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https://github.com/linux-apfs/apfstests.git
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Darrick J. Wong
2616587012
Fix style problems such as unnecessary use of quotes, add helper variables to reduce visual clutter, and other minor fixes to make the first batch of tests more closely resemble the second round tests. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
132 lines
4.0 KiB
Bash
Executable File
132 lines
4.0 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 132
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#
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# Ensure that fallocate on reflinked files actually CoWs the shared blocks.
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# - Record fs block usage (0)
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# - Create a file and some reflink copies
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# - Record fs block usage (1)
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# - funshare half of one of the copies
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# - Record fs block usage (2)
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# - funshare all of the copies
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# - Record fs block usage (3)
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# - rewrite the original file
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# - Record fs block usage (4)
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# - Compare fs block usage of 0-4 to ensure that block usage behaves as
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# we expect.
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# - Compare the status of the inode reflink flag at each step.
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#
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# "funshare" refers to fallocate copy-on-writing the shared blocks
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#
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# This is the same test as generic/156 except that we also check the inode
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# reflink flag.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2015, Oracle and/or its affiliates. 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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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -rf $tmp.* $testdir
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}
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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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. ./common/attr
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. ./common/reflink
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# real QA test starts here
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_supported_os Linux
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_require_test_reflink
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_require_test_lsattr
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_require_cp_reflink
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_require_xfs_io_command "falloc"
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rm -f $seqres.full
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testdir=$TEST_DIR/test-$seq
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rm -rf $testdir
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mkdir $testdir
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echo "Create the original file blocks"
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blksz="$(stat -f $testdir -c '%S')"
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blks=2000
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margin=100
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sz=$((blksz * blks))
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free_blocks0=$(stat -f $testdir -c '%f')
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nr=4
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filesize=$((blksz * nr))
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_pwrite_byte 0x61 0 $sz $testdir/file1 >> $seqres.full
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_test_remount
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echo "Create the reflink copies"
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for i in `seq 2 $nr`; do
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_cp_reflink $testdir/file1 $testdir/file$i
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done
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_test_remount
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free_blocks1=$(stat -f $testdir -c '%f')
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lsattr -l $testdir/ | _filter_test_dir | _filter_spaces
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echo "funshare part of a file"
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$XFS_IO_PROG -f -c "falloc 0 $((sz / 2))" $testdir/file2
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_test_remount
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lsattr -l $testdir/ | _filter_test_dir | _filter_spaces
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echo "funshare some of the copies"
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$XFS_IO_PROG -f -c "falloc 0 $sz" $testdir/file2
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$XFS_IO_PROG -f -c "falloc 0 $sz" $testdir/file3
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_test_remount
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free_blocks2=$(stat -f $testdir -c '%f')
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lsattr -l $testdir/ | _filter_test_dir | _filter_spaces
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echo "funshare the rest of the files"
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$XFS_IO_PROG -f -c "falloc 0 $sz" $testdir/file4
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$XFS_IO_PROG -f -c "falloc 0 $sz" $testdir/file1
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_test_remount
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free_blocks3=$(stat -f $testdir -c '%f')
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lsattr -l $testdir/ | _filter_test_dir | _filter_spaces
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echo "Rewrite the original file"
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_pwrite_byte 0x65 0 $sz $testdir/file1 >> $seqres.full
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_test_remount
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free_blocks4=$(stat -f $testdir -c '%f')
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lsattr -l $testdir/ | _filter_test_dir | _filter_spaces
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#echo $free_blocks0 $free_blocks1 $free_blocks2 $free_blocks3 $free_blocks4
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_within_tolerance "free blocks after reflinking" $free_blocks1 $((free_blocks0 - blks)) $margin -v
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_within_tolerance "free blocks after nocow'ing some copies" $free_blocks2 $((free_blocks1 - (2 * blks))) $margin -v
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_within_tolerance "free blocks after nocow'ing all copies" $free_blocks3 $((free_blocks2 - blks)) $margin -v
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_within_tolerance "free blocks after overwriting original" $free_blocks4 $free_blocks3 $margin -v
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_within_tolerance "free blocks after all tests" $free_blocks4 $((free_blocks0 - (4 * blks))) $margin -v
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# success, all done
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status=0
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exit
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