[libvirt] images on NFS do not have MCS when selinux is on

[yue]

hi,all
i now test selinux(enforcing).   i assign a nfs-image to a VM, then  start it.
at the beginning i  set virt_use_nfs on, its image does not has a MCS corresponding to qemu-kvm process's MCS
then i remount nfs with -o context="system_u:object_r:virt_image_t:s0" , restart VM, its image does not has a corresponding MCS.
#ls -lZ
####system_u:object_r:virt_image_t:s0 803003d2-3a2b-4581-a7cb-dc7fac06e7af
why this happen? if this is right for NFS?
 
thanks
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/libvir-list/attachments/20130408/b49ee4d4/attachment-0001.htm>