[Users] clone vm from snapshot problem in 3.2

[Alissa Bonas]

----- Original Message -----
> From: "Gianluca Cecchi" <gianluca.cecchi at gmail.com>
> To: "Liron Aravot" <laravot at redhat.com>
> Cc: "users" <users at ovirt.org>, "Vered Volansky" <vered at redhat.com>
> Sent: Thursday, February 28, 2013 7:07:55 PM
> Subject: Re: [Users] clone vm from snapshot problem in 3.2
> 
> On Wed, Feb 27, 2013 at 1:21 PM, Liron Aravot  wrote:
> 
> >> Hi Gianluca,
> >> I've built 3.2 and had success in reproducing your issue, I've
> >> also
> >> tested the fix and after it the clone window shows fine - so this
> >> should solve your issue (http://gerrit.ovirt.org/#/c/11254/).
> >>
> >> Thanks, Liron.
> 
> Hello,
> so I rebuilt with the patch.
> I built as in this thread:
> http://lists.ovirt.org/pipermail/users/2013-February/012702.html
> 
> directly on engine server and with engine stopped:
> 
> sudo rpm -Uvh --force $(ls -1|grep -v all)
> 
> with
> $ ls -1|grep -v all
> ovirt-engine-3.2.0-4.fc18.noarch.rpm
> ovirt-engine-backend-3.2.0-4.fc18.noarch.rpm
> ovirt-engine-config-3.2.0-4.fc18.noarch.rpm
> ovirt-engine-dbscripts-3.2.0-4.fc18.noarch.rpm
> ovirt-engine-genericapi-3.2.0-4.fc18.noarch.rpm
> ovirt-engine-notification-service-3.2.0-4.fc18.noarch.rpm
> ovirt-engine-restapi-3.2.0-4.fc18.noarch.rpm
> ovirt-engine-setup-3.2.0-4.fc18.noarch.rpm
> ovirt-engine-tools-common-3.2.0-4.fc18.noarch.rpm
> ovirt-engine-userportal-3.2.0-4.fc18.noarch.rpm
> ovirt-engine-webadmin-portal-3.2.0-4.fc18.noarch.rpm
> 
> and then reboot the engine
> 
> Results:
> 
> OK, for the snapshot details pane. It seem the patch fixes this too.
> Until now I was never able to see snapshot details,
> Instead now I can see disk and nic details. See:
> https://docs.google.com/file/d/0BwoPbcrMv8mvQmlCZTZBYjBadmc/edit?usp=sharing
> 
> 
> OK, if I clone a VM from a snapshot of a running VM (CentOS 5.6)
> I start the clone and no problem at all.
> 
> well done!
> 
> 
> Corner cases and problems
> 
> 1)
> OK, if I clone a powered on VM from a snapshot with two disks and
> here
> you can find clone in action with webadmin gui and iotop on node that
> shows they are cloning in parallel.. well!
> https://docs.google.com/file/d/0BwoPbcrMv8mvZ3lzY0l1MDc5OVE/edit?usp=sharing
> 
> The VM is a slackware 14 32bit with virtio disk that I obtained from
> a
> virt-v2v from CentOS 6.3+Qemu/KVM
> The problem is that the cloned VM recognizes the disks in reversed
> order
> 
> See these images where sl1432 is master slcone is the clone
> 
> disk layout in details pane seems equal with boot disk the one that
> appears as the second, but the master boots ok, the slave no.
> Disks are swapped
> 
> Master VM disk details:
> https://docs.google.com/file/d/0BwoPbcrMv8mvSWNVNFI4bHg4Umc/edit?usp=sharing
> 
> Clone VM disks details:
> https://docs.google.com/file/d/0BwoPbcrMv8mvM1N0bVcyNlFPS1U/edit?usp=sharing
> 
> Page with the two consoles where you can see that vda of master
> becomes vdb of clone and vice-versa:
> https://docs.google.com/file/d/0BwoPbcrMv8mveFpESEs5V1dUTFE/edit?usp=sharing
> 
> Can I swap again in some way? In VMware for example you can see and
> edit SCSI IDs of disks...
> 
> 2)
> KO, if I clone a windows 7 VM from a snapshot (time 17:09) I get this
> on gui
> https://docs.google.com/file/d/0BwoPbcrMv8mvaW9OVW84WVI1dkU/edit?usp=sharing
> 
> You can find the engine.log from server restart (at 17:06) here:
> https://docs.google.com/file/d/0BwoPbcrMv8mvTDQzRTFfbFgxX0E/edit?usp=sharing
> 
> Are there any restrictions?
> The VM was powered off when taking the snapshot and making the clone.

Hi Gianluca,

Regarding the second item you mentioned - failure of the clone vm from snapshot,
the engine log indicates that the  following error occurred  "Volume Group not big enough" - suggesting you might check if you have enough free space.

> Gianluca
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