On Dom0:

qemu-img create -f raw /vm/hdd0/kamino/data_03.img 20G

chown qemu:qemu /vm/hdd0/kamino/data_03.img
chmod 600 /vm/hdd0/kamino/data_03.img

virsh attach-disk kamino /vm/hdd0/kamino/data_03.img vdh --driver qemu --subdriver raw --targetbus virtio --persistent


qemu-img create -f raw /vm/hdd0/kamino/fra_02.img 20G

chown qemu:qemu /vm/hdd0/kamino/fra_02.img
chmod 600 /vm/hdd0/kamino/fra_02.img

virsh attach-disk kamino /vm/hdd0/kamino/fra_02.img vdi --driver qemu --subdriver raw --targetbus virtio --persistent


On VM:

pvcreate /dev/vdh
pvcreate /dev/vdi

vgextend vg_data /dev/vdh
vgextend vg_fra /dev/vdi



lvcreate -s -n lv_snap_data -L 19G vg_data/lv_data




mkdir /snap_data /snap_fra

# On XFS add options: rw,nouuid, otherwise the mount fails
mount -o rw,nouuid /dev/vg_data/lv_snap_data /snap_data

# try: xfs_admin -U generate /dev/vg_data/lv_snap_data

umount /snap_data
lvremove vg_data/lv_snap_data