modprobe nbd max_part=8
qemu-nbd --connect=/dev/nbd0 /var/lib/libvirt/images/chd-stg2.qcow2 
fdisk /dev/nbd0 -l 
partprobe 
mount -o ro /dev/nbd0p1 /mnt/loop
cd /mnt/loop/var/log
ls
cd /mnt/
umount /mnt/loop
qemu-nbd --disconnect /dev/nbd0 
dmesg | tail