Tiered pools should be able to do this for you.
It has been dis-encouraged as a performance gain (ie, the reverse when you
have spin drives and want to put a ssd pool in front of it to get ssd perf
but hdd price/storage) in some cases, but if you do it for migrations it
should probably be worth it, given that a slight perf hit on the backend
drives would be acceptable to be able to save money compared to all-ssd
pools I guess.
https://docs.ceph.com/docs/nautilus/rados/operations/cache-tiering/
Den ons 20 maj 2020 kl 11:12 skrev Khodayar Doustar <doustar(a)rayanexon.ir>ir>:
Anyone knows anything about this?
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