dd if=binary.img of=/dev/sdb
Then, I use the remaining space for a partition called 'data' with an ext2 filesystem. In this partition, I create an image file called 'live-sn' with an ext2 filesystem labeled 'live-sn':
# dd if=/dev/null of=live-sn bs=1G
# mkfs.ext2 -L live-sn -F live-sn
When I halt the live system or when I try to resync the snapshot (sudo live-snapshot --refresh) I get the following error:
live-snapshot: error: unrecognized resync string
Snapshot persistence is working with an ext2 partition labeled live-sn but not with image files as I commented above.