasure code pool, I understand when setting the primary Affinity to 0 no PG’s will have their Primary PG set to another OSD thus all reads will hit this PG.
On an erasure coding pool does it do the same, but still allow other shards of the EC to be placed on the 8TB drives per the crush map rule. Hence only I/O hitting the 8TB drives should be from the EC pool?
,Ashleh
Sent from my iPhone
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