#! /bin/bash
# FS QA Test No. generic/324
#
# Sanity check for defrag utility.
#
#-----------------------------------------------------------------------
# Copyright (c) 2013 Red Hat, Inc.  All Rights Reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#-----------------------------------------------------------------------

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

PIDS=""
tmp=/tmp/$$
status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

_cleanup()
{
	rm -f $tmp.*
}

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

# real QA test starts here
_supported_os Linux
_require_scratch
_require_defrag
_require_xfs_io_command "falloc"

rm -f $seqres.full

_workout()
{
	nr=$1
	echo "Defragment file with $nr * 2 fragments"
	# Create sparse file
	for ((i=0;i<nr;i++))
	do
		$XFS_IO_PROG -f -c "falloc $((409600*i)) 4k"  \
			$SCRATCH_MNT/test.$nr >> $seqres.full 2>&1
	done
	# Fill holes for half of range , as result file will contain nr*1.5 fragments
	$XFS_IO_PROG -c "falloc 0 $((204800*nr))"  \
	    $SCRATCH_MNT/test.$nr | _filter_xfs_io
	# Data wrilte will convert extetns to inialized ones
	for ((i=0;i<nr;i++))
	do
		patt=`printf "0x%x" $i`
		$XFS_IO_PROG -c "pwrite -S $patt $((i*123400)) 1234" \
			$SCRATCH_MNT/test.$nr | _filter_xfs_io
	done
	_defrag --min_before $nr --max_before $((nr*4)) \
		--min_after 1 $SCRATCH_MNT/test.$nr
}


# Actual testing starting from here
_scratch_mkfs  >> $seqres.full 2>&1
_scratch_mount
_workout 10
_workout 250
_workout 1000
status=0