Re: [libvirt-users] Using virsh to load scripts for the guest machine
Anthony Liguori <anthony <at> codemonkey.ws>
2012-08-01 13:48:33 GMT
Eric Blake <eblake <at> redhat.com> writes:
> On 07/30/2012 12:00 PM, Mauricio Tavares wrote:
>> On Mon, Jul 30, 2012 at 1:50 PM, Eric Blake <eblake <at> redhat.com> wrote:
>>> On 07/15/2012 07:52 PM, Mauricio Tavares wrote:
>>>> Right on the top of
>>>> it seems to imply you can load/send scripts to the vm guest using virsh.
>>>> Is that possible? How and what are the limitations? Can you query the vm
>>> What type of scripts are you talking about? You may be thinking more
>>> about the capabilities of what libguestfs provides, for modifying disk
>>> images. In general, virsh itself controls how to start a guest, but not
>>> the additional layers of communication (such as virtio, qemu-ga, or the
>>> libguestfs appliance app) required for a host to command a guest to do
>>> something from within the guest.
>> Basic one would be in case a machine has been paused for a long
>> time. You know as in "hey, you lazy vm! You have been sleeping for two
>> weeks! Now your clock is way off and poor ntp can't sync it back. So,
>> here's current date!"
> That is something that fits better through qemu-ga, but no one has
> implemented it yet (cc'ing qemu-devel in case I'm misrepresenting
> things). Of course, if we did have a qemu-ga command for pushing the
> current time into the guest, then libvirt could usefully expose an API
> to wrap that qemu-ga command.
Could you setup a wiki page on qemu.org with a list of qemu-ga