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https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Dave Chinner
815637a2da
Many of the "count-the-holes" tests (008, 012, etc) do writes that extend the file and hence allocation patterns are dependent on speculative allocation beyond EOF behaviour. Hence if we change that behaviour, these tests all fail because there is a different pattern of holes. Make the tests independent of EOF preallocation behaviour by first truncating the file to the size the test is defined to use. This prevents speculative prealocation from occurring, and hence changes in such behaviour will not cause the tests to fail. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
90 lines
2.1 KiB
Bash
Executable File
90 lines
2.1 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 203
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#
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# Test out reallocation of the extent array in xfs_io.
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# Based on a testcase from Tomasz Majkowski <moosh009@gmail.com>.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2009 Christoph Hellwig.
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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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#
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# creator
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owner=hch@lst.de
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seq=`basename $0`
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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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_write_holes()
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{
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file=$1
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holes=$2
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let writes=$holes+1
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let fsize=$(($writes * 0x100000))
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# prevent EOF preallocation from affecting results
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xfs_io -f $file -c "truncate $fsize"
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offset=0
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for i in `seq 0 $writes`; do
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xfs_io -f $file -c "pwrite -q $offset 1"
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let offset=$offset+0x100000
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done
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}
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# 0: [0..7]: 104..111
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# 1: [8..2047]: hole
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_filter_bmap()
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{
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_filter_test_dir |
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awk '$3 ~ /hole/ { print $1, $2, $3; next }
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{print $1, $2; next}'
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}
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_cleanup()
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{
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rm -f $TEST_DIR/hole_file*
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rm -f $TEST_DIR/r??
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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# real QA test starts here
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_supported_fs xfs
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_supported_os Linux
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for i in 10 14 15 16 17 28 29 30 31; do
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rm -f $TEST_DIR/hole_file
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_write_holes $TEST_DIR/hole_file${i} ${i}
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done
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for i in 10 14 15 16 17 28 29 30 31; do
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xfs_bmap $TEST_DIR/hole_file${i} | _filter_bmap
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echo
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done
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# success, all done
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echo "*** done"
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rm -f $seq.full
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status=0
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