| #! /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 |