lvs --noheadings -o vg_name,name,lv_size $1 | tee /dev/stderr | while read vg_name name lv_size ; do
lvcreate -s -L $lv_size -n ${name}.snap /dev/$vg_name/$name
+ # wipe beginning so that grub-install doesn't complain
+ dd if=/dev/zero of=/dev/$vg_name/$name bs=1 count=2048
+
# create partition
echo '2048,+,L,*' | sfdisk --no-reread /dev/$vg_name/$name