Can I perform live migration using the NFS Backend ?

When i try I receive the following error:

[instance: 02c278ba-b79a-49bb-bfd0-b5e7c5667679] Live Migration failure: Unsafe migration: Migration may lead to data corruption if disks use cache != none
[instance: 02c278ba-b79a-49bb-bfd0-b5e7c5667679] Migration operation has aborted

My cinder Config:

[cinder_netapp]
netapp_login=root
netapp_eseries_host_type=linux_dm_mp
netapp_controller_ips=
netapp_size_multiplier=1.2
netapp_vserver=
netapp_server_port=80
nfs_shares_config=/etc/cinder/shares.conf
netapp_sa_password=
thres_avl_size_perc_start=20
netapp_storage_pools=
volume_driver=cinder.volume.drivers.netapp.common.NetAppDriver
netapp_storage_protocol=nfs
netapp_storage_family=ontap_7mode
volume_backend_name=cinder_netapp
thres_avl_size_perc_stop=60
netapp_vfiler=
netapp_volume_list=
netapp_server_hostname=10.1.0.25
expiry_thres_minutes=2160
netapp_transport_type=http
netapp_password=manager
netapp_webservice_path=/devmgr/v2
netapp_copyoffload_tool_path=
nfs_mount_options=rw,bg,hard,nointr,tcp,vers=3,timeo=600,rsize=32768,wsize=32768,actimeo=0,sec=sys

root@node-3:~# cat /etc/cinder/shares.conf
10.250.3.253:/vol/openstack

Mounts:

root@node-3:~# df -h
Filesystem                        Size  Used Avail Use% Mounted on
udev                               16G   12K   16G   1% /dev
tmpfs                             3.2G   13M  3.2G   1% /run
/dev/dm-1                          27G  2.8G   23G  12% /
none                              4.0K     0  4.0K   0% /sys/fs/cgroup
none                              5.0M     0  5.0M   0% /run/lock
none                               16G     0   16G   0% /run/shm
none                              100M     0  100M   0% /run/user
/dev/sda3                         196M   44M  143M  24% /boot
/dev/mapper/vm-nova                47G   33M   47G   1% /var/lib/nova
10.250.3.253:/vol/openstack_inst   31G   21G   11G  67% /var/lib/nova/instances
10.250.3.253:/vol/openstack       750G  642G  109G  86% /var/lib/cinder/mnt/36f09148d1243e64fbe04aa72c497a2e
10.250.3.253:/vol/openstack       750G  642G  109G  86% /var/lib/nova/mnt/36f09148d1243e64fbe04aa72c497a2e