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#!/bin/sh
#set -vx
PATH="`dirname $0`/../src:$PATH"
[ $# -lt 1 ] && echo "usage: $0 <dev> [max size]" && exit 1
DEV=$1
if [ -b $DEV ]; then
BASE=`basename $DEV`
MAJ=`ls -l $DEV | tr "," " " | awk '{ print $5 }'`
MIN=`ls -l $DEV | awk '{ print $6 }'`
MAX=`awk "/$MAJ *$MIN / { print \\$3 }" /proc/partitions`
elif [ -f $DEV ]; then
MAX=`ls -s $BASE | awk '{ print $1 }'`
elif [ "$2" ]; then
MAX=$2
else
echo "Can't find size of $DEV. You must specify max size"
exit 1
fi
MIN=4096
SIZE=`dumpe2fs -h $DEV | awk '/^Block count/ { print $3 }'`
[ -z "$SIZE" ] && echo "No ext2 filesystem on $DEV. Do 'mke2fs $DEV'" && exit 1
BLKSZ=`dumpe2fs -h $DEV | awk '/^Block size/ { print $3 }'`
BLKSZ=`expr $BLKSZ / 1024`
MAX=`expr $MAX / $BLKSZ`
RC=0
if [ "`mount | grep $DEV`" ]; then
RESIZE=ext2online
SUB=0
else
RESIZE=ext2resize
SUB=8192
fi
ELOG=e2fsck.log
DLOG=dumpe2fs.log
FLOG=testresize.log
echo "TEST: $RESIZE on $DEV [ min $MIN, current $SIZE, max $MAX ]"
echo "TEST: press <enter> to continue"
read JUNK
e2fsck -n -f $DEV > $ELOG 2>&1
RC=$?
[ $RC -ne 0 ] && cat $ELOG && echo "TEST: e2fsck exit with $RC"
while [ $RC -eq 0 ]; do
NEWSIZE=`expr $SIZE + $RANDOM - $SUB`
[ $NEWSIZE -le $MIN ] && NEWSIZE=$MIN && SUB=8192
if [ $NEWSIZE -ge $MAX ]; then
if [ "$RESIZE" = "ext2online" ]; then
echo "TEST: maximum size reached for online resizing"
exit 0
fi
NEWSIZE=$MAX && SUB=40960
fi
echo "TEST: resize from $SIZE to $NEWSIZE"
$RESIZE -v -d $DEV $NEWSIZE 2>&1
RC=$?
if [ $RC -ne 0 ]; then
echo "TEST: $RESIZE exited with $RC"
else
e2fsck -n -f $DEV > $ELOG 2>&1
RC=$?
[ $RC -ne 0 ] && cat $ELOG && echo "TEST: e2fsck exit with $RC"
fi
SIZE=$NEWSIZE
done | tee $FLOG
dumpe2fs $DEV > $DLOG
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