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https://issues.apache.org/jira/browse/CLOUDSTACK-600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542595#comment-13542595
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Andrew Bayer commented on CLOUDSTACK-600:
-----------------------------------------
Note - I've seen this happen now when the VM host is off the network and I
reboot it, and when there's a RAID problem on the VM host and cloud-agent isn't
able to communicate with the management server as a result (for some reason).
> 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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