記錄ceph兩個(gè)rbd刪除不了的處理過(guò)程

在一個(gè)使用的環(huán)境發(fā)現(xiàn)兩個(gè)ceph的rbd刪除不了，發(fā)現(xiàn)兩個(gè)rbd都是由于殘留了watch的信息。在此記錄處理過(guò)程。

處理方法

[root@node-2 ~]# 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.

查看rbd 殘留的watch信息

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

將該殘留的watch信息添加到osd的黑名單，再查看watch是否存在。

[root@node-2 ~]# 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)

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

刪除rbd

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