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apfstests/tests/generic/420
T
Ilya Dryomov af04d7247f generic/420: truncate testfile before executing the test
If generic/437 is run before generic/420, the latter fails with:

  4c4
  < stat.size = 2048
  ---
  > stat.size = 2097152

because both use $TEST_DIR/testfile.  generic/437 leaves it at 2M,
while generic/420 assumes that it is empty (or at least smaller than
2048 bytes).

Use a private test file (testfile.$seq) and truncate it on open just in
case.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
2017-08-27 22:52:26 +08:00

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#! /bin/bash
# FS QA Test 420
#
# Verify fallocate(mode=FALLOC_FL_KEEP_SIZE|FALLOC_FL_PUNCH_HOLE) does
# not alter the file size.
#
#-----------------------------------------------------------------------
# Copyright (c) 2017 Calvin Owens. 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
# remove previous $seqres.full before test
rm -f $seqres.full
# real QA test starts here
# Modify as appropriate.
_supported_fs generic
_supported_os Linux
_require_test
_require_xfs_io_command fpunch
testfile="${TEST_DIR}/testfile.$seq"
echo "Testing fallocate(mode=FALLOC_FL_KEEP_SIZE|FALLOC_FL_PUNCH_HOLE)"
$XFS_IO_PROG -f -t -c "pwrite -b 2048 0 2048" $testfile | head -n1
# fpunch from xfs_io has KEEP_SIZE flag set
$XFS_IO_PROG -c "fpunch 2048 2048" $testfile
$XFS_IO_PROG -c "stat" $testfile | grep -F 'stat.size'
# success, all done
status=0
exit