On Sat, Jun 07, 2014 at 02:44:54AM +0200, lee wrote:
Hi,
I'm trying to pass a physical network interface through to a domU.
This seems to be impossible because the way xen wants to do it is incompatible with the way centos wants to do it.
Huh?
I followed documentation on http://www.xen-support.com/?p=151 and tried booting with 'pciback.permissive pciback.hide=(06:00.0)'. This gives a hint in dmesg "kernel: xen-pciback: backend is vpci", and the device is still visible in dom0. So this obviously doesn't work.
The device should be visible in the dom0 - even when it is for passthrough.
But irrespective of that - the steps mentioned there are out of date. The correct option should be 'xen-pciback.hide=(06:00.0) xen-pciback.permissive=1'
Following http://wiki.xen.org/wiki/Xen_PCI_Passthrough:
which is mentioned in that link.
[root@heimdall ~]# xl pci-assignable-add 06:00.0 xend is running, which may cause unpredictable results when using this xl command. Please shut down xend before continuing.
(This check can be overridden with the -f option.) [root@heimdall ~]#
There doesn't seem to be any documentation about what xend does or is for and how to pass a physical network interface through with it.
Did you just try using the same parameter but replace 'xl' with 'xm'?
I'm starting to think that using centos for a server os is an extremely bad choice because nothing works. It's not like a Linux distribution but like a mess of pieces from several unrelated puzzles thrown together randomly.
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