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https://github.com/linux-apfs/apfstests.git
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76 lines
2.4 KiB
Bash
76 lines
2.4 KiB
Bash
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#! /bin/bash
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# FS QA Test No. 471
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#
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# write a file with RWF_NOWAIT and it would fail because there are no
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# blocks allocated. Create a file with direct I/O and re-write it
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# using RWF_NOWAIT. I/O should finish within 50 microsecods since
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# block allocations are already performed.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2017, SUSE Linux Products. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/populate
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. ./common/filter
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. ./common/attr
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# real QA test starts here
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_supported_os Linux
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_require_odirect
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_require_test
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_require_xfs_io_command pwrite -N
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# Remove reminiscence of previously run tests
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testdir=$TEST_DIR/$seq
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if [ -e $testdir ]; then
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rm -Rf $testdir
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fi
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mkdir $testdir
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# Create a file with pwrite nowait (will fail with EAGAIN)
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$XFS_IO_PROG -f -d -c "pwrite -N -V 1 -b 1M 0 1M" $testdir/f1
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# Write the file without nowait
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$XFS_IO_PROG -f -d -c "pwrite -S 0xaa -W -w -V 1 -b 1M 0 8M" $testdir/f1 | _filter_xfs_io
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time_taken=`$XFS_IO_PROG -d -c "pwrite -S 0xbb -N -V 1 -b 1M 2M 1M" $testdir/f1 | awk '/^1/ {print $5}'`
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# RWF_NOWAIT should finish within a short period of time so we are choosing
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# a conservative value of 50 ms. Anything longer means it is waiting
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# for something in the kernel which would be a fail.
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if (( $(echo "$time_taken < 0.05" | bc -l) )); then
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echo "RWF_NOWAIT time is within limits."
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else
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echo "RWF_NOWAIT took $time_taken seconds"
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fi
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$XFS_IO_PROG -c "pread -v 0 8M" $testdir/f1 | _filter_xfs_io_unique
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# success, all done
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status=0
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exit
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