On Mon, Mar 11, 2019 at 05:21:58PM +0000, Mark Raynsford wrote: > On 2019-03-11T13:08:53 -0400 > Shawn Webb <[email protected]> wrote: > > > > If your guest OS supports it, you could probably write two scripts that > > uses virtio_console(4), one for the guest to tell the host "HELLO" and > > one for the host to say "NICE TO SEE YOU!" once the guest's "HELLO" is > > received. > > > > They're a mix of FreeBSD, OpenBSD, and Debian guests. So I'm guessing > one out of three of those supports it... > > I suppose my other option would be to add (another) NFS mount in each > guest, and have them touch a file early in the init script (and > possibly touch a different file early in the shutdown script).
Both FreeBSD and Linux supports virtio_console(4). I have no idea about OpenBSD, but I'm sure they'd be open to an implementation if asked. The NFS solution would work, but it would be somewhat fragile. What happens when a VM crashes? What happens when the host crashes? Thanks, -- Shawn Webb Cofounder and Security Engineer HardenedBSD Tor-ified Signal: +1 443-546-8752 Tor+XMPP+OTR: [email protected] GPG Key ID: 0x6A84658F52456EEE GPG Key Fingerprint: 2ABA B6BD EF6A F486 BE89 3D9E 6A84 658F 5245 6EEE
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