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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2017 Oracle, Inc. All Rights Reserved.
#
# FS QA Test No. 414
#
# Check that reflinking adjacent blocks in a file produces a single
# block mapping extent.
#
. ./common/preamble
_begin_fstest auto quick clone fiemap prealloc
_register_cleanup "_cleanup" BUS
# Override the default cleanup function.
_cleanup()
{
cd /
rm -rf $tmp.*
wait
}
# Import common functions.
. ./common/filter
. ./common/reflink
# real QA test starts here
_supported_fs generic
_require_scratch_reflink
_require_xfs_io_command "falloc"
_require_xfs_io_command "fiemap"
echo "Format and mount"
_scratch_mkfs > $seqres.full 2>&1
_scratch_mount >> $seqres.full 2>&1
testdir=$SCRATCH_MNT/test-$seq
mkdir $testdir
blocks=32
blksz=65536
_require_congruent_file_oplen $SCRATCH_MNT $blksz
sz=$((blocks * blksz))
echo "Create the original files"
$XFS_IO_PROG -f -c "falloc 0 $sz" $testdir/file1 >> $seqres.full
_pwrite_byte 0x61 0 $sz $testdir/file1 >> $seqres.full
seq 0 $blksz $((sz - blksz)) | while read offset; do
_reflink_range $testdir/file1 $offset $testdir/file2 $offset $blksz >> $seqres.full
done
echo "Compare files"
md5sum $testdir/file1 | _filter_scratch
md5sum $testdir/file2 | _filter_scratch
echo "Check extent counts"
f1=$(_count_extents $testdir/file1)
f2=$(_count_extents $testdir/file2)
s1=$($XFS_IO_PROG -c 'fiemap -v' $testdir/file1 | awk '{print $5}' | grep -c '0x.*[2367aAbBfF]...$')
s2=$($XFS_IO_PROG -c 'fiemap -v' $testdir/file2 | awk '{print $5}' | grep -c '0x.*[2367aAbBfF]...$')
# Did the fs combine the extent mappings when we made f2?
test $f1 -eq $f2 || echo "f1 ($f1) != f2 ($f2)"
test $s1 -eq $s2 || echo "s1 ($s1) != s2 ($s2)"
test $f1 -eq $s1 || echo "f1 ($f1) != s1 ($f1)"
test $f2 -eq $s2 || echo "f2 ($f2) != s2 ($f2)"
_scratch_cycle_mount
echo "Compare files after remounting"
md5sum $testdir/file1 | _filter_scratch
md5sum $testdir/file2 | _filter_scratch
echo "Check extent counts"
f1=$(_count_extents $testdir/file1)
f2=$(_count_extents $testdir/file2)
s1=$($XFS_IO_PROG -c 'fiemap -v' $testdir/file1 | awk '{print $5}' | grep -c '0x.*[2367aAbBfF]...$')
s2=$($XFS_IO_PROG -c 'fiemap -v' $testdir/file2 | awk '{print $5}' | grep -c '0x.*[2367aAbBfF]...$')
# Are the mappings still combined?
test $f1 -eq $f2 || echo "f1 ($f1) != f2 ($f2)"
test $s1 -eq $s2 || echo "s1 ($s1) != s2 ($s2)"
test $f1 -eq $s1 || echo "f1 ($f1) != s1 ($f1)"
test $f2 -eq $s2 || echo "f2 ($f2) != s2 ($f2)"
# success, all done
status=0
exit
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