[ceph-users] cephfs cannot write

Hi all, My ceph cluster is HEALTH_OK, but I cannot write on cephfs. OS: Ubuntu 20.04, ceph version 15.2.5, deploy with cephadm. root@RK01-OSD-A001:~# ceph -s &nbsp; cluster: &nbsp; &nbsp; id:&nbsp; &nbsp; &nbsp;9091b472-1bdb-11eb-b217-abff3468259e &nbsp; &nbsp; health: HEALTH_OK &nbsp; &nbsp; services: &nbsp; &nbsp; mon: 3 daemons, quorum RK01-OSD-A001,RK02-OSD-A002,RK03-OSD-A003 (age 18s) &nbsp; &nbsp; mgr: RK01-OSD-A001.jwrjgj(active, since 51m), standbys: RK03-OSD-A003.tulrii &nbsp; &nbsp; mds: cephfs:1 {0=cephfs.RK02-OSD-A002.lwpgaw=up:active} 1 up:standby &nbsp; &nbsp; osd: 6 osds: 6 up (since 44m), 6 in (since 44m) &nbsp; &nbsp; task status: &nbsp; &nbsp; scrub status: &nbsp; &nbsp; &nbsp; &nbsp; mds.cephfs.RK02-OSD-A002.lwpgaw: idle &nbsp; &nbsp; data: &nbsp; &nbsp; pools:&nbsp; &nbsp;3 pools, 65 pgs &nbsp; &nbsp; objects: 24 objects, 67 KiB &nbsp; &nbsp; usage:&nbsp; &nbsp;6.0 GiB used, 44 TiB / 44 TiB avail &nbsp; &nbsp; pgs:&nbsp; &nbsp; &nbsp;65 active+clean root@RK01-OSD-A001:~# ceph fs status cephfs - 1 clients ====== RANK&nbsp; STATE&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;MDS&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;ACTIVITY&nbsp; &nbsp; &nbsp;DNS&nbsp; &nbsp; INOS&nbsp;&nbsp; &nbsp;0&nbsp; &nbsp; active&nbsp; cephfs.RK02-OSD-A002.lwpgaw&nbsp; Reqs:&nbsp; &nbsp; 0 /s&nbsp; &nbsp; 13&nbsp; &nbsp; &nbsp;15&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;POOL&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;TYPE&nbsp; &nbsp; &nbsp;USED&nbsp; AVAIL&nbsp;&nbsp; cephfs.cephfs.meta&nbsp; metadata&nbsp; 1152k&nbsp; 20.7T&nbsp;&nbsp; cephfs.cephfs.data&nbsp; &nbsp; data&nbsp; &nbsp; &nbsp; &nbsp;0&nbsp; &nbsp;20.7T&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; STANDBY MDS&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; cephfs.RK03-OSD-A003.xchwqj&nbsp;&nbsp; MDS version: ceph version 15.2.5 (2c93eff00150f0cc5f106a559557a58d3d7b6f1f) octopus (stable) root@RK05-FRP-A001:~# df -h|grep "ceph-test" 172.16.65.1,172.16.65.2,172.16.65.3:6789:/&nbsp; &nbsp;21T&nbsp; &nbsp; &nbsp;0&nbsp; &nbsp;21T&nbsp; &nbsp;0% /ceph-test root@RK05-FRP-A001:~# echo 123 &gt; /ceph-test/1.txt -bash: echo: write error: Operation not permitted root@RK05-FRP-A001:~# ls -l /ceph-test/1.txt -rw-r--r-- 1 root root 0 Nov&nbsp; 1 09:40 /ceph-test/1.txt root@RK05-FRP-A001:~# ls -ld /ceph-test/ drwxr-xr-x 2 root root 1 Nov&nbsp; 1 09:40 /ceph-test/ root@RK01-OSD-A001:~# cd /var/log/ceph/`ceph fsid` root@RK01-OSD-A001:/var/log/ceph/9091b472-1bdb-11eb-b217-abff3468259e# cat ceph-volume.log | grep err | grep sdx [2020-11-01 08:53:51,384][ceph_volume.process][INFO&nbsp; ] stderr Failed to find physical volume "/dev/sdx". [2020-11-01 08:53:51,417][ceph_volume.process][INFO&nbsp; ] stderr unable to read label for /dev/sdx: (2) No such file or directory [2020-11-01 08:53:51,445][ceph_volume.process][INFO&nbsp; ] stderr unable to read label for /dev/sdx: (2) No such file or directory root@RK01-OSD-A001:~# pvs|grep sdx &nbsp; /dev/sdx&nbsp; &nbsp;ceph-41b09a52-e44b-43c5-ad86-0eada11b48b6 lvm2 a--&nbsp; <7.28t&nbsp; &nbsp; 0&nbsp; root@RK01-OSD-A001:~# lsblk|grep sdx sdx&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;65:112&nbsp; 0&nbsp; &nbsp;7.3T&nbsp; 0 disk&nbsp; root@RK01-OSD-A001:~# parted -s /dev/sdx print Error: /dev/sdx: unrecognised disk label Model: LSI MR9261-8i (scsi) Disk /dev/sdx: 8001GB Sector size (logical/physical): 512B/4096B Partition Table: unknown Disk Flags:&nbsp; root@RK01-OSD-A001:~#&nbsp;