Eugon, Thank you, however I'm am still lost. I can create a subvolume group, that I understand. The issue is '/volume/<group>' isn't a real directory on the host, it's a 'virtual directory' in cephfs. '/mnt/tank/database' is a real folder structure on the host. I can't `mv /mnt/tank/database /volume/<group>` Re-reading the thread, is the answer basically: 1) Create group and subvolume 2) mount the subvolume onto the host and then move the data? Or is there a more direct way to convert '/mnt/tank/database' to '/volume/<group>/database' Thx! Jie _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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