Upstream fix proposed: https://www.redhat.com/archives/libvir-list/2012-December/msg01266.html
In POST: http://post-office.corp.redhat.com/archives/rhvirt-patches/2012-December/msg00575.html
verify with build: libvirt-0.10.2-14.el6.x86_64 qemu-kvm-rhev-0.12.1.2-2.348.el6.x86_64 step: # vgcreate vgtest1 /dev/mapper/1IET_00010001 # lvcreate -n lvbaseimg1 -L 1G vgtest1 # lvcreate -n lvbaseimg2 -L 1G vgtest1 # lvcreate -n lvleafimg1 -L 1G vgtest1 # lvcreate -n lvleafimg2 -L 1G vgtest1 # qemu-img create -f qcow2 -F raw -b /dev/vg_virt/lvbaseimg1 /dev/vg_virt/lvleafimg1 # qemu-img create -f qcow2 -F raw -b /dev/vg_virt/lvbaseimg2 /dev/vg_virt/lvleafimg2 # cat > vm1.xml <<EOF <domain type="kvm"> <name>vm1</name> <memory>131072</memory> <devices> <disk device="disk" type="block"> <source dev="/dev/vg_virt/lvleafimg1"/> <target bus="ide" dev="hda"/> <driver name="qemu" type="qcow2"/> </disk> </devices> <os> <type arch="x86_64" machine="pc">hvm</type> </os> </domain> EOF # for i in /dev/vg_virt/lv*; do chgrp -v qemu $(readlink -f $i); done #virsh create vm1.xml # virsh blockcopy --shallow --reuse-external --wait vm1 /dev/vg_virt/lvleafimg1 /dev/vg_virt/lvleafimg2 Now in mirroring phase #for i in /dev/vg_virt/lv*; do ls -Z $(readlink -f $i); done brw-rw----. qemu qemu system_u:object_r:virt_content_t:s0 /dev/dm-0 brw-rw----. qemu qemu system_u:object_r:virt_content_t:s0 /dev/dm-1 brw-rw----. qemu qemu unconfined_u:object_r:svirt_image_t:s0:c256,c359 /dev/dm-2 brw-rw----. root root system_u:object_r:fixed_disk_device_t:s0 /dev/dm-3 make sure blockjob in phase two #virsh blockjob --info vm1 /dev/vg_virt/lvleafimg1 Block Copy: [100 %] # virsh blockjob --pivot vm1 /dev/vg_virt/lvleafimg1 no error display # for i in /dev/vg_virt/lv*; do ls -Z $(readlink -f $i); done brw-rw----. qemu qemu system_u:object_r:virt_content_t:s0 /dev/dm-0 brw-rw----. qemu qemu system_u:object_r:virt_content_t:s0 /dev/dm-1 brw-rw----. qemu qemu unconfined_u:object_r:svirt_image_t:s0:c538,c961 /dev/dm-2 brw-rw----. qemu qemu unconfined_u:object_r:svirt_image_t:s0:c538,c961 /dev/dm-3 #virsh dumpxml vm1 ..... <disk type='block' device='disk'> <driver name='qemu' type='qcow2'/> <source dev='/dev/vg_virt/lvleafimg2'/> <target dev='hda' bus='ide'/> ..... worked as expect. verification passed.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHSA-2013-0276.html