Comment 9 for bug 2004555
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| Dan Smith (danms) wrote Re: [ussuri] Wrong volume attachment - volumes overlapping when connected through iscsi on host | #9 |
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I don't see in the test scenario description that any instances had to be deleted or volumes disconnected for this to happen. Maybe the reporter can confirm with logs if this is the case?
I'm still chasing down the nova calls, but we don't ignore anything in the actual disconnect other than "volume not found". I need to follow that up to where we call cinder to see if we're ignoring a failure.
When you say "nova should call disconnect_volume with force=true if the volume is going to be deleted... I'm not sure what you mean by this. Do you mean if we're disconnecting because of *instance* delete and are sure that we don't want to let a failure hold us up? I would think this would be dangerous because just deleting an instance doesn't mean you don't care about the data in the volume.
It seems to me that if brick *has* the information available to it to avoid connecting a volume to the wrong location, that it's the thing that needs to guard against this. Nova has no knowledge of the things underneath brick, so we don't know that wires are going to get crossed. Obviously if we can do stuff to avoid even getting there, then we should.