Ceph - rbd image cannot be deleted with "rbd: error: image still has watchers"
Issue
Deleting and rbd image fails with the following error:
# rbd rm rbdtest/testimage1
2021-02-25 03:30:32.543 7f9be77fe700 -1 librbd::image::PreRemoveRequest: 0x56251d7efa10 check_image_watchers: image has watchers - 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.
Environment
- Red Hat Ceph Storage (RHCS)
- 4
- 5
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