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From "Mike Tutkowski (JIRA)" <>
Subject [jira] [Commented] (CLOUDSTACK-9008) VM Snapshots no longer work with managed storage
Date Fri, 30 Oct 2015 17:59:27 GMT


Mike Tutkowski commented on CLOUDSTACK-9008:

Hi Wei,

Sorry...I should have provided more details. I was tired when my test encountered this issue
and just wanted to record the fact that we have a bug that destroys data.

What I know right now is that when I attempt to restore the VM to a prior state that one of
the VDIs on the SR gets deleted.

For example, you start with one VDI for your root disk. A VM snapshot is taken, which creates
a snapshot VDI. When I restore to the state of the snapshot, one of the VDIs that make up
the root disk is deleted and the only VDI that remains in the SR is the snapshot VDI.

I tried with this non-managed storage (i.e. "normal" storage) and this does not happen (no
data corruption there).

I have time now to start a deeper investigation and will do so.


> VM Snapshots no longer work with managed storage
> ------------------------------------------------
>                 Key: CLOUDSTACK-9008
>                 URL:
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Management Server
>    Affects Versions: 4.6.0
>         Environment: XenServer 6.5
>            Reporter: Mike Tutkowski
>            Assignee: Mike Tutkowski
>            Priority: Blocker
>             Fix For: 4.6.0
> When using managed storage for the root disk of a VM, you cannot revert a VM to a VM
snapshot without encountering a RuntimeException that destroys the state of your disk.

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