Date: Mon, 11 Mar 2019 11:09:07 -0700 (PDT) From: "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net> To: Shawn Webb <shawn.webb@hardenedbsd.org> Cc: "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net>, Mark Raynsford <list+org.freebsd.virtualization@io7m.com>, freebsd-virtualization@freebsd.org Subject: Re: bhyve: Detecting that a guest kernel has booted Message-ID: <201903111809.x2BI974C010768@ gndrsh.dnsmgr.net> In-Reply-To: <20190311180359.knal2sjbmxlgzduh@mutt-hbsd>
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> On Mon, Mar 11, 2019 at 10:58:55AM -0700, Rodney W. Grimes wrote: > > -- Start of PGP signed section. > > > On 2019-03-11T13:08:53 -0400 > > > Shawn Webb <shawn.webb@hardenedbsd.org> 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). > > > > Well ICMP is in the kernel, and should be working as soon as the > > interface is up, long before you could do anything with NFS, > > so rather than the complexity above a simple ping would suffice. > > Just a note: Windows systems disable inbound ICMP by default, but > inbound ICMP support can be enabled post-installation. > > > There is also the phase of vmm(8) startup that when you are > > running bhyveload vs bhyve and iirc grubload vs bhyve, that > > can be detected. vmbhyve does so and says you are in state > > looader when you do a vm list. > > I would suggest using bhyve with UEFI. I wish a death upon bhyveload > and grub2-bhyve. I have no love for them either, but until we get our UEFI updated it is a rather sad state of affairs. If we could a) get on a modern version of ed2k, and b) bet the CSM fixed so that we could actually boot bios mode stuff with it and c) maybe make a port of seabios that could be used then we would be kicking some seriuos stuff! > Thanks, > Shawn Webb -- Rod Grimes rgrimes@freebsd.org
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