Everything goes fine except execute "ceph fs new kingcephfs cephfs-king-metadata cephfs-king-data", its shows 1 filesystem is offline 1 filesystem is online with fewer MDS than max_mds. But i see there is one mds services running, please help me to fix the issue, thanks a lot. bash-4.4$ bash-4.4$ ceph fs new kingcephfs cephfs-king-metadata cephfs-king-data new fs with metadata pool 7 and data pool 8 bash-4.4$ bash-4.4$ ceph -s cluster: id: de9af3fe-d3b1-4a4b-bf61-929a990295f6 health: HEALTH_ERR 1 filesystem is offline 1 filesystem is online with fewer MDS than max_mds services: mon: 3 daemons, quorum a,b,c (age 2d) mgr: a(active, since 2d), standbys: b mds: 1/1 daemons up, 1 hot standby osd: 3 osds: 3 up (since 2d), 3 in (since 2d) rgw: 1 daemon active (1 hosts, 1 zones) data: volumes: 2/2 healthy pools: 14 pools, 233 pgs objects: 592 objects, 450 MiB usage: 1.5 GiB used, 208 GiB / 210 GiB avail pgs: 233 active+clean io: client: 921 B/s rd, 1 op/s rd, 0 op/s wr bash-4.4$ bash-4.4$ ceph fs status myfs - 0 clients ==== RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS 0 active myfs-a Reqs: 0 /s 10 13 12 0 0-s standby-replay myfs-b Evts: 0 /s 0 3 2 0 POOL TYPE USED AVAIL myfs-metadata metadata 180k 65.9G myfs-replicated data 0 65.9G kingcephfs - 0 clients ========== POOL TYPE USED AVAIL cephfs-king-metadata metadata 0 65.9G cephfs-king-data data 0 65.9G MDS version: ceph version 17.2.5 (98318ae89f1a893a6ded3a640405cdbb33e08757) quincy (stable) bash-4.4$ bash-4.4$ bash-4.4$ bash-4.4$ bash-4.4$ ceph mds stat myfs:1 kingcephfs:0 {myfs:0=myfs-a=up:active} 1 up:standby-replay bash-4.4$ bash-4.4$ ceph fs ls name: myfs, metadata pool: myfs-metadata, data pools: [myfs-replicated ] name: kingcephfs, metadata pool: cephfs-king-metadata, data pools: [cephfs-king-data ] bash-4.4$