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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2014, Oracle and/or its affiliates. All Rights Reserved.
#
# FS QA Test No. 111
#
# Tests file clone functionality of btrfs ("reflinks") on directory
# trees.
# - Create directory and subdirectory, each having one file
# - Create 2 recursive reflinked copies of the tree
# - Modify the original files
# - Modify one of the copies
#
. ./common/preamble
_begin_fstest auto quick clone fiemap
# Override the default cleanup function.
_cleanup()
{
cd /
rm -f $tmp.* $testdir
}
# Import common functions.
. common/filter
. common/reflink
# real QA test starts here
_require_test_reflink
_require_xfs_io_command "fiemap"
_require_cp_reflink
_require_test
testdir1=$TEST_DIR/test-$seq
rm -rf $testdir1
mkdir $testdir1
_checksum_files() {
for F in original/file1 original/subdir/file2 \
copy1/file1 copy1/subdir/file2 \
copy2/file1 copy2/subdir/file2
do
md5sum $testdir1/$F | _filter_test_dir
done
}
mkdir $testdir1/original
mkdir $testdir1/original/subdir
echo "Create the original files and reflink dirs"
$XFS_IO_PROG -f -c 'pwrite -S 0x61 0 9000' $testdir1/original/file1 \
>> $seqres.full 2>&1
$XFS_IO_PROG -f -c 'pwrite -S 0x62 0 11000' \
$testdir1/original/subdir/file2 >> $seqres.full 2>&1
cp --recursive --reflink $testdir1/original $testdir1/copy1
cp --recursive --reflink $testdir1/copy1 $testdir1/copy2
_verify_reflink $testdir1/original/file1 $testdir1/copy1/file1
_verify_reflink $testdir1/original/subdir/file2 \
$testdir1/copy1/subdir/file2
_verify_reflink $testdir1/original/file1 $testdir1/copy2/file1
_verify_reflink $testdir1/original/subdir/file2 \
$testdir1/copy2/subdir/file2
echo "Original md5sums:"
_checksum_files
echo "Overwrite original/file1 and original/subdir/file2 with new data"
$XFS_IO_PROG -c 'pwrite -S 0x63 0 13000' $testdir1/original/file1 \
>> $seqres.full 2>&1
$XFS_IO_PROG -c 'pwrite -S 0x64 5000 1000' \
$testdir1/original/subdir/file2 >> $seqres.full 2>&1
echo "md5sums now:"
_checksum_files
echo "Overwrite copy1/file1 and copy1/subdir/file2 with new data"
$XFS_IO_PROG -c 'pwrite -S 0x65 0 9000' $testdir1/copy1/file1 \
>> $seqres.full 2>&1
$XFS_IO_PROG -c 'pwrite -S 0x66 5000 25000' \
$testdir1/copy1/subdir/file2 >> $seqres.full 2>&1
echo "md5sums now:"
_checksum_files
# success, all done
status=0
exit
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