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|
#
# This simple script is a helper to run torture tests on 'fstransform.sh'
#
# It is designed assuming the availability of certain files and commands
# in certain hard-coded paths,
# and it will NOT be useful for the general public until customized.
#
DEVICE_FILE_SAVE=0.device
DEVICE_FILE=1.device
LOOP_FILE=random
DEVICE_MOUNT_POINT=device
ZERO_FILE=zero
FSREMAP=fsremap
CAT_RANDOM=cat-random
set -e
set -x
if [ "$1" = "" ]; then
TESTDIR=torture-test.dir.0
else
TESTDIR="$1"
shift
fi
if [ "$1" = "" ]; then
# this is a race condition if multiple torture-test.sh are executed simultaneously:
# in such case you must specify explicitly which loop device to use
DEVICE=`losetup -f`
else
DEVICE="$1"
shift
fi
if [ "$1" = "" ]; then
FILE_SIZE=16777216
else
FILE_SIZE=`expr $1 / 4096 \* 4096`
shift
fi
if [ "$#" = 0 ]; then
MKFS="mkfs -t ext2"
else
MKFS="$@"
fi
DEVICE_SIZE=`expr $FILE_SIZE \* 11 / 10 / 4096 \* 4096`
mkdir "$TESTDIR" || true
mount -t tmpfs tmpfs "$TESTDIR"
mkdir "$TESTDIR"/device
pushd "$TESTDIR"
exec >& log.txt
cleanup() {
set +e
exec >& /dev/tty
trap - EXIT SIGHUP SIGINT SIGQUIT SIGILL SIGTRAP SIGABRT SIGBUS SIGFPE SIGSEGV SIGALRM SIGTERM SIGSTKFLT
echo 'press ENTER to delete test files and quit.'
read dummy
popd
umount "$TESTDIR"/$DEVICE_MOUNT_POINT
losetup -d "$DEVICE"
umount "$TESTDIR"
rmdir "$TESTDIR"
exit 1
}
trap cleanup EXIT SIGHUP SIGINT SIGQUIT SIGILL SIGTRAP SIGABRT SIGBUS SIGFPE SIGSEGV SIGALRM SIGTERM SIGSTKFLT
$CAT_RANDOM $FILE_SIZE > $LOOP_FILE
truncate -s $DEVICE_SIZE $LOOP_FILE
while true; do
rm -f $DEVICE_FILE
truncate -s $DEVICE_SIZE $DEVICE_FILE
losetup -d "$DEVICE" 2>/dev/null || true
losetup "$DEVICE" $DEVICE_FILE
$MKFS "$DEVICE"
mount "$DEVICE" $DEVICE_MOUNT_POINT
cp -avf --sparse=always $LOOP_FILE $DEVICE_MOUNT_POINT/
dd bs=512 if=/dev/zero of=$DEVICE_MOUNT_POINT/$ZERO_FILE 2>/dev/null || true
# show $ZERO_FILE length
stat --format=%s $DEVICE_MOUNT_POINT/$ZERO_FILE
mount -o remount,ro "$DEVICE"
sync
cp -vf --sparse=always "$DEVICE" $DEVICE_FILE_SAVE
$FSREMAP -t . -q "$DEVICE" $DEVICE_MOUNT_POINT/$LOOP_FILE $DEVICE_MOUNT_POINT/$ZERO_FILE < /dev/null
umount "$DEVICE" || true
if false; then
if ! cmp "$DEVICE" $DEVICE_FILE; then
echo "$DEVICE and $DEVICE_FILE differ!!! bug in Linux loop devices?"
cmp -l "$DEVICE" $DEVICE_FILE | less
break
fi
fi || true
sync
if ! losetup -d "$DEVICE"; then
fuser -vm "$DEVICE" || true
losetup -d "$DEVICE"
fi
if ! cmp $LOOP_FILE $DEVICE_FILE; then
echo "$LOOP_FILE and $DEVICE_FILE differ!!! bug in fsremap?"
cmp -l $LOOP_FILE $DEVICE_FILE | less
break
fi
done
exit 1
|
