#! /bin/bash
# FS QA Test No. 069
#
# Determine whether the extent size hint can be set on directories
# with allocated extents correctly.
#
#-----------------------------------------------------------------------
# Copyright (c) 2014 Google 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`
tmp=/tmp/$$
status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

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

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

# real QA test starts here

# Modify as appropriate.
_supported_fs xfs
_supported_os Linux
_require_scratch

_scratch_mkfs_xfs >/dev/null 2>&1
_scratch_mount

small=$SCRATCH_MNT/small
big=$SCRATCH_MNT/big

# sanity check on a small directory
mkdir $small
# expect that an empty directory has no extents
$XFS_IO_PROG -c "bmap" $small | _filter_scratch
# and that we can set an extent size on it
$XFS_IO_PROG -c 'extsize 8m' $small
# and finally check that the extent size update has taken place
$XFS_IO_PROG -c "extsize" $small | _filter_scratch

# now create a 'big' (with extents) directory
mkdir $big
for idx in {0..1000}; do
    touch $big/$idx
done
$XFS_IO_PROG -c 'bmap -vp' $big | _filter_bmap | \
    grep -q '^0: .*data'
[ $? -eq 0 ] || echo "Can't force allocating extents!" 1>&2

# expect that we can set the extent size on $big as well
$XFS_IO_PROG -c 'extsize 8m' $big | _filter_scratch
# and that it took effect
$XFS_IO_PROG -c 'extsize' $big | _filter_scratch

# success, all done
status=0
exit