On 10/14/2010 05:00 PM, Anjali Kulkarni wrote:
Can you send me pointers to the qdev documentation? How can I use it? Will
it allow us to scale above the 32 PCI limit?
It's all below. You just have to create a PCI device and mark the
multifunction flag to on and then assign it a PCI address that includes
a function number. Then you can pack 8 virtio PCI devices into a single
slot.
Regards,
Anthony Liguori
Anjali
On 10/14/10 2:57 PM, "Anthony Liguori"<anth...@codemonkey.ws> wrote:
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:
anth...@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.
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