Eric Blake <eblake@xxxxxxxxxx> writes: > On 07/30/2012 12:00 PM, Mauricio Tavares wrote: >> On Mon, Jul 30, 2012 at 1:50 PM, Eric Blake <eblake@xxxxxxxxxx> wrote: >>> On 07/15/2012 07:52 PM, Mauricio Tavares wrote: >>>> Right on the top of >>>> http://www.centos.org/docs/5/html/5.2/Virtualization/chap-Virtualization-Managing_guests_with_virsh.html, >>>> 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 >>>> guest? >>> >>> 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 commands that libvirt would like? Adding commands is pretty trivial so if ya'll have a list of things you'd like, they're great quick tasks that we can find folks to work on. Regards, Anthony Liguori > > -- > Eric Blake eblake@xxxxxxxxxx +1-919-301-3266 > Libvirt virtualization library http://libvirt.org _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
