Re: PCI-passthrough on AMD - OpenVox A400P

[Daniel Bareiro <daniel-listas@gmx.net>]

[-- Attachment #1: Type: text/plain, Size: 2542 bytes --]

On Tuesday, 09 April 2013 12:06:25 -0600,
Alex Williamson wrote:

> > I've a cluster (active/passive) with two KVM VM with Asterisk and
> > Pacemaker+Corosync. I wonder if anyone tried to use a OpenVox A400P
> > card from a virtual machine.
> > 
> > My idea is to have both nodes accessing this card. I don't know if
> > it is possible, I wish that in this scenario when a node is
> > accessing the card, the other don't use it.
> > 
> > Of course this is a scenario for testing, but I wonder if I can do
> > this kind of configuration on the cluster over virtual machines.
> > 
> > Hardware:
> > Motherboard: ASUS M2N32-SLI DELUXE ACPI BIOS Revision 0706
> > Processor:   AMD Athlon(tm) 64 X2 Dual Core Processor 3800+
> > 
> > The hardware seems to support IOMMU, but it is not enabled:
> > 
> > # dmesg | grep -i iommu
> > [    0.000000] Please enable the IOMMU option in the BIOS setup
> > [    0.654618] PCI-DMA: using GART IOMMU.
> > [    0.654623] PCI-DMA: Reserving 64MB of IOMMU area in the AGP aperture
> > 
> > 
> > Software versions:
> > 
> > # uname -a
> > Linux ss01 2.6.39-bpo.2-amd64 #1 SMP Thu Aug 4 11:42:06 UTC 2011 x86_64 GNU/Linux
> > 
> > # kvm --version
> > QEMU emulator version 1.1.2 (qemu-kvm-1.1.2+dfsg-5~bpo60+1, Debian), Copyright (c) 2003-2008 Fabrice Bellard

Hi, Alex.

 
> AFAIK, Athlon64 does not support AMD-Vi, which is the IOMMU support
> you'd need.

I will investigate this issue and then tell you.

> PCI passthrough also only works for VMs running on the same system
> where the card is installed, and doesn't offer multiplexing of a
> single device.  Thanks,

The two cluster nodes are running on the same host. On the issue of
multiplexing, was mostly a curiosity. For testing, I do not care to have
to manually link and unlink the PCI device.


Moreover, is having a problem with the mailing list? For some time I did
not write and since I was not receiving emails from October last year, I
signed up again with the same account that I was using before; but since
9 April that I do not receive emails from the list.

Interestingly I got your reply but did not get the email I sent to the
list. Today I wrote an email to the Pacemaker list with the same account
I used to sign up here, and I received it with no problems.


Thanks for your reply.


Regards,
Daniel
-- 
Daniel Bareiro - System Administrator
Fingerprint: BFB3 08D6 B4D1 31B2 72B9  29CE 6696 BF1B 14E6 1D37
Powered by Debian GNU/Linux Squeeze - Linux user #188.598

[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 197 bytes --]