Re: Bad parameter to boot GuixSD in a VM

[Miroslav Rovis]

On 170410-14:50+0200, Ludovic Courtès wrote:
> Hello,
> 
> 良ϖ <address@hidden> skribis:
> 
> > I've followed instructions on this page:
> > https://www.gnu.org/software/guix/manual/html_node/Installing-GuixSD-in-a-VM.html
> >
> > Howeverpoint 3 ("Boot the USB installation image in an VM: ") gets:
> >
> > qemu-system-x86_64: -net default: Invalid parameter 'default'
> 
> This section should read:
> 
>   qemu-system-x86_64 -m 1024 -smp 1 \
>     -net user -net nic,model=virtio -boot menu=on \
>     -drive file=guixsd.img \
>     -drive address@hidden@var{system}
> 
> (It’s a typo in the manual fixed in commit
> d36b8457d04286b4db0543656eed69ae050ac783.)
> 
> > If I remove that parameter I get another error:
> >
> > WARNING: Image format was not specified for
> > 'guixsd-usb-install-0.12.0.x86_64-linux' and probing guessed raw.
> >          Automatically detecting the format is dangerous for raw
> > images, write operations on block 0 will be restricted.
> >          Specify the 'raw' format explicitly to remove the restrictions.
> 
> This is just a warning.
> 
> However, you really need networking support in the VM to install GuixSD.

Trying to understand the above (such as the manual in question
is probably where I'll link to below...), but...

..But I followed the guide to try and run Guix from VM:
https://www.gnu.org/software/guix/manual/html_node/Installing-GuixSD-in-a-VM.html#Installing-GuixSD-in-a-VM

and, this is from yesterday when I did my tentative installing and
running:

$ ls -ltrh guixsd.img
-rw-r--r-- 1 miro miro 193K 2017-04-10 04:45 guixsd.img
$

( created as the page says:
qemu-img create -f qcow2 guixsd.img 5G
)

And this is the script (installed in /usr/local/bin) that I used, and
will try and use again so the question is more complete:

=-=--===-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

#!/bin/sh
exec qemu-system-x86_64 \
                -m 1024 -smp 1 \
                -device virtio-net,netdev=internet \
                -netdev \
                        
bridge,br=br0,id=internet,helper=/usr/libexec/qemu-bridge-helper \
                -boot menu=on \
                -drive file=guixsd.img \
                -drive file=guixsd-usb-install-0.12.0.x86_64-linux \
                -monitor stdio

=-=--===-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

... (let me retry before sending this) ...

So, it goes like this:

$ GuixVM02.sh
WARNING: Image format was not specified for 
'guixsd-usb-install-0.12.0.x86_64-linux' and probing guessed raw.
         Automatically detecting the format is dangerous for raw images, write 
operations on block 0 will be restricted.
         Specify the 'raw' format explicitly to remove the restrictions.
QEMU 2.8.0 monitor - type 'help' for more information
(qemu)

and I press Esc (not F12 like the manual says, or is that changed/corrected
now?, let me see, no it's not, it still says F12, and my Qemu said Esc), and I 
chose 2, like the manual says, and it is booting now...

But it's so slow...

I think I need to add "-enable kvm". That got the VM's of Devuan, Heads,
Refracta, Gentoo very fast.

But, even though, and I'll paste agin from the prompt of the host (the
host is my Gentoo machine):

(qemu) info network
virtio-net-pci.0: 
index=0,type=nic,model=virtio-net-pci,macaddr=52:54:00:12:34:56
 \ internet: index=0,type=tap,helper=/usr/libexec/qemu-bridge-helper,br=br0
(qemu)

[even though] the network is there, I still have, now I have to manually
copy (I mean: by typing):

address@hidden ~# ping www.gnu.org
ping: unknown host
address@hidden ~#

Previously I ran "ip a", nothing really shows... And afterwards I tried:

address@hidden ~# curl https://www.gnu.org
address@hidden ~# links https://www.gnu.org
address@hidden ~# elinks https://www.gnu.org
address@hidden ~# lynx https://www.gnu.org

but none of those seems to be installed.

In short, no network in the Guix guest...

And I was courious, why are you suggesting/recommending (in that manual)
the old:
 -net ...
instead of the new:
 -netdev ...
? The Qemu devs are firm that the new is better, IIUC.

Let me try another script:

=-=--===-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

#!/bin/sh
exec qemu-system-x86_64 \
                -machine type=q35,accel=kvm \
                -enable-kvm \
                -cpu host \
                -device virtio-net,netdev=internet \
                -netdev \
                        
bridge,br=br0,id=internet,helper=/usr/libexec/qemu-bridge-helper \
                -m 4196M \
                -monitor stdio \
                -boot menu=on \
                -drive file=guixsd.img \
                -drive file=guixsd-usb-install-0.12.0.x86_64-linux 

=-=--===-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

Oh, yes! This is maybe 10 times faster!

But, still no network... Hmmmh!

It's similar to the already reported above, regarding the network, basically.

Also the guixsd hasn't changed in the least. Same size, same timestamp.
Untouched by my trials.

Any ideas what to try?

-- 
Miroslav Rovis
Zagreb, Croatia
https://www.CroatiaFidelis.hr

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