Hi Alexander,
On Mon, 6 Mar 2023 at 07:30, Alexander Kanavin <alex.kana...@gmail.com> wrote:
>
> Can you please explain the use case? Who would want to enable the
> option, and what could they do when there's a running qemu?
Guest agent communication is useful to retrieve some information about
a running VM.
In my case, I use it to get the IP address of a VM configured using
macvtap which is not able to directly talk to the host over IP.
BR,
Clement
>
> This kind of information needs to go to the commit message, so we can
> document those things for the users.
>
> Alex
>
> On Sun, 5 Mar 2023 at 21:10, Clément Péron <peron.c...@gmail.com> wrote:
> >
> > Add support to the runqemu script for a new option, 'guestagent', that
> > enables the virtio serial port for host-to-guest communication.
> >
> > Signed-off-by: Brenda Streiff <brenda.stre...@ni.com>
> > Signed-off-by: Clément Péron <peron.c...@gmail.com>
> > ---
> > scripts/runqemu | 14 ++++++++++++++
> > 1 file changed, 14 insertions(+)
> >
> > diff --git a/scripts/runqemu b/scripts/runqemu
> > index def11ea911..e71a1e8828 100755
> > --- a/scripts/runqemu
> > +++ b/scripts/runqemu
> > @@ -82,6 +82,7 @@ of the following environment variables (in any order):
> > kvm-vhost - enable KVM with vhost when running x86/x86_64 (VT-capable
> > CPU required)
> > publicvnc - enable a VNC server open to all hosts
> > audio - enable audio
> > + guestagent - enable guest agent communication
> > [*/]ovmf* - OVMF firmware file or base name for booting with UEFI
> > tcpserial=<port> - specify tcp serial port number
> > qemuparams=<xyz> - specify custom parameters to QEMU
> > @@ -216,6 +217,8 @@ class BaseConfig(object):
> > self.cleaned = False
> > # Files to cleanup after run
> > self.cleanup_files = []
> > + self.guest_agent = False
> > + self.guest_agent_sockpath = '/tmp/qga.sock'
> >
> > def acquire_taplock(self, error=True):
> > logger.debug("Acquiring lockfile %s..." % self.taplock)
> > @@ -526,6 +529,10 @@ class BaseConfig(object):
> > elif arg == 'publicvnc':
> > self.publicvnc = True
> > self.qemu_opt_script += ' -vnc :0'
> > + elif arg == 'guestagent':
> > + self.guest_agent = True
> > + elif arg.startswith('guestagent-sockpath='):
> > + self.guest_agent_sockpath = '%s' %
> > arg[len('guestagent-sockpath='):]
> > elif arg.startswith('tcpserial='):
> > self.tcpserial_portnum = '%s' % arg[len('tcpserial='):]
> > elif arg.startswith('qemuparams='):
> > @@ -1366,6 +1373,12 @@ class BaseConfig(object):
> > raise RunQemuError("Failed to boot, QB_SYSTEM_NAME is NULL!")
> > self.qemu_system = qemu_system
> >
> > + def setup_guest_agent(self):
> > + if self.guest_agent == True:
> > + self.qemu_opt += ' -chardev socket,path=' +
> > self.guest_agent_sockpath + ',server,nowait,id=qga0 '
> > + self.qemu_opt += ' -device virtio-serial '
> > + self.qemu_opt += ' -device
> > virtserialport,chardev=qga0,name=org.qemu.guest_agent.0 '
> > +
> > def setup_vga(self):
> > if self.nographic == True:
> > if self.sdl == True:
> > @@ -1496,6 +1509,7 @@ class BaseConfig(object):
> > if self.snapshot:
> > self.qemu_opt += " -snapshot"
> >
> > + self.setup_guest_agent()
> > self.setup_serial()
> > self.setup_vga()
> >
> > --
> > 2.34.1
> >
> >
> >
> >
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