[CentOS-virt] kvm-qemu: unable to execute QEMU command savevm (monitor missing?)

Wed Oct 5 00:42:06 UTC 2011
Jason Brian Friedrich <mail at friedrich.org.uk>

Hey Trey,

just a quick update. If you add the CR repo for CentOS 6.0 you will
get an updated RPM which solves the problem for me.

 - Jason

On Tue, Oct 4, 2011 at 01:43, Trey Dockendorf <treydock at gmail.com> wrote:
>
>
> On Tue, Sep 27, 2011 at 6:48 AM, Jason Brian Friedrich
> <mail at friedrich.org.uk> wrote:
>>
>> System: CentOS Linux release 6.0 (final)
>> Kernel: 2.6.32-71.23.1.el6.x86_64
>> KVM: QEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2)
>> Libvirt: ibvirtd (libvirt) 0.8.1
>>
>>
>> Hi everyone,
>>
>> I only recently subscribed to this list and hope you can shed some
>> light on the following error. I created a VM on my Centos 6 KVM
>> machine, used a qcow2 image and wanted to create a snapshot via 'virsh
>> snapshot-create' command:
>>
>> //
>> [root at kvmhost ~]# virsh snapshot-create server01
>> error: internal error unable to execute QEMU command 'savevm': The
>> command savevm has not been found
>> \\
>>
>> I googled before the post, found some [0] threads [1], but could not
>> find an answer how to solve the problem. If the kvm-qemu lacks the
>> support of a savevm monitor, how can I add one? Do I need to recompile
>> kvm-qemu with special flags or is simply a RPM package or a module
>> missing?
>>
>> Thanks in advance,
>>
>>  - Jason
>>
>>
>> [0] http://lists.centos.org/pipermail/centos-virt/2011-July/002557.html
>> [1]
>> https://www.redhat.com/archives/libvirt-users/2011-August/msg00011.html
>> _______________________________________________
>> CentOS-virt mailing list
>> CentOS-virt at centos.org
>> http://lists.centos.org/mailman/listinfo/centos-virt
>
> I ran into this too.  Unfortunately I haven't found a solution either, but
> here's an interesting bug report that shows this effects all the way up to
> Fedora 15,  https://bugzilla.redhat.com/show_bug.cgi?id=727709.  The one fix
> mentioned 89241fe0, I've actually patched into the CentOS libvirt RPM, but
> from testing it doesn't seem to be enough. I now can run the snapshot-create
> command without error, but nothing appears to happen. I've tested creating
> files, taking a snapshot, deleting files and reverting and nothing comes
> back or changes. Also the qcow2 images don't change at all during this time
> either. I'm working on applying the other commits mentioned in Comment #4,
> but am running into problems since most of those commits are 0.9.0+ and I'm
> patching CentOS's 0.8.1.
> I'd love to know if anyone actually has snapshots working in CentOS 5 or 6.
> This is kind of a critical feature to the entire virtualization process.
> - Trey
>
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