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https://github.com/linux-apfs/apfstests.git
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Darrick J. Wong
0bfb84110b
Add a leading underscore to the get_block_size helper since it's a common function. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
104 lines
3.2 KiB
Bash
Executable File
104 lines
3.2 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 219
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#
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# Ensuring that copy on write in direct-io mode works when the CoW
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# range originally covers multiple extents, some holes, some not.
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# - Set cowextsize hint.
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# - Create a file and truncate a second file.
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# - Reflink the odd blocks of the first file into the second file.
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# - directio CoW across the halfway mark, starting with the unwritten extent.
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# - Check that the files are now different where we say they're different.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2016, 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.*
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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/reflink
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# real QA test starts here
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_supported_os Linux
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_require_scratch_reflink
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_require_xfs_io_command "falloc"
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_require_xfs_io_command "cowextsize"
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_require_odirect
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rm -f $seqres.full
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echo "Format and mount"
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_scratch_mkfs > $seqres.full 2>&1
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_scratch_mount >> $seqres.full 2>&1
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testdir=$SCRATCH_MNT/test-$seq
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mkdir $testdir
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echo "Create the original files"
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blksz=65536
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nr=64
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filesize=$((blksz * nr))
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real_blksz=$(_get_block_size $testdir)
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internal_blks=$((filesize / real_blksz))
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$XFS_IO_PROG -c "cowextsize $((blksz * 16))" $testdir >> $seqres.full
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_weave_reflink_holes $blksz $nr $testdir/file1 $testdir/file3 >> $seqres.full
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_scratch_cycle_mount
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echo "Compare files"
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md5sum $testdir/file1 | _filter_scratch
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md5sum $testdir/file3 | _filter_scratch
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md5sum $testdir/file3.chk | _filter_scratch
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echo "directio CoW across the transition"
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cowoff=$((filesize / 4))
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cowsz=$((filesize / 2))
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$XFS_IO_PROG -d -f -c "pwrite -S 0x63 -b $cowsz $cowoff $cowsz" $testdir/file3 >> $seqres.full
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_pwrite_byte 0x63 $cowoff $cowsz $testdir/file3.chk >> $seqres.full
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_scratch_cycle_mount
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echo "Compare files"
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md5sum $testdir/file1 | _filter_scratch
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md5sum $testdir/file3 | _filter_scratch
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md5sum $testdir/file3.chk | _filter_scratch
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echo "Check extent counts"
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old_extents=$(_count_extents $testdir/file1)
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new_extents=$(_count_extents $testdir/file3)
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echo "old extents: $old_extents" >> $seqres.full
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echo "new extents: $new_extents" >> $seqres.full
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echo "maximum extents: $internal_blks" >> $seqres.full
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test $((new_extents - (nr / 4))) -lt $((internal_blks / 2)) || echo "file3 badly fragmented"
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# success, all done
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status=0
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exit
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