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On 3/15/2018 7:27 AM, 李杰 wrote:
> It seems that  we  can  only delete the snapshots of the original volume 
> firstly,then delete the original volume if the original volume has 
> snapshots.

Nova won't be deleting the volume snapshots just to delete the volume 
during a rebuild.

If we decide to delete the root volume during rebuild 
(delete_on_termination=True *or* we decide to not consider that flag 
during rebuild), the rebuild operation will likely have to handle the 
scenario that the volume has snapshots and can't be deleted.

Which opens up another question: if we hit that scenario, what should 
the rebuild operation do? Log a warning and just detach the volume but 
not delete it and continue, or fail?

-- 

Thanks,

Matt