libvirt users - Apr 2012 - Live migration of instance using KVM hypervisor fails

Hi,

I am trying to migrate a running instance, but it fails with the following
error:
$ virsh migrate  --live instance-00000008 qemu+tcp://10.2.3.150/system --verbose
error: operation failed: migration job: unexpectedly failed

I can see following in the instance specific qemu log directory
(/var/log/libvirt/qemu/instance-00000008.log) on the destination host:
2012-04-12 03:57:26.211: starting up
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin
QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-0.14 -enable-kvm -m 512 -smp
1,sockets=1,cores=1,threads=1 -name instance-00000008 -uuid
86b357d0-b76d-4cde-a0d1-90fb65508ff2 -nodefconfig -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/instance-00000008.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=readline -rtc base=utc -boot c -kernel
/opt/stack/nova/mnt_instances/instance-00000008/kernel -initrd
/opt/stack/nova/mnt_instances/instance-00000008/ramdisk -append root=/dev/vda
console=ttyS0 -drive
file=/opt/stack/nova/mnt_instances/instance-00000008/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none
-device
virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0
-netdev tap,ifname=tap57b16714-9a,script=,id=hostnet0 -device
rtl8139,netdev=hostnet0,id=net0,mac=fa:16:3e:45:b3:c6,bus=pci.0,addr=0x3
-chardev
file,id=charserial0,path=/opt/stack/nova/mnt_instances/instance-00000008/console.log
-device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1
-device isa-serial,chardev=charserial1,id=serial1 -usb -device
usb-tablet,id=input0 -vnc 127.0.0.1:0 -k en-us -vga cirrus -incoming
tcp:0.0.0.0:49169 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5
Domain id=20 is tainted: high-privileges
Domain id=20 is tainted: shell-scripts
char device redirected to /dev/pts/17
2012-04-12 03:57:26.850: shutting down
can't delete tap57b16714-9a from eth1: Operation not supported
SIOCSIFADDR: Permission denied
SIOCSIFFLAGS: Permission denied
SIOCSIFFLAGS: Permission denied
/etc/qemu-ifdown: could not launch network script

Libvirt version on both hosts:
$ libvirtd --version
libvirtd (libvirt) 0.9.2
$ virsh --version
0.9.2

Here are my libvirtd.conf details:
listen_tls = 0
listen_tcp = 1
unix_sock_group = "libvirtd"
unix_sock_rw_perms = "0770"
auth_unix_ro = "none"
auth_unix_rw = "none"
auth_tcp = "none"

Would be great if someone can point out the issue here.

Note: I have disable apparmor for libvirtd profile and am able to list the
instances running on the remote host (from both the servers).

Thanks & Regards,
Unmesh Gurjar | Lead Engineer | Vertex Software Private Ltd. | w.
+91.20.6604.1500 x 379 | m. +91.982.324.7631 | unmesh.gurjar at
nttdata.com<mailto:unmesh.gurjar at nttdata.com> | Follow us on Twitter at
NTTDATAAmericas


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