Re: [libvirt] two hostdev devices problem

Hi, I have libnl3, kernel 3.8.8, os ubuntu 12.04, net:intel10G. Upgrade libnl to 3.2.16 not helps, I don't know - this is probably another problem, when I have set max_vfs=35,35 VF is attaching to VM but mac in VM is not set propertly.

Libvirt probably set this macs because in syslog: May 23 14:48:59 on-10-177-32-62 kernel: [12574.171792] ixgbe

0000:01:00.0: setting MAC 52:54:0a:b1:48:f7 on VF 0 May 23 14:48:59 on-10-177-32-62 kernel: [12574.171799] ixgbe 0000:01:00.0: Reload the VF driver to make this change effective. May 23 14:48:59 on-10-177-32-62 kernel: [12574.175054] ixgbe 0000:01:00.1: setting MAC 52:54:0a:b1:48:f7 on VF 0 May 23 14:48:59 on-10-177-32-62 kernel: [12574.175060] ixgbe 0000:01:00.1: Reload the VF driver to make this change effective. May 23 14:48:59 on-10-177-32-62 kernel: [12574.307172] pci-stub 0000:01:12.4: enabling device (0000 -> 0002) May 23 14:49:00 on-10-177-32-62 kernel: [12575.662890] assign device 0:1:12.4 May 23 14:49:00 on-10-177-32-62 kernel: [12575.665210] pci-stub 0000:01:12.5: enabling device (0000 -> 0002) May 23 14:49:00 on-10-177-32-62 kernel: [12575.765609] assign device 0:1:12.5 But in VM i have another macs probably old from VF. --- Regards Dominik 2013/5/24 Laine Stump <laine(a)laine.org&gt;: > 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 >>