Record the processing process of CEPH two RBDS that cannot be deleted

Find two in a working environment ceph Of rbd It can't be deleted , Found two rbd It's all due to residues watch Information about . Record the process here .

processing method

[[email protected] ~]# rbd rm compute/2d05517a-8670-4cce-b39d-709e055381d6_disk 2018-06-11 13:19:14.787750 7fd05853bd80 -1 librbd: cannot obtain exclusive lock - not removing Removing image: 0% complete...failed. rbd: error: image still has watchers This means the image is still open or the client using it crashed. Try again after closing/unmapping it or waiting 30s for the crashed client to timeout.

see rbd Residual watch Information

[[email protected] ~]# rbd status compute/2d05517a-8670-4cce-b39d-709e055381d6_disk Watchers:     watcher=192.168.55.2:0/2900899764 client.14844 cookie=139644428642944

The residual watch Information added to osd The blacklist of , Check it again watch Whether there is .

[[email protected] ~]# ceph osd blacklist add 192.168.55.2:0/2900899764 blacklisting 192.168.55.2:0/2900899764 until 2018-06-11 14:25:31.027420 (3600 sec)

[[email protected] ~]# rbd status compute/2d05517a-8670-4cce-b39d-709e055381d6_disk Watchers: none

Delete rbd

[[email protected] ~]# rbd rm compute/2d05517a-8670-4cce-b39d-709e055381d6_disk Removing image: 100% complete...done.