::
ceph fs flag set enable_multiple true --yes-i-really-mean-it
- ceph osd pool create recovery <pg-num> replicated <crush-ruleset-name>
+ ceph osd pool create recovery <pg-num> replicated <crush-rule-name>
ceph fs new recovery-fs recovery <data pool> --allow-dangerous-metadata-overlay
cephfs-data-scan init --force-init --filesystem recovery-fs --alternate-pool recovery
ceph fs reset recovery-fs --yes-i-really-mean-it