mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Darrick J. Wong
f1c3fee1ca
Since XFS dropped support for the NOCOW_FL flag, cut it out of the tests. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>
127 lines
3.8 KiB
Bash
Executable File
127 lines
3.8 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_cycle_mount
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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_cycle_mount
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free_blocks1=$(stat -f $testdir -c '%f')
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echo "funshare part of a file"
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$XFS_IO_PROG -f -c "falloc 0 $((sz / 2))" $testdir/file2
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_test_cycle_mount
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echo "funshare some of the copies"
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$XFS_IO_PROG -f -c "falloc 0 $sz" $testdir/file2
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$XFS_IO_PROG -f -c "falloc 0 $sz" $testdir/file3
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_test_cycle_mount
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free_blocks2=$(stat -f $testdir -c '%f')
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echo "funshare the rest of the files"
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$XFS_IO_PROG -f -c "falloc 0 $sz" $testdir/file4
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$XFS_IO_PROG -f -c "falloc 0 $sz" $testdir/file1
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_test_cycle_mount
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free_blocks3=$(stat -f $testdir -c '%f')
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echo "Rewrite the original file"
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_pwrite_byte 0x65 0 $sz $testdir/file1 >> $seqres.full
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_test_cycle_mount
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free_blocks4=$(stat -f $testdir -c '%f')
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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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