Ceph » CephFS

1. Create Subvolume
2. Set the case_insensitive as "true" and "normalization" to "nfkc"
[root@ceph-mani-ibmcl-1-jfm78i-node11 ~]# ceph fs subvolume info mani-fs-1 mani-sv-nd-2 {
"atime": "2025-04-08 07:53:45",
"bytes_pcent": "0.00",
"bytes_quota": 1024000000,
"bytes_used": 0,
"case_insensitive": true, <<<<<<<<<<<<<<<<<<<<<<<<<<
"created_at": "2025-04-08 07:53:45",
"ctime": "2025-04-09 09:24:34",
"data_pool": "cephfs.mani-fs-1.data",
"earmark": "",
"features": [
"snapshot-clone",
"snapshot-autoprotect",
"snapshot-retention"
],
"flavor": 2,
"gid": 0,
"mode": 16877,
"mon_addrs": [
"10.0.64.230:6789",
"10.0.64.222:6789",
"10.0.67.170:6789"
],
"mtime": "2025-04-09 09:15:31",
"normalization": "nfkc",
"path": "/volumes/_nogroup/mani-sv-nd-2/7f4554b3-3cb4-4a36-ae78-8cde5bc04482",
"pool_namespace": "",
"state": "complete",
"type": "subvolume",
"uid": 0
}
[root@ceph-mani-ibmcl-1-jfm78i-node11 ~]# ceph fs subvolume charmap get mani-fs-1 mani-sv-nd-2 {"casesensitive":false,"normalization":"nfkc","encoding":"utf8"}

3. Create a subvolume snapshot
[root@ceph-mani-ibmcl-1-jfm78i-node11 ~]# ceph fs subvolume snapshot create mani-fs-1 mani-sv-nd-2 snap-1

4. Clone the snapshot
[root@ceph-mani-ibmcl-1-jfm78i-node11 ~]# ceph fs subvolume snapshot clone mani-fs-1 mani-sv-nd-2 snap-1 clone-1

5. Get the info of the clone-1 subvolume
[root@ceph-mani-ibmcl-1-jfm78i-node11 ~]# ceph fs subvolume info mani-fs-1 clone-1 {
"atime": "2025-04-08 07:53:45",
"bytes_pcent": "0.00",
"bytes_quota": 1024000000,
"bytes_used": 0,
"case_insensitive": false, <<<<<<<<<<<<<<<<<<<<<<<<<<
"created_at": "2025-04-09 13:46:03",
"ctime": "2025-04-09 13:46:07",
"data_pool": "cephfs.mani-fs-1.data",
"earmark": "",
"features": [
"snapshot-clone",
"snapshot-autoprotect",
"snapshot-retention"
],
"flavor": 2,
"gid": 0,
"mode": 16877,
"mon_addrs": [
"10.0.64.230:6789",
"10.0.64.222:6789",
"10.0.67.170:6789"
],
"mtime": "2025-04-09 09:15:31",
"normalization": "nfkc",
"path": "/volumes/_nogroup/clone-1/421c45f2-21e1-4fb8-ab68-55342480b7ad",
"pool_namespace": "",
"state": "complete",
"type": "clone",
"uid": 0
}
[root@ceph-mani-ibmcl-1-jfm78i-node11 ~]# ceph fs subvolume charmap get mani-fs-1 clone-1 {"casesensitive":true,"normalization":"nfkc","encoding":"utf8"}