From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?UTF-8?Q?G=C3=A1bor_Boskovits?= <boskovits@gmail.com>
Subject: Re: "guix system vm" to libvirt XML domain
Date: Thu, 24 Jan 2019 21:01:01 +0100
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To: Giovanni Biscuolo <g@xelera.eu>
Cc: help-guix <help-guix@gnu.org>

Hello,

Giovanni Biscuolo <g@xelera.eu> ezt =C3=ADrta (id=C5=91pont: 2019. jan. 24.=
, Cs, 20:05):
>
> Hi,
>
> reply to myself:
>
> Giovanni Biscuolo <g@xelera.eu> writes:
>
> [...]
>
> > 7. start the VM, connect via SPICE and see the VM does not boot due to
> > an error in procedure mount, falling back to the guile REPL; the backtr=
ace
> > is:
> >
> > --8<---------------cut here---------------start------------->8---
> > In gnu/build/linux-boot.scm:
> >    516:13  2 (_)
> >     367:8  1 (mount-root-file-system "/dev/vda1" "ext4" # _)
> > In unknown file:
> >            0 (mount "/dev/vda1" "/real-root" "ext4" 1 #<undefined>)
> > --8<---------------cut here---------------end--------------->8---
>
> OK I solved this, it was "virsh domxml-from-native" that missed to detect
> the correct disk type of the vda disk, so I changed this part of the XML
> domain definition:
>
> --8<---------------cut here---------------start------------->8---
>     <disk type=3D'file' device=3D'disk'>
>       <driver name=3D'qemu' type=3D'qcow2' cache=3D'writeback' error_poli=
cy=3D'report'/>
>       <source file=3D'/gnu/store/4mz1qqv7h5g5885q1aq0izlmy01knf1g-qemu-im=
age'/>
>       <target dev=3D'vda' bus=3D'virtio'/>
>       <address type=3D'pci' domain=3D'0x0000' bus=3D'0x00' slot=3D'0x03' =
function=3D'0x0'/>
>     </disk>
> --8<---------------cut here---------------end--------------->8---
>
> type=3D'raw' changed to type=3D'qcow2'
>
> but now I've a problem with the /gnu/store mount in guest
>
> "9pnet_virtio: no channels available for device TAGjoptajej2oynju6yvboauz=
7pl6uj"
>
> ...still missimg someting
>
> any hint please?
>

I have seen this once, and the virtio-pci kernel module was missing.
When you run it from guix system
vm, then what bus you have the drive on? It might be easier to
replicate that version, I don't know if it
is virtio, but I guess not.


> Thanks!
>
> --
> Giovanni Biscuolo
>
> Xelera IT Infrastructures

Best regards,
g_bor

p.s.: A nice interface to libvirt would be a very good idea.