1、使用rbd rm刪除image
> rbd rm ceph-block/csi-vol-00939e28-14f7-11eb-ac08-2a0aff2a8247
2020-10-31T07:34:50.079+0000 7fa2e53dd700 -1 librbd::image::PreRemoveRequest: 0x5563cae15e90 check_image_watchers: image has watchers - not removing
Removing image: 0% complete...failed.
rbd: error: image still has watchers
報出了image still has watchers錯誤
2、檢查watcher image的client
> rbd status ceph-block/csi-vol-0068f225-14f7-11eb-ac08-2a0aff2a8247
Watchers:
watcher=10.244.2.0:0/1036319188 client.974190 cookie=18446462598732840961
可以看到watcher client的IP信息，找到對應ip的應用並停止，可破解此錯誤
3、好吧，沒辦法鎖定ip的應用，那就把watcher ip加入到黑名單
> ceph osd blacklist add 10.244.2.0:0/1036319188
blacklisting 10.244.2.0:0/1036319188 until 2020-10-31T08:47:43.513987+0000 (3600 sec)
4、再刪除image
> rbd rm ceph-block/csi-vol-0068f225-14f7-11eb-ac08-2a0aff2a8247 Removing image: 100% complete...done.
5、把剛才加入的ip退出黑名單
> ceph osd blacklist rm 10.244.2.0:0/1036319188 un-blacklisting 10.244.2.0:0/1036319188
#查看黑名單列表
> ceph osd blacklist ls