#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2007 Silicon Graphics, Inc.  All Rights Reserved.
#
# FS QA Test No. 165
#
# Test out prealloc, direct writes and buffered read
# Some experimentation when looking at 
#   pv#962014 - DMF 3.7 reading incorrect data 
# Doesn't actually reproduce the problem but it tried to :-)
#
seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"

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

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

_filter_io()
{
    tee -a $seqres.full | _filter_xfs_io
}

#
# <    1: [8..79]:         6552..6623        0 (6552..6623)        72
# >    1: [8..79]:         202544..202615    0 (202544..202615)    72
#
_filter_bmap()
{
    awk '$3 ~ /hole/ { print $1, $2, $3; next }
         {print $1, $2}' >> $seqres.full
}

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

# real QA test starts here

# Modify as appropriate.
_supported_fs xfs
_supported_os Linux
_require_test

# io tests 
testfile=$TEST_DIR/file.$seq
rm -f $testfile
rm -f $seqres.full
len=4
end=`expr 10 \* $len`

# Other test...
#$XFS_IO_PROG -f -c "resvsp ${off}k ${end}k" $testfile

# write the initial file
$XFS_IO_PROG -f -c "pwrite 0  ${end}k" $testfile | _filter_io

off=0
while [ $off -le $end ]
do
	offset=${off}k
	length=${len}k

	$XFS_IO_PROG -c "unresvsp $offset $length" -c "bmap -vp" $testfile | _filter_bmap

	let off=$off+$len # skip over 1
	let off=$off+$len
done

off=0
while [ $off -le $end ]
do
	offset=${off}k
	length=${len}k
	bufsize=${len}k
	echo ""
	echo "*** offset = $offset ***"
	echo ""

	# prealloc and write
	$XFS_IO_PROG -d -c "resvsp $offset $length" -c "pwrite -b $bufsize $offset $length" $testfile | _filter_io

	# Other tests...
	#$XFS_IO_PROG -c "resvsp $offset $length" $testfile
	#xfs_bmap -v -p $testfile
	#$XFS_IO_PROG -d -c "pwrite -b $bufsize $offset $length" $testfile
	#xfs_bmap -v -p $testfile

	$XFS_IO_PROG -r -c "pread -v -b $bufsize $offset $length" $testfile >$tmp.$off &

	# Other tests...
	#$XFS_IO_PROG -r -c "pread -v -b $bufsize $offset $length" $testfile
        #sleep 5

	let off=$off+$len # skip over 1
	let off=$off+$len
done

wait
cat $tmp.* | _filter_io

# success, all done
status=0
exit