Volume $ID cannot be attached, because one of the volume attachments is not configured as shareable. To attach a volume to more than one instance, all volume attachments must be configured as shareable.
It would be a good idea to catch this and handle it more gracefully (or prevent it to begin with).
Error 409 in
do_volume_attach()
:It would be a good idea to catch this and handle it more gracefully (or prevent it to begin with).