I'm new to libvirt and I'm facing a problem while migrating the guest domain. 

Both guest and host are of the same config(checked it with uname -a)

Migrating using virsh, I get:

The details of the problem are shown by the Virtual machine manger are:

Unable to migrate guest: operation failed: migration to 'tcp:kvm-lab:49165' failed: migration failed

Traceback (most recent call last):

  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 45, in cb_wrapper

    callback(asyncjob, *args, **kwargs)

  File "/usr/share/virt-manager/virtManager/migrate.py", line 523, in _async_migrate

    vm.migrate(dstconn, migrate_uri, rate, live, secure, meter=meter)

  File "/usr/share/virt-manager/virtManager/domain.py", line 1141, in migrate

    self._backend.migrate(destconn.vmm, flags, newname, interface, rate)

  File "/usr/lib/python2.7/dist-packages/libvirt.py", line 521, in migrate

    if ret is None:raise libvirtError('virDomainMigrate() failed', dom=self)

libvirtError: operation failed: migration to 'tcp:kvm-lab:49165' failed: migration failed

I've tried disabling apparmor and then migrating by-

pre@pre-Inspiron-N4010:~$ sudo invoke-rc.d apparmor kill

and

stopping iptables-

Thank you.