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gnu: Remove uses of deprecated Qemu network configuration.

* gnu/build/vm.scm (load-in-linux-vm): Move Qemu network configuration from
ARCH-SPECIFIC-FLAGS to the Qemu command line.  Use the "-nic" option of Qemu
instead of "-device" and "-net".
* gnu/system/vm.scm (common-qemu-options): Do not add a '-net' command.
(virtual-machine-compiler): Use "-nic user,..." instead of "-net".
* doc/guix.texi (Installing Guix in a VM, Invoking guix system, Running Guix
in a VM): Do the same for examples.
Marius Bakke 2 years ago
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@ -46,7 +46,7 @@ Copyright @copyright{} 2017, 2018 Carlo Zancanaro@*
Copyright @copyright{} 2017 Thomas Danckaert@*
Copyright @copyright{} 2017 humanitiesNerd@*
Copyright @copyright{} 2017 Christopher Allan Webber@*
Copyright @copyright{} 2017, 2018 Marius Bakke@*
Copyright @copyright{} 2017, 2018, 2019 Marius Bakke@*
Copyright @copyright{} 2017, 2019 Hartmut Goebel@*
Copyright @copyright{} 2017, 2019 Maxim Cournoyer@*
Copyright @copyright{} 2017, 2018, 2019 Tobias Geerinckx-Rice@*
@ -2472,7 +2472,7 @@ Boot the USB installation image in an VM:
qemu-system-x86_64 -m 1024 -smp 1 -enable-kvm \
-net user -net nic,model=virtio -boot menu=on,order=d \
-nic user,model=virtio-net-pci -boot menu=on,order=d \
-drive file=guix-system.img \
-drive media=cdrom,file=guix-system-install-@value{VERSION}.@var{system}.iso
@end example
@ -26156,7 +26156,7 @@ below, which enables networking and requests 1@tie{}GiB of RAM for the
emulated machine:
$ /gnu/store/@dots{} -m 1024 -net user
$ /gnu/store/@dots{} -m 1024 -smp 2 -net user,model=virtio-net-pci
@end example
The VM shares its store with the host system.
@ -26642,7 +26642,7 @@ vm-image} on x86_64 hardware:
$ qemu-system-x86_64 \
-net user -net nic,model=virtio \
-nic user,model=virtio-net-pci \
-enable-kvm -m 1024 \
-device virtio-blk,drive=myhd \
-drive if=none,file=/tmp/qemu-image,id=myhd
@ -26655,16 +26655,14 @@ Here is what each of these options means:
This specifies the hardware platform to emulate. This should match the
@item -net user
@item -nic user,model=virtio-net-pci
Enable the unprivileged user-mode network stack. The guest OS can
access the host but not vice versa. This is the simplest way to get the
guest OS online.
@item -net nic,model=virtio
You must create a network interface of a given model. If you do not
create a NIC, the boot will fail. Assuming your hardware platform is
guest OS online. @code{model} specifies which network device to emulate:
@code{virtio-net-pci} is a special device made for virtualized operating
systems and recommended for most uses. Assuming your hardware platform is
x86_64, you can get a list of available NIC models by running
@command{qemu-system-x86_64 -net nic,model=help}.
@command{qemu-system-x86_64 -nic model=help}.
@item -enable-kvm
If your system has hardware virtualization extensions, enabling the
@ -26688,11 +26686,11 @@ the ``myhd'' drive.
@end table
The default @command{} script that is returned by an invocation of
@command{guix system vm} does not add a @command{-net user} flag by default.
@command{guix system vm} does not add a @command{-nic user} flag by default.
To get network access from within the vm add the @code{(dhcp-client-service)}
to your system definition and start the VM using
@command{`guix system vm config.scm` -net user}. An important caveat of using
@command{-net user} for networking is that @command{ping} will not work, because
@command{`guix system vm config.scm` -nic user}. An important caveat of using
@command{-nic user} for networking is that @command{ping} will not work, because
it uses the ICMP protocol. You'll have to use a different command to check for
network connectivity, for example @command{guix download}.
@ -26706,7 +26704,7 @@ To enable SSH inside a VM you need to add an SSH server like
22 by default, to the host. You can do this with
`guix system vm config.scm` -net user,hostfwd=tcp::10022-:22
`guix system vm config.scm` -nic user,model=virtio-net-pci,hostfwd=tcp::10022-:22
@end example
To connect to the VM you can run


@ -131,14 +131,7 @@ the #:references-graphs parameter of 'derivation'."
;; The serial port name differs between emulated
;; architectures/machines.
" console="
(if target-arm? "ttyAMA0" "ttyS0"))
;; NIC is not supported on ARM "virt" machine, so use a user mode
;; network stack instead.
,@(if target-arm?
'("-device" "virtio-net-pci,netdev=mynet"
"-netdev" "user,id=mynet")
'("-net" "nic,model=virtio"))))
(if target-arm? "ttyAMA0" "ttyS0"))))
(when make-disk-image?
(format #t "creating ~a image of ~,2f MiB...~%"
@ -163,6 +156,7 @@ the #:references-graphs parameter of 'derivation'."
;; CPU with the maximum possible feature set otherwise.
"-cpu" "max"
"-m" (number->string memory-size)
"-nic" "user,model=virtio-net-pci"
"-object" "rng-random,filename=/dev/urandom,id=guixsd-vm-rng"
"-device" "virtio-rng-pci,rng=guixsd-vm-rng"


@ -927,7 +927,6 @@ with '-virtfs' options for the host file systems listed in SHARED-FS."
"-net nic,model=virtio"
"-object" "rng-random,filename=/dev/urandom,id=guixsd-vm-rng"
"-device" "virtio-rng-pci,rng=guixsd-vm-rng"
@ -1046,8 +1045,8 @@ FORWARDINGS is a list of host-port/guest-port pairs."
(($ <virtual-machine> os qemu graphic? memory-size disk-image-size
(let ((options
`("-net" ,(string-append
`("-nic" ,(string-append
(port-forwardings->qemu-options forwardings)))))
(system-qemu-image/shared-store-script os
#:qemu qemu