#! /bin/bash
# FS QA Test No. 286
#
# SEEK_DATA/SEEK_HOLE copy tests.
#
#-----------------------------------------------------------------------
# Copyright (c) 2011 Oracle 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"

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

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

# real QA test starts here
_supported_fs generic
_supported_os Linux

_require_test
_require_seek_data_hole

src=$TEST_DIR/seek_copy_testfile
dest=$TEST_DIR/seek_copy_testfile.dest

_require_test_program "seek_copy_test"

_cleanup()
{
	rm -f $src $dest
}

# seek_copy_test_01: tests file with holes and written data extents.
# verify results:
# 1. file size is identical.
# 2. perform cmp(1) to compare SRC and DEST file byte by byte.
test01()
{
	rm -f $src $dest

	write_cmd="-c \"truncate 100m\""
	for i in $(seq 0 5 100); do
		offset=$(($i * $((1 << 20))))
		write_cmd="$write_cmd -c \"pwrite $offset 1m\""
	done

	echo "*** test01() create sparse file ***" >>$seqres.full
	eval ${XFS_IO_PROG} -f "${write_cmd}" $src >>$seqres.full 2>&1 ||
		_fail "create sparse file failed!"
	echo "*** test01() create sparse file done ***" >>$seqres.full
	echo >>$seqres.full

	$here/src/seek_copy_test $src $dest
	
	test $(stat -c "%s" $src) = $(stat -c "%s" $dest) ||
		_fail "TEST01: file size check failed"

	cmp $src $dest || _fail "TEST01: file bytes check failed"
}

# seek_copy_test_02 - tests file with holes, written and unwritten extents.
# verify results:
# 1. file size is identical.
# 2. perform cmp(1) to compare SRC and DEST file byte by byte.
test02()
{
	rm -rf $src $dest

	write_cmd="-c \"truncate 200m\""
	for i in $(seq 0 10 100); do
		offset=$(($((6 << 20)) + $i * $((1 << 20))))
		write_cmd="$write_cmd -c \"falloc $offset 3m\" -c \"pwrite $offset 1m\""
	done

	echo "*** test02() create sparse file ***" >>$seqres.full
	eval ${XFS_IO_PROG} -f "${write_cmd}" $src >>$seqres.full 2>&1 ||
		_fail "create sparse file failed!"
	echo "*** test02() create sparse file done ***" >>$seqres.full
	echo >>$seqres.full

	$here/src/seek_copy_test $src $dest

	test $(stat -c "%s" $src) = $(stat -c "%s" $dest) ||
		_fail "TEST02: file size check failed"

	cmp $src $dest || _fail "TEST02: file bytes check failed"
}

# seek_copy_test_03 - tests file with unwritten with data, repeated unwritten
# without data, as well as data extents mapping.
# verify results:
# 1. file size is identical.
# 2. perform cmp(1) to compare SRC and DEST file byte by byte.
test03()
{
	rm -rf $src $dest

	write_cmd="-c \"truncate 200m\""

	#
	# Firstly, make the file with allocated && reserved extents
	# mapping without real data wrote.
	#
	for i in $(seq 0 10 180); do
		offset=$(($((10 << 20)) + $i * $((1 << 20))))
		write_cmd="$write_cmd -c \"falloc $offset 10m\""
	done

	#
	# Secondly, write data to some unwritten extents, hence we
	# have a test file will extents mapping as:
	# |data|multiple unwritten_without_data|data| repeat...
	for i in $(seq 0 60 180); do
		offset=$(($((20 << 20)) + $i * $((1 << 20))))
		write_cmd="$write_cmd -c \"pwrite $offset 10m\""
	done

	echo "*** test03() create sparse file ***" >>$seqres.full
	eval ${XFS_IO_PROG} -f "${write_cmd}" $src >>$seqres.full 2>&1 ||
		_fail "create sparse file failed!"
	echo "*** test03() create sparse file done ***" >>$seqres.full
	echo >>$seqres.full
	$here/src/seek_copy_test $src $dest

	test $(stat -c "%s" $src) = $(stat -c "%s" $dest) ||
		_fail "TEST03: file size check failed"

	cmp $src $dest || _fail "TEST03: file bytes check failed"
}

# seek_copy_test_04 - tests file with hole, repeated unwritten
# without data, as well as data extents mapping.
# verify results:
# 1. file size is identical.
# 2. perform cmp(1) to compare SRC and DEST file byte by byte.
test04()
{
	rm -rf $src $dest

	write_cmd="-c \"truncate 200m\""

	#
	# Firstly, make the file with allocated && reserved extents
	# mapping without real data wrote.
	#
	for i in $(seq 30 30 180); do
		offset=$(($((30 << 20)) + $i * $((1 << 20))))
		write_cmd="$write_cmd -c \"falloc $offset 5m\""
	done

	#
	# Secondly, write data to some unwritten extents, hence we
	# have a test file will extents mapping as:
	# |hole|multiple unwritten_without_data|hole|data| repeat...
	for i in $(seq 30 90 180); do
		offset=$(($((30 << 20)) + $i * $((1 << 20))))
		write_cmd="$write_cmd -c \"pwrite $offset 2m\""
	done

	echo "*** test04() create sparse file ***" >>$seqres.full
	eval ${XFS_IO_PROG} -f "${write_cmd}" $src >>$seqres.full 2>&1 ||
		_fail "create sparse file failed!"
	echo "*** test04() create sparse file done ***" >>$seqres.full
	echo >>$seqres.full
	$here/src/seek_copy_test $src $dest

	test $(stat -c "%s" $src) = $(stat -c "%s" $dest) ||
		_fail "TEST04: file size check failed"

	cmp $src $dest || _fail "TEST04: file bytes check failed"
}

rm -f $seqres.full
test01
test02
test03
test04

status=0
exit
