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https://issues.apache.org/jira/browse/CLOUDSTACK-9738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15828455#comment-15828455
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rashmidixit commented on CLOUDSTACK-9738:
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Github user nvazquez commented on the issue:
https://github.com/apache/cloudstack/pull/1905
Hi @ozhanrk,
In this PR, vm snapshots get deleted when the instance gets deleted from
hypervisor, on task sent by the vm cleanup thread. Can it be possible that you
were referring to volume snapshots instead of vm snapshots for restoring vms?
Thanks
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> Optimize vm expunge process for instances with vm snapshots
> -----------------------------------------------------------
>
> Key: CLOUDSTACK-9738
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9738
> Project: CloudStack
> Issue Type: Improvement
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Affects Versions: 4.10.0.0
> Reporter: Nicolas Vazquez
> Assignee: Nicolas Vazquez
> Fix For: 4.10.0.0
>
>
> h2. Description
> It was noticed that expunging instances with many vm snapshots took a look of
> time, as hypervisor received as many tasks as vm snapshots instance had,
> apart from the delete vm task. We propose a way to optimize this process for
> instances with vm snapshots by sending only one delete task to hypervisor,
> which will delete vm and its snapshots
> h2. Use cases
> # deleteVMsnapohsot-> no changes to current behavior
> # destroyVM with expunge=false -> no actions to VMsnaphsot is performed at
> the moment. When VM cleanup thread is executed it will perform the same
> sequence as #3. If instance is recovered before expunged by the cleanup
> thread it will remain intact with VMSnapshot chain present
> # destroyVM with expunge=true:
> #* Vmsnaphsot is marked with removed timestamp and state = Expunging
> in DB
> #* VM is deleted in HW
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