#!/bin/sh
#
# Script which does some basic tests to ensure we haven't regressed.
# Probably a good idea to run this before doing any checkins.
# In the future this can become more fancy, but it's OK for now.

SRCDIR="`dirname $0`"
fail() { 
	echo "ERROR: $1" 1>&2
	[ $2 ] && RC=$2 || RC=1
	exit $RC
}

log() {
	echo "$*"
	lctl mark "$*"
}

export PATH=/sbin:/usr/sbin:$SRCDIR:$SRCDIR/../utils:$PATH

ERROR=
SRC=/etc
[ "$COUNT" ] || COUNT=1000

[ "$LCONF" ] || LCONF=$SRCDIR/../utils/lconf

[ "$MCREATE" ] || MCREATE=$SRCDIR/../tests/mcreate

[ "$MKDIRMANY" ] || MKDIRMANY=$SRCDIR/../tests/mkdirmany

while [ "$1" ]; do
	case $1 in
	*.xml) export NAME=`echo $1 | sed "s/.xml//"` ;;
	esac
	shift
done

MOUNT="`mount | awk '/ lustre_lite / { print $3 }' | tail -1`"
if [ -z "$MOUNT" ]; then
	sh llmount.sh
	MOUNT="`mount | awk '/ lustre_lite / { print $3 }' | tail -1`"
	[ -z "$MOUNT" ] && fail "no lustre filesystem mounted" 1
	I_MOUNTED="yes"
fi

OSCTMP=`echo $MOUNT | tr "/" "."`
USED=`df | awk "/$OSCTMP/ { print \\$3 }" | tail -1`
USED=`expr $USED + 16`	# Some space for the status file

# let's start slowly here...
log "touching $MOUNT"
touch $MOUNT || fail "can't touch $MOUNT" 2
HOSTS=$MOUNT/hosts.$$

if [ $COUNT -gt 10 -o $COUNT -eq 0 ]; then
	# this will cause the following cp to trigger bug #620096
	log "create an empty file $HOSTS"
	mcreate $HOSTS
	log "copying /etc/hosts to $HOSTS"
	cp /etc/hosts $HOSTS || fail "can't cp /etc/hosts to $HOSTS" 3
	log "comparing /etc/hosts and $HOSTS"
	diff -u /etc/hosts $HOSTS || fail "$HOSTS different" 4
	log "renaming $HOSTS to $HOSTS.ren"
	mv $HOSTS $HOSTS.ren || fail "can't rename $HOSTS to $HOSTS.ren" 5
	log "copying /etc/hosts to $HOSTS again"
	cp /etc/hosts $HOSTS || fail "can't cp /etc/hosts to $HOSTS again" 6
	log "truncating $HOSTS"
	> $HOSTS || fail "can't truncate $HOSTS" 8
	log "removing $HOSTS"
	rm $HOSTS || fail "can't remove $HOSTS" 9
fi

DST=$MOUNT/runtest.$$
# let's start slowly here...
log "creating $DST"
mkdir $DST || fail "can't mkdir $DST" 10

# ok, that hopefully worked, so let's do a little more, with files that
# haven't changed in the last day (hopefully they don't change during test)
FILES=`find $SRC -type f -mtime +1 -ctime +1 | head -$COUNT`
log "copying files from $SRC to $DST$SRC"
tar cf - $FILES | tar xvf - -C $DST || fail "copying $SRC" 11

log "comparing newly copied files"
for f in $FILES; do
	[ $V ] && log "verifying $DST/$f"
	diff -q $f $DST/$f || ERROR=11
done

[ "$ERROR" ] && fail "old and new files are different" $ERROR

sh llmountcleanup.sh || exit 19
sh llrmount.sh || exit 20

log "comparing previously copied files"
for f in $FILES; do
	[ $V ] && log "verifying $DST/$f"
	diff -q $f $DST/$f || ERROR=22
done

[ "$ERROR" ] && fail "old and new files are different on second diff" $ERROR

sh llmountcleanup.sh || exit 19
sh llrmount.sh || exit 20

log "removing $DST"
rm -r $V $DST || fail "can't remove $DST" 37

if [ $COUNT -gt 10 -o $COUNT -eq 0 ]; then
	log "renaming $HOSTS.ren to $HOSTS"
	mv $HOSTS.ren $HOSTS || fail "can't rename $HOSTS.ren to $HOSTS" 32
	log "truncating $HOSTS"
	> $HOSTS || fail "can't truncate $HOSTS" 34
	log "removing $HOSTS"
	rm $HOSTS || fail "can't remove $HOSTS again" 36
fi

# mkdirmany test (bug 589)
log "running mkdirmany $MOUNT/base$$ 100"
$MKDIRMANY $MOUNT/base$$ 100 || fail "mkdirmany failed"
log "removing mkdirmany directories"
rmdir $MOUNT/base$$* || fail "mkdirmany cleanup failed"

log "done"

NOWUSED=`df | awk "/$OSCTMP/ { print \\$3 }" | tail -1`
if [ `expr $NOWUSED - $USED` -gt 1024 ]; then
	echo "Space not all freed: now ${NOWUSED}kB, was ${USED}kB." 1>&2
fi

if [ "$I_MOUNTED" = "yes" ]; then
	sh llmountcleanup.sh || exit 29
fi