Find the disk
cd /path/to/vhd/.zfs/snapshot/autosnap/images/100/
Mount disk with losetup
losetup -f -P vm-100-disk-1.raw
Disk is now a loop device which can be mounted
losetup -l
mount -o ro,noload /dev/loop4 /mnt
Do stuff
cd /mnt
Clean up
umount /mnt
losetup -d /dev/loop4