On 6/21/06, Gilboa Davara <gilboad@xxxxxxxxx> wrote:
On Tue, 2006-06-20 at 09:19 -0700, list user wrote:
> Gilboa Davara wrote:
> > Hello all,
> >
> > I'm installing Xen on a machine with multiple Gbps NICs that I'm using
> > for driver development.
> > Is there a way to give the guest complete control over a number of these
> > NICs without having the host to route/bridge the traffic to the guest?
>
> Yes.
>
> 1) use "lspci" to determine which PCI slots the network cards occupy
> 2) Hide them from dom0: in dom0's grub.conf add "pciback.hide(xx:yy.z)"
> to the kernel boot parameters. e.g.
> "module /vmlinuz-2.6.16-xen ro root=/dev/vg0/fc4 \
> "pciback.hide=(aa:aa.a)(bb:bb.b)"
> Multiple slots may be hidden by adding additional parentheticized
> slot info. *Don't use quotes* inside the parens.
> 3) give the selected pci slots to the domU by adding a corresponding
> line to its config file: e.g into /etc/xen/vm1 add:
> "pci = ['aa:aa.a','bb:bb.b']"
> Multiple slots are given within the brackets, *separated by commas*,
> *quotes are required* within the brackets.
>
> As of 3.0.2 exported pci slots crash domUs when when trying to
> automagically save/restore domUs using xendomains or the other tools.
> They will require clean boots.
>
> Hope that helps.
>
Hello,
I've added the pciback.hide option but it doesn't seem to work.
[root@gilboa-home-srv gilboa]# cat /etc/grub.conf | grep xen0 -A2
title Fedora Core (2.6.16-1.2133_FC5xen0)
root (hd0,0)
kernel /xen.gz-2.6.16-1.2133_FC5
module /vmlinuz-2.6.16-1.2133_FC5xen0 ro root=/dev/VolMD/LogFC5
rhgb quiet pciback.hide=(01:09.0)
module /initrd-2.6.16-1.2133_FC5xen0.img
title Fedora Core (2.6.16-1.2133_FC5xenU)
root (hd0,0)
[root@gilboa-home-srv gilboa]# dmesg | grep pci
Bootdata ok (command line is ro root=/dev/VolMD/LogFC5 rhgb quiet
pciback.hide=(01:09.0))
Kernel command line: ro root=/dev/VolMD/LogFC5 rhgb quiet
pciback.hide=(01:09.0)
Unknown boot option `pciback.hide=(01:09.0)': ignoring
ACPI: bus type pci registered
PCI: If a device doesn't work, try "pci=routeirq". If it helps, post a
report
pcie_portdrv_probe->Dev[005d:10de] has invalid IRQ. Check vendor BIOS
Allocate Port Service[0000:00:0b.0:pcie00]
pcie_portdrv_probe->Dev[005d:10de] has invalid IRQ. Check vendor BIOS
Allocate Port Service[0000:00:0c.0:pcie00]
pcie_portdrv_probe->Dev[005d:10de] has invalid IRQ. Check vendor BIOS
Allocate Port Service[0000:00:0d.0:pcie00]
pcie_portdrv_probe->Dev[005d:10de] has invalid IRQ. Check vendor BIOS
Allocate Port Service[0000:00:0e.0:pcie00]
What am I missing?
OK. I think I found the problem. Missing configuration in 2133 kernel?
[gilboa@gilboa-home-srv ~]$ cat /boot/config-2.6.16-1.2133_FC5xen0 |
grep XEN | grep PCI
# CONFIG_XEN_PCIDEV_FRONTEND is not set
# CONFIG_XEN_PCIDEV_BACKEND is not set
Gilboa
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