#! /bin/sh
# XFS QA Test No. 004
# $Id: 1.1 $
#
# exercise xfs_db bug #789674 and other freesp functionality
#
#-----------------------------------------------------------------------
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# This program is free software; you can redistribute it and/or modify it
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# Further, this software is distributed without any warranty that it is
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# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
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# with this program; if not, write the Free Software Foundation, Inc., 59
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# http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
#-----------------------------------------------------------------------
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# creator
owner=nathans@sgi.com

seq=`basename $0`
echo "QA output created by $seq"

here=`pwd`
tmp=/tmp/$$
status=0

_cleanup()
{
	umount $SCRATCH_MNT
	rm -f $tmp.*
	exit $status
}
trap "_cleanup" 0 1 2 3 15

_populate_scratch()
{
	mkfs_xfs $SCRATCH_DEV | _filter_mkfs 2>$tmp.mkfs
	source $tmp.mkfs
	mount -t xfs $SCRATCH_DEV $SCRATCH_MNT
	dd if=/dev/zero of=$SCRATCH_MNT/foo count=200 bs=4096 >/dev/null 2>&1 &
	dd if=/dev/zero of=$SCRATCH_MNT/goo count=400 bs=4096 >/dev/null 2>&1 &
	dd if=/dev/zero of=$SCRATCH_MNT/moo count=800 bs=4096 >/dev/null 2>&1 &
	wait
	umount $SCRATCH_MNT			# flush everything
	mount -t xfs $SCRATCH_DEV $SCRATCH_MNT	# and then remount
}


# get standard environment, filters and checks
. ./common.rc
. ./common.filter

_need_to_be_root
_require_scratch

# real QA test starts here
rm -f $seq.full

_populate_scratch

eval `df -P -T --block-size=512 $SCRATCH_MNT 2>&1 \
	| $AWK_PROG 'END { printf "blocks=%u used=%u avail=%u\n", $3, $4, $5 }'`
echo "df gave: blocks=$blocks used=$used avail=$avail" >>$seq.full
echo "blocksize from mkfs is '$dbsize'" >>$seq.full

xfs_db -r -c "freesp -s" $SCRATCH_DEV >$tmp.xfs_db
echo "xfs_db for $SCRATCH_DEV" >>$seq.full
cat $tmp.xfs_db >>$seq.full

# check the 'blocks' field from freesp command is OK
perl -ne '
	    BEGIN	{ $avail ='$avail' * 512;
			  $answer="(no xfs_db free blocks line?)" }
	    /free blocks (\d+)$/	|| next;
	    $freesp = $1 * '$dbsize';
	    if ($freesp == $avail)	{ $answer = "yes"; }
	    else			{ $answer = "no ($freesp != $avail)"; }
	    END	{ print "$answer\n" }
	' <$tmp.xfs_db >$tmp.ans
ans="`cat $tmp.ans`"
echo "Checking blocks column same as df: $ans"
if [ "$ans" != yes ]
then
	echo "Error: $SCRATCH_DEV: freesp mismatch: $ans"
	echo "xfs_db output ..."
	cat $tmp.xfs_db
	status=1
fi

# check the 'pct' field from freesp command is good
perl -ne '
	    BEGIN	{ $percent = 0; }
	    /free/	&& next;	# skip over free extent size number
	    if (/\s+(\d+\.\d+)$/) {
		$percent += $1;
	    }
	    END	{ $percent += 0.5; print int($percent), "\n" }	# round up
' <$tmp.xfs_db >$tmp.ans
ans="`cat $tmp.ans`"
echo "Checking percent column yields 100: $ans"
if [ "$ans" != 100 ]
then
	echo "Error: $SCRATCH_DEV: pct mismatch: $ans (expected 100)"
	echo "xfs_db output ..."
	cat $tmp.xfs_db
	status=1
fi

exit