Hello all I have cephfs working fine with running ads but still not able to mount, getting error mount error: no mds (Metadata Server) is up Below are details # ceph osd dump | grep min_compat_client require_min_compat_client reef min_compat_client reef # ceph balancer status { "active": true, "last_optimize_duration": "0:00:00.002882", "last_optimize_started": "Tue Jul 15 21:16:41 2025", "mode": "upmap-read", "no_optimization_needed": true, "optimize_result": "Unable to find further optimization, or pool(s) pg_num is decreasing, or distribution is already perfect", "plans": [] } root@van2-host06n:~# dpkg -l ceph-common Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-==============-=============-============-================================================================== ii ceph-common 19.2.2-1jammy amd64 common utilities to mount and interact with a ceph storage cluster root@van2-host06n:~# ceph fs status van2.dev - 0 clients ======== RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS 0 active van2.dev.van2-host06n.wqttsi Reqs: 0 /s 10 13 12 0 1 active van2.dev.van2-host07n.fngvlt Reqs: 0 /s 10 13 11 0 POOL TYPE USED AVAIL cephfs.van2.dev.meta metadata 230k 53.0T cephfs.van2.dev.data data 0 53.0T STANDBY MDS van2-dev.van2-host07n.jnacmh van2-dev.van2-host06n.wpzshe van2-dev.van2-host08n.slrfej MDS version: ceph version 19.2.2 (0eceb0defba60152a8182f7bd87d164b639885b8) squid (stable) SYstemd file. =========== # cat cephfs.mount # # this mounts on /cephfs [Unit] Description=mount /cephfs After=network-online.target Requires=network-online.target [Mount] Where=/cephfs What=10.101.1.246:6789,10.101.1.247:6789,10.101.1.248:6789:/ Type=ceph Options=fs=van2.dev,name=admin,noatime,_netdev,x-systemd.automount [Install] WantedBy=multi-user.target root@van2-host06n:~# journalctl -u cephfs.mount Jul 15 19:31:10 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:32:12 van2-host06n.van2.example.com mount[1809096]: mount error: no mds (Metadata Server) is up. The clu> Jul 15 19:32:12 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=> Jul 15 19:32:12 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:32:12 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:34:59 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:35:59 van2-host06n.van2.example.com mount[1810584]: mount error: no mds (Metadata Server) is up. The clu> Jul 15 19:35:59 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=> Jul 15 19:35:59 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:35:59 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:36:16 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:37:17 van2-host06n.van2.example.com mount[1811498]: mount error: no mds (Metadata Server) is up. The clu> Jul 15 19:37:17 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=> Jul 15 19:37:17 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:37:17 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:49:38 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:50:40 van2-host06n.van2.example.com mount[1817486]: mount error: no mds (Metadata Server) is up. The clu> Jul 15 19:50:40 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=> Jul 15 19:50:40 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:50:40 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:51:58 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=killed, status=> Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'signal'. Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Unit process 1817555 (mount.ceph) remains > Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: Unmounted mount /cephfs. Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Found left-over process 1817555 (mount.cep> Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: This usually indicates unclean termination of a previous> Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:52:59 van2-host06n.van2.example.com mount[1817555]: mount error: no mds (Metadata Server) is up. The clu> lines 1-29...skipping... Jul 15 19:31:10 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:32:12 van2-host06n.van2.example.com mount[1809096]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be> Jul 15 19:32:12 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=32/n/a Jul 15 19:32:12 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:32:12 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:34:59 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:35:59 van2-host06n.van2.example.com mount[1810584]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be> Jul 15 19:35:59 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=32/n/a Jul 15 19:35:59 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:35:59 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:36:16 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:37:17 van2-host06n.van2.example.com mount[1811498]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be> Jul 15 19:37:17 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=32/n/a Jul 15 19:37:17 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:37:17 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:49:38 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:50:40 van2-host06n.van2.example.com mount[1817486]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be> Jul 15 19:50:40 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=32/n/a Jul 15 19:50:40 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:50:40 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:51:58 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=killed, status=15/TERM Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'signal'. Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Unit process 1817555 (mount.ceph) remains running after unit stopped. Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: Unmounted mount /cephfs. Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Found left-over process 1817555 (mount.ceph) in control group while starting uni> Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: This usually indicates unclean termination of a previous run, or service implementation defici> Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:52:59 van2-host06n.van2.example.com mount[1817555]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be> Jul 15 19:53:26 van2-host06n.van2.example.com mount[1817572]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be> Jul 15 19:53:26 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=32/n/a Jul 15 19:53:26 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:53:26 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:56:29 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:57:29 van2-host06n.van2.example.com mount[1817655]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be> Jul 15 19:57:29 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=32/n/a Jul 15 19:57:29 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:57:29 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. lines 1-38...skipping... Jul 15 19:31:10 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:32:12 van2-host06n.van2.example.com mount[1809096]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be authorized Jul 15 19:32:12 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=32/n/a Jul 15 19:32:12 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:32:12 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:34:59 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:35:59 van2-host06n.van2.example.com mount[1810584]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be authorized Jul 15 19:35:59 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=32/n/a Jul 15 19:35:59 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:35:59 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:36:16 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:37:17 van2-host06n.van2.example.com mount[1811498]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be authorized Jul 15 19:37:17 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=32/n/a Jul 15 19:37:17 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:37:17 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:49:38 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:50:40 van2-host06n.van2.example.com mount[1817486]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be authorized Jul 15 19:50:40 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=32/n/a Jul 15 19:50:40 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:50:40 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:51:58 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=killed, status=15/TERM Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'signal'. Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Unit process 1817555 (mount.ceph) remains running after unit stopped. Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: Unmounted mount /cephfs. Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Found left-over process 1817555 (mount.ceph) in control group while starting unit. Ignoring. Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: This usually indicates unclean termination of a previous run, or service implementation deficiencies. Jul 15 19:52:24 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:52:59 van2-host06n.van2.example.com mount[1817555]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be authorized Jul 15 19:53:26 van2-host06n.van2.example.com mount[1817572]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be authorized Jul 15 19:53:26 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=32/n/a Jul 15 19:53:26 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:53:26 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:56:29 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:57:29 van2-host06n.van2.example.com mount[1817655]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be authorized Jul 15 19:57:29 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=32/n/a Jul 15 19:57:29 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:57:29 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 19:58:50 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 19:59:51 van2-host06n.van2.example.com mount[1818287]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be authorized Jul 15 19:59:51 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Mount process exited, code=exited, status=32/n/a Jul 15 19:59:51 van2-host06n.van2.example.com systemd[1]: cephfs.mount: Failed with result 'exit-code'. Jul 15 19:59:51 van2-host06n.van2.example.com systemd[1]: Failed to mount mount /cephfs. Jul 15 20:05:43 van2-host06n.van2.example.com systemd[1]: Mounting mount /cephfs... Jul 15 20:06:44 van2-host06n.van2.example.com mount[1818912]: mount error: no mds (Metadata Server) is up. The cluster might be laggy, or you may not be authorized lines 1-45