maketr

#!/bin/sh
#
# Example script to make a transaction log file
# Must be run as root. Remember to chown the file afterwards

# Insert the name of a tarfile here
tarfile=/home/amb/iptables/iptables_1.4.4.orig.tar.gz
tmpnam=`mktemp`
conffile=${tmpnam}.conf
pidfile=${tmpnam}.pid
output=`pwd`/output.tr

ulimit -c unlimited

cat >${conffile} <<EOF
[generic]
[export1]
        exportname = $tmpnam
	transactionlog = $output
        flush = true
        fua = true
        rotational = true
EOF
./nbd-server -C ${conffile} -p ${pidfile} &
PID=$!
sleep 1
dd if=/dev/zero of=${tmpnam} bs=1M count=50
./nbd-client -N export1 127.0.0.1 /dev/nbd0
mkfs.ext3 /dev/nbd0
mount -t ext3 -odata=journal,barrier=1 /dev/nbd0 /mnt
(cd /mnt ; tar xvzf ${tarfile} ; sync) 2>&1 >/dev/null
umount /mnt
mount -t ext3 -odata=journal,barrier=1 /dev/nbd0 /mnt
(cd /mnt ; tar cvzf /dev/null . ; sync) 2>&1 >/dev/null
dbench -D /mnt 1 &
sleep 10
killall dbench
sleep 2
killall -KILL dbench
sync
umount /mnt
./nbd-client -d /dev/nbd0
if [ -f ${pidfile} ]
then
        kill `cat ${pidfile}`
        rm -f ${pidfile}
else
        kill $PID
fi
rm -f $tmpnam ${conffile}
ls -la ${output}