#! /bin/bash
# FS QA Test No. 207
#
# Test setting the extsz and cowextsz hints:
# - Ensure that we can set both on a zero-byte file.
# - Ensure that we can set only cowextsz on a many-byte file.
# - Ensure that whatever we set we get back later.
#
#-----------------------------------------------------------------------
# Copyright (c) 2016, Oracle and/or its affiliates.  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`
tmp=/tmp/$$
status=1    # failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

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

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

# real QA test starts here
_supported_os Linux
_supported_fs xfs
_require_scratch_reflink
_require_cp_reflink
_require_fiemap
_require_xfs_io_command "cowextsize"

rm -f $seqres.full

echo "Format and mount"
_scratch_mkfs > $seqres.full 2>&1
_scratch_mount >> $seqres.full 2>&1

testdir=$SCRATCH_MNT/test-$seq
mkdir $testdir

echo "Create the original files"
$XFS_IO_PROG -f -c "pwrite -S 0x61 0 0" $testdir/file1 >> $seqres.full
$XFS_IO_PROG -f -c "pwrite -S 0x61 0 1048576" $testdir/file2 >> $seqres.full
$XFS_IO_PROG -f -c "pwrite -S 0x61 0 0" $testdir/file3 >> $seqres.full
_scratch_cycle_mount

echo "Set extsz and cowextsz on zero byte file"
$XFS_IO_PROG -c "extsize 1048576" $testdir/file1 | _filter_scratch
$XFS_IO_PROG -c "cowextsize 1048576" $testdir/file1 | _filter_scratch

echo "Set extsz and cowextsz on 1Mbyte file"
$XFS_IO_PROG -c "extsize 1048576" $testdir/file2 | _filter_scratch
$XFS_IO_PROG -c "cowextsize 1048576" $testdir/file2 | _filter_scratch
_scratch_cycle_mount

echo "Check extsz and cowextsz settings on zero byte file"
$XFS_IO_PROG -c "extsize" $testdir/file1 | _filter_scratch
$XFS_IO_PROG -c "cowextsize" $testdir/file1 | _filter_scratch

echo "Check extsz and cowextsz settings on 1Mbyte file"
$XFS_IO_PROG -c "extsize" $testdir/file2 | _filter_scratch
$XFS_IO_PROG -c "cowextsize" $testdir/file2 | _filter_scratch

echo "Set cowextsize and check flag"
$XFS_IO_PROG -c "cowextsize 1048576" $testdir/file3 | _filter_scratch
_scratch_cycle_mount

$XFS_IO_PROG -c "stat" $testdir/file3 | grep 'fsxattr.xflags' | _filter_scratch
$XFS_IO_PROG -c "cowextsize" $testdir/file3 | _filter_scratch

echo "Unset cowextsize and check flag"
$XFS_IO_PROG -c "cowextsize 0" $testdir/file3 | _filter_scratch
_scratch_cycle_mount

$XFS_IO_PROG -c "stat" $testdir/file3 | grep 'fsxattr.xflags' | _filter_scratch
$XFS_IO_PROG -c "cowextsize" $testdir/file3 | _filter_scratch

status=0
exit
