Hi, I have noticed an error when writing to a mapped RBD. Therefore I unmounted the block device. Then I tried to unmap it w/o success: ld2110:~ # rbd unmap /dev/rbd0 rbd: sysfs write failed rbd: unmap failed: (16) Device or resource busy The same block device is mapped on another client and there are no issues: root@ld4257:~# rbd info hdb-backup/ld2110 rbd image 'ld2110': size 7.81TiB in 2048000 objects order 22 (4MiB objects) block_name_prefix: rbd_data.3cda0d6b8b4567 format: 2 features: layering flags: create_timestamp: Fri Feb 15 10:53:50 2019 root@ld4257:~# rados -p hdb-backup listwatchers rbd_data.3cda0d6b8b4567 error listing watchers hdb-backup/rbd_data.3cda0d6b8b4567: (2) No such file or directory root@ld4257:~# rados -p hdb-backup listwatchers rbd_header.3cda0d6b8b4567 watcher=10.76.177.185:0/1144812735 client.21865052 cookie=1 watcher=10.97.206.97:0/4023931980 client.18484780 cookie=18446462598732841027 Question: How can I force to unmap the RBD on client ld2110 (= 10.76.177.185)? THX _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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