Detach a volume when it's under migration, volume status is still "in-use":
1. create vol-1
2. attach vol-1 to a vm
3. migrate vol-1
4. when vol-1 is under migration, detach vol-1
5. after vol-1 is detached, command "cinder list" show that the Status of
vol-1 is still "in-use".
If 'migration_status' of the volume is not None, detach process won't update
the status of the volume to 'available':
volume_ref = _volume_get(context, volume_id, session=session)
if not remain_attachment:
# Hide status update from user if we're performing volume migration
# or uploading it to image
if (not volume_ref['migration_status'] and
not (volume_ref['status'] == 'uploading')):
volume_ref['status'] = 'available'
So how to deal with this? Dose it means that we should not detach a volume when
it's under migration?
Thanks for any input!
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