mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Goldwyn Rodrigues
6a2fd57fb8
Tests the RWF_NOWAIT flag so the I/O returns immediately with -EAGAIN on a new file since it requires block allocation. It creates a file, syncs it, and overwrites the file with RWF_NOWAIT. This should succeed. Finally, read the contents to make sure the overwrite is successful. Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
76 lines
2.4 KiB
Bash
Executable File
76 lines
2.4 KiB
Bash
Executable File
#! /bin/bash
|
|
# FS QA Test No. 471
|
|
#
|
|
# write a file with RWF_NOWAIT and it would fail because there are no
|
|
# blocks allocated. Create a file with direct I/O and re-write it
|
|
# using RWF_NOWAIT. I/O should finish within 50 microsecods since
|
|
# block allocations are already performed.
|
|
#
|
|
#-----------------------------------------------------------------------
|
|
# Copyright (c) 2017, SUSE Linux Products. 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!
|
|
|
|
# get standard environment, filters and checks
|
|
. ./common/rc
|
|
. ./common/populate
|
|
. ./common/filter
|
|
. ./common/attr
|
|
|
|
# real QA test starts here
|
|
_supported_os Linux
|
|
_require_odirect
|
|
_require_test
|
|
_require_xfs_io_command pwrite -N
|
|
|
|
# Remove reminiscence of previously run tests
|
|
testdir=$TEST_DIR/$seq
|
|
if [ -e $testdir ]; then
|
|
rm -Rf $testdir
|
|
fi
|
|
|
|
mkdir $testdir
|
|
|
|
# Create a file with pwrite nowait (will fail with EAGAIN)
|
|
$XFS_IO_PROG -f -d -c "pwrite -N -V 1 -b 1M 0 1M" $testdir/f1
|
|
|
|
# Write the file without nowait
|
|
$XFS_IO_PROG -f -d -c "pwrite -S 0xaa -W -w -V 1 -b 1M 0 8M" $testdir/f1 | _filter_xfs_io
|
|
|
|
time_taken=`$XFS_IO_PROG -d -c "pwrite -S 0xbb -N -V 1 -b 1M 2M 1M" $testdir/f1 | awk '/^1/ {print $5}'`
|
|
|
|
# RWF_NOWAIT should finish within a short period of time so we are choosing
|
|
# a conservative value of 50 ms. Anything longer means it is waiting
|
|
# for something in the kernel which would be a fail.
|
|
if (( $(echo "$time_taken < 0.05" | bc -l) )); then
|
|
echo "RWF_NOWAIT time is within limits."
|
|
else
|
|
echo "RWF_NOWAIT took $time_taken seconds"
|
|
fi
|
|
|
|
$XFS_IO_PROG -c "pread -v 0 8M" $testdir/f1 | _filter_xfs_io_unique
|
|
|
|
# success, all done
|
|
status=0
|
|
exit
|