On Mon, 2018-06-04 at 10:21 -0700, Samuel Sieb wrote:
> On 06/04/2018 02:40 AM, Patrick O'Callaghan wrote:
> > On Sun, 2018-06-03 at 10:19 -0700, Samuel Sieb wrote:
> > > No, it's a qemu function that saves the currently used VM memory and
> > > state. You do need to have enough free disk space available to be able
> > > to store that. The VM OS doesn't get notified about it, other than
> > > probably noticing that the clock time suddenly jumps unexpectedly.
> >
> > In my case suddenly rebooting the host *is* detected by the guest
> > (running Windows 10). I notice this because on reconnecting to it after
> > a reboot it is always on the login screen, not on the desktop where I
> > left it.
>
> You did say that you were using VFIO, so it won't work anyway.
Indeed.
> But did you enable and start the "libvirt-guests" service?
AFAIK it has always been enabled and running:
systemctl status libvirt-guests
● libvirt-guests.service - Suspend/Resume Running libvirt Guests
Loaded: loaded (/usr/lib/systemd/system/libvirt-guests.service; enabled; vendor preset: disabled)
Active: active (exited) since Mon 2018-06-04 13:22:56 BST; 5h 30min ago
Docs: man:libvirtd(8)
https://libvirt.org
Process: 1375 ExecStart=/usr/libexec/libvirt-guests.sh start (code=exited, status=0/SUCCESS)
Main PID: 1375 (code=exited, status=0/SUCCESS)
Jun 04 13:22:43 bree systemd[1]: Starting Suspend/Resume Running libvirt Guests...
Jun 04 13:22:53 bree libvirt-guests.sh[1375]: Resuming guests on default URI...
Jun 04 13:22:56 bree libvirt-guests.sh[1375]: Resuming guest NewWin10: done
Jun 04 13:22:56 bree systemd[1]: Started Suspend/Resume Running libvirt Guests.
So it tells me the Win10 guest has been resumed. However internally the
guest will presumably have panicked and restarted because the GPU was
reset by the host reboot. (I'm not enough of a Windows user to be able
to tell when it restarted but if anyone knows I can check).
poc
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