melnik13 edited a comment on issue #3194: Suspending a VM before snapshot 
deletion (see PR #3193)
URL: https://github.com/apache/cloudstack/pull/3194#issuecomment-497667887
 
 
   @ustcweizhou
   > code lgtm, tested ok.
   > can you also add some information as part of this change to inform 
cloudstack/kvm users in api and on ui that vm will be suspended and resumed 
when take or remove a vm snapshot?
   
   Thank you for your comment. Where it would be better to add this information?
   
   I'd also like to mention that nothing will be changed from the point of view 
of a user, because an instance is actually being frozen when the snapshot is 
being deleted. We suspect that the instance isn't being "properly" suspended 
(the instance doesn't react to anything, but `virsh list` is still showing it 
as running) and exactly that causes image corruption.

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