Re: [libvirt] two hostdev devices problem
On 05/22/2013 06:32 PM, Dominik Mostowiec wrote:
I tested on 1.0.5 patched version and vm with 2 vfs working fine.
I have another problem
When i set max_vfs=63:
internal error missing IFLA_VF_INFO in netlink response
Its working when max_vfs=31
What is the platform, kernel version, and what version of libnl are you
using (libnl 1 or libnl3?)
There have been multiple bugs recently filed and fixed in this area on
RHEL6/CentOS6. In particular, there was a problem with max_vfs > 50 that
had exactly this symptom. It was solved by a patch to libnl-1.1. If your
platform uses libnl-1.1, this could be the source of the problem. It is
fixed in the upstream libnl-1.1.4 maintenance release.
I unfortunately am not sure where the libnl-1.1 git is (I only have the
git tree for libnl3), so I can't give you the exact commit message, but
in short the problem was that libnl was using too small of a buffer for
the netlink socket, so when there were a lot of vfs, the netlink message
containing vf info was truncated.
--
Dominik
21 maj 2013 15:19, "Dominik Mostowiec" <dominikmostowiec(a)gmail.com
<mailto:dominikmostowiec@gmail.com>> napisał(a):
Hmm,
It seems to be working (after only simple tests).
--
Dominik
2013/5/21 Ján Tomko <jtomko(a)redhat.com <mailto:jtomko@redhat.com>>
On 05/21/2013 01:37 PM, Laine Stump wrote:
> On 05/21/2013 04:03 AM, Ján Tomko wrote:
>> On 05/21/2013 09:32 AM, Dominik Mostowiec wrote:
>>> hi,
>>> I try to add 2 VF by "hostdev".
>>> Networks (vnet0, vnet1) with:
>>> <forward mode='hostdev' managed='yes'>
>>> <pf dev='eth1'/>
>>> .....
>>>
>>> Domain:
>>> <interface type="network">
>>> <source network="vnet0"/>
>>> ....
>>> <interface type="network">
>>> <source network="vnet1"/>
>>> ....
>>>
>>> virsh create error:
>>> "error: internal error process exited while connecting to
monitor: kvm:
>>> -device
pci-assign,configfd=25,host=01:10.1,id=hostdev0,bus=pci.0,addr=0x4:
>>> Duplicate ID 'hostdev0' for device"
>>>
>> Hi,
>>
>> it seems we have been assigning the same id to all network
hostdevs until this
>> recent commit (not yet released):
>>
>> http://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=6597cc25
>
>
> If that patch has such an effect, it's purely accidental.
Have you
> tested this? (I plan to test a before and after as soon as
I've had
> breakfast)
>
I haven't tested it and looking at the code again, I might've
been wrong :(
Sorry about that.
Jan
--
Pozdrawiam
Dominik