Ceph rbd删除image遭遇watchers异常处理

1、使用rbd rm删除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

报出了image still has watchers错误

2、检查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，找到对应ip的应用并停止，可破解此错误

3、好吧，没办法锁定ip的应用，那就把watcher ip加入到黑名单

> 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、再删除image

> rbd rm ceph-block/csi-vol-0068f225-14f7-11eb-ac08-2a0aff2a8247
Removing image: 100% complete...done.

5、把刚才加入的ip退出黑名单

> ceph osd blacklist rm 10.244.2.0:0/1036319188
un-blacklisting 10.244.2.0:0/1036319188

#查看黑名单列表

> ceph osd blacklist ls