#!/bin/csh -f

# C-shell script to run part A of test 02 but using the _LINEAR_ target.

echo 'creating new pv file'
dd if=/dev/zero of=dev01 bs=512 count=2105344
echo ''

echo 'setting up lv'
losetup /dev/loop0 dev01
pvcreate /dev/loop0
vgcreate vg1 /dev/loop0
lvcreate -L 1024M -n lv1 vg1

echo 'setting up linear mapping'
dmsetup create fred01 --table '0 2097152 linear /dev/vg1/lv1 0'

echo 'writing the whole thing'
sleep 3
dd if=/dev/urandom of=/dev/mapper/fred01 bs=8192
echo ''

echo 'making a copy'
sleep 3
cp -i /dev/vg1/lv1 zz.file
echo ''

echo 'doing a first diff'
sleep 3
diff /dev/vg1/lv1 zz.file
echo first diff status was $status
echo ''

echo 'showing the first contents'
od -A x -xc /dev/vg1/lv1 | head
echo ''

echo 'removing the linear mapping so the changes can be seen'
sleep 3
dmsetup remove fred01
echo ''

echo 'showing the second contents'
od -A x -xc /dev/vg1/lv1 | head
echo ''

echo 'doing a second diff'
sleep 3
diff /dev/vg1/lv1 zz.file
echo second diff status was $status
echo ''