Yep, just change the CRUSH rule:
ceph osd pool set my_cephfs_metadata_pool crush_rule replicated_nvme
If you have a rule set called replicated_nvme, that'll set it on the
pool named my_cephfs_metadata_pool.
Of course this will cause a significant data movement.
If you need to add the rule, and want it to use host as a failure
domain:
ceph osd crush rule create-replicated replicated_nvme default host
nvme
On 2022-02-18 15:26, Vladimir Brik wrote:
Hello
Is it possible to change which device class a replicated pool is using?
For example, if my cephfs metadata pool was configured on creation to
use ssd device class, can I later change it to use nvme device class?
Thanks,
Vlad
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