Dear everyone, I have several questions regarding CephFS connected to Namespaces, Subvolumes and snapshot Mirroring: *1. How to display/create namespaces used for isolating subvolumes?*     I have created multiple subvolumes with the option --namespace-isolated, so I was expecting to see the namespaces returned from ceph fs subvolume info <volume_name> <subvolume_name>     also returned by rbd namespace ls <cephfs_data_pool> --format=json     But the latter command just returns an empty list. Are the namespaces used for rdb and CephFS different ones? *2. Can CephFS Snapshot mirroring also be applied to subvolumes?*     I tried this, but without success. Is there something to take into account rather than just mirroring the directory, or is it just not possible right now? *3. Can xattr for namespaces and pools also be mirrored?*     Or more specifically, is there a way to preserve the namespace and pool layout of mirrored directories? Thank you for your help! Best regrads, Jonas PS: You could receive this mail twice, sine this email address somehow got removed from the ceph-users list.