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From "Marcus Sorensen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-600) When rebooting KVM local storage VM host, libvirt definitions deleted
Date Thu, 07 Feb 2013 16:23:15 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13573640#comment-13573640
] 

Marcus Sorensen commented on CLOUDSTACK-600:
--------------------------------------------

I wasn't going to mention that immediately since I see there are
'transient' properties for disks as well, and that makes them not save
the changes, reverting to the original backing file on reboot. I
wouldn't want to create a VM in 'transient' state without making sure
I understood if that also applied. The domainCreateXML seems to be the
transient VM mode according to this:

http://wiki.libvirt.org/page/VM_lifecycle#Transient_guest_domains_vs_Persistent_guest_domains

Other than checking that, domainCreateXML sounds like it's the way to
go if it keeps us from remembering the VM outside of cloudstack.

On Thu, Feb 7, 2013 at 8:53 AM, Wido den Hollander (JIRA)

                
> When rebooting KVM local storage VM host, libvirt definitions deleted
> ---------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-600
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-600
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: KVM
>    Affects Versions: pre-4.0.0
>            Reporter: Andrew Bayer
>
> This is definitely the case in 3.0.3, and I don't think the relevant code has been touched
since.
> When you reboot a VM host running KVM local storage VMs, the VMs are deleted from libvirt.
I presume this is due to CloudStack thinking it's migrating them away from the host, but obviously,
given that we're on local storage, it's unable to do that. The result is that the VMs are
not able to be restarted when the host comes back online.

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