[libvirt] [PATCH 0/4] Add support for QEMU guest agent control

[MATSUDA, Daiki]

(2011/10/06 2:31), Daniel P. Berrange wrote:
> The QEMU guest agent "/usr/bin/qemu-ga" has some handy functions
> for controlling the guest, not least, shutdown/reboot and filesystem
> freeze/thaw.
>
> In Fedora 15/16 the semantics of the ACPI power button have been
> changed to suspend-to-RAM which breaks our current shutdown
> implementation.
>
> By adding support for the agent we gain a more predictable way
> to shutdown / reboot guests.
>
> NB: the code currently has the same "flaw" as the monitor, in
> so much as we wait forever for a guest agent reply. We need to
> add a timeout ability to the agent code
>
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>
>

The QEMU guest agent has other function FS Freeze. But your patches does 
not support it. Do you have a plan ?

In addition, the QEMU guest agent requires specified socket. Virt IO 
Console, too. But unfortunately libvirt does not support to xml tags to 
give socket name options to QEMU for the QEMU guest agent and Virt IO 
Console.

MATSUDA Daiki