[libvirt-users] [SOLVED] Re: old vm cannot be migrated, new vm can be migrated

[gustavo panizzo (gfa)]

argggg nevermind

was a problem with neutron, sorry for the noise


On 11/05/2014 04:50 PM, gustavo panizzo (gfa) wrote:
> scenario:
>
> i run a mix of libvirt 1.1.1 and 1.2.2 on the source hosts, 1.2.2 on the
> destination hosts
> qemu: 1.5.0+dfsg-3ubuntu5.3~cloud0 on all the hosts
> openstack havana and icehouse
>
> description:
>
> i have many compute nodes running libvirt+kvm, when i try to migrate
> guest that were created months ago it fails, if i create a vm and then
> migrate it works
>
> the problem is that libvirt cannot retrieve the mtu of the bridge were
> the interfaces are be attached, but bridge is there (up and running)
>
> $ grep qbr32740ab3-b6 /var/log/libvirt/libvirtd.log
>
>
> 2014-11-05 08:44:53.013+0000: 35311: debug : udevGetDeviceProperty:121 :
> udev reports device 'qbr32740ab3-b6' does not have property 'DRIVER'
> 2014-11-05 08:44:53.013+0000: 35311: debug : udevGetDeviceType:1217 :
> Could not determine device type for device with sysfs name 'qbr32740ab3-b6'
> 2014-11-05 08:44:53.013+0000: 35311: debug : udevAddOneDevice:1392 :
> Discarding device -1 0x7f36e80bd5c0 /sys/devices/virtual/net/qbr32740ab3-b6
> 2014-11-05 08:44:53.013+0000: 35311: debug :
> udevProcessDeviceListEntry:1414 : Failed to create node device for udev
> device '/sys/devices/virtual/net/qbr32740ab3-b6'
> 2014-11-05 08:45:08.458+0000: 35303: error :
> virNetClientProgramDispatchError:175 : Cannot get interface MTU on
> 'qbr32740ab3-b6': No such device
>
>
> # ip l show dev qbr32740ab3-b6
> 639: qbr32740ab3-b6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
> noqueue state UP
>      link/ether 72:d5:db:f6:b5:30 brd ff:ff:ff:ff:ff:ff
>
> # brctl show qbr32740ab3-b6
> bridge name    bridge id        STP enabled    interfaces
> qbr32740ab3-b6        8000.72d5dbf6b530    no        qvb32740ab3-b6
>                              tap32740ab3-b6
>
> the difference between a new defined domain and an old one
> is this
>
> <   <alias name='pci0'/>
> ---
>  >   <alias name='pci.0'/>
>
>  >   <timer name='hpet' present='no'/>   ---> old domain does not have it
>
> i even tried patching src/util/virnetdev.c to remove the check and
> always return 1500 but the same thing happens
>
>
>
> i'm lost i don't know where to look at it, any clue were to look is
> appreciated
>
>
>
>
>

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