export LVMPATH="/dev/vg-sdb/vm-130-disk-1"
lvchange -a y $LVMPATH
/sbin/fdisk -lu $LVMPATH
losetup /dev/loop0 $LVMPATH -o $((XXXXX * 512)) # replace XXXXX by the offset of the partition
mkdir /mnt/tmp
mount /dev/loop0 /mnt/tmp

# do

cd
umount /mnt/tmp
losetup -d /dev/loop0
lvchange -a n $LVMPATH