[libvirt-users] VM not booting with physical hardware attached

[Pierre Schweitzer]

Dear all,

To answer myself, it appears to be a bug in the seabios shipped with Ubuntu.
You can find the bug report here:
https://bugs.launchpad.net/ubuntu/+source/seabios/+bug/1181777

TL;DR: the workaround is to use <rom bar='off'/> in the <hostdev ...>
section.
Tested with success here (not tested yet whether the network card
properly works yet though).

With my best regards,

On 07/29/2014 03:16 PM, Pierre Schweitzer wrote:
> Dear all,
>
> I'm looking for a bit of help with a problematic VM. We have an
> hypervisor which has 4 eth ports. 3 are already used, and I wanted to
> pass the 4th one directly to a VM (which is fully working without it).
>
> So, I modified the XML accordingly (which matches our hardware), adding:
>     <hostdev mode='subsystem' type='pci' managed='yes'>
>       <source>
>         <address domain='0x0000' bus='0x03' slot='0x00' function='0x3'/>
>       </source>
>     </hostdev>
>
> I also activated Intel IOMMU in Linux (and rebooted). Then, I issued a
> virsh start <domain>.
>
> libvirt is able to fire the VM, but then the OS inside doesn't boot at
> all. I tried to go deeper into debugging and it seems that the VM cannot
> pass SeaBIOS anymore. It gets stuck in seabios, it seems. No "Booting"
> sentence displayed, only version of SeaBIOS, when I watch VNC ouput.
> I tried to use <bios useserial='yes'/> with a console to the VM. Nothing
> is displayed on the console.
>
> Here are the specs of the machine:
> -> Ubuntu 12.04LTS up to date
> -> libvirt 0.9.8-2ubuntu17.19
> -> kvm 1.0+noroms-0ubuntu14.15
> -> seabios 0.6.2-0ubuntu2.1
>
> The ethernet card I try to attach is:
> Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe
> Its PCI ID being: 14e4:1657
>
> What are the possibilities to debug this issue? What are the
> possibilities to fix it as well?
> Thanks to everyone helping!
>
> With my best regards,
>
>
>
> _______________________________________________
> libvirt-users mailing list
> libvirt-users at redhat.com
> https://www.redhat.com/mailman/listinfo/libvirt-users


-- 
Pierre Schweitzer <pierre at reactos.org>
System & Network Administrator
Senior Kernel Developer
ReactOS Deutschland e.V.

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