ceph / ceph/ceph-iscsi-cli

create snapshot of rbd image failed with errno 30

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#71 6 comments 0 reactions 0 assignees View on GitHub
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Python
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Description

When a rbd image is mapped as a LUN, the tcmu-runner will hold the image's exclusive-lock.
If we create a snapshot of this image, it will fail with errno 30 (EROFS: Read-only file system)
Is there any plan or suggestion on how to support rbd snapshot without unbind the LUN, for a reseaon that we may running a VM on this LUN. VM be stopped or crashed is unacceptable when creating snapshot.
#70 is releated to this issue.

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