Re: [Qemu-devel] Hitting 29 NIC limit

[Anthony Liguori <anthony@codemonkey.ws>]

On 10/14/2010 04:42 PM, Richard W.M. Jones wrote:
> On Thu, Oct 14, 2010 at 01:10:47PM +0100, Daniel P. Berrange wrote:
>    
>> Or a PCI bridge to wire up more PCI buses, so we raise the max limit for
>> any type of device we emulate.
>>      
> Break the 29/30/31 virtio-blk limit ... please!
>    

It was broken ages ago:

anthony@howler:~$ wc -l /proc/partitions; tail /proc/partitions
422 /proc/partitions
  251     1618          1 vdcx2
  251     1621     489951 vdcx5
  251     1632   10485760 vdcy
  251     1633    9992398 vdcy1
  251     1634          1 vdcy2
  251     1637     489951 vdcy5
  251     1648   10485760 vdcz
  251     1649    9992398 vdcz1
  251     1650          1 vdcz2
  251     1653     489951 vdcz5

This is what makes qdev so useful.

args=""
for slot in 5 6 7 8 9 10 11 12 13 14 15 16 17; do
for fn in 0 1 2 3 4 5 6 7; do
     args="$args -drive 
file=/home/anthony/images/linux.img,if=none,snapshot=on,id=disk${slot}_${fn}"
     args="$args -device 
virtio-blk-pci,addr=${slot}.${fn},drive=disk${slot}_${fn},multifunction=on"
done
done

x86_64-softmmu/qemu-system-x86_64 -hda ~/images/linux.img ${args} 
-enable-kvm -serial stdio

Regards,

Anthony Liguori

> Rich.
>
>