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From "rashmidixit (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-9738) Optimize vm expunge process for instances with vm snapshots
Date Fri, 27 Jan 2017 12:25:24 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15842687#comment-15842687
] 

rashmidixit commented on CLOUDSTACK-9738:
-----------------------------------------

Github user serg38 commented on the issue:

    https://github.com/apache/cloudstack/pull/1905
  
    @rhtyd @karuturi Can we run tests on this PR and merge on success ?


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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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