4 # Check that reflinking adjacent blocks in a file produces a single
5 # block mapping extent.
7 #-----------------------------------------------------------------------
8 # Copyright (c) 2017 Oracle, Inc. All Rights Reserved.
10 # This program is free software; you can redistribute it and/or
11 # modify it under the terms of the GNU General Public License as
12 # published by the Free Software Foundation.
14 # This program is distributed in the hope that it would be useful,
15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 # GNU General Public License for more details.
19 # You should have received a copy of the GNU General Public License
20 # along with this program; if not, write the Free Software Foundation,
21 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #-----------------------------------------------------------------------
26 seqres=$RESULT_DIR/$seq
27 echo "QA output created by $seq"
31 status=1 # failure is the default!
32 trap "_cleanup; exit \$status" 0 1 2 3 7 15
41 # get standard environment, filters and checks
46 # real QA test starts here
49 _require_scratch_reflink
50 _require_xfs_io_command "fiemap"
52 echo "Format and mount"
53 _scratch_mkfs > $seqres.full 2>&1
54 _scratch_mount >> $seqres.full 2>&1
56 testdir=$SCRATCH_MNT/test-$seq
61 sz=$((blocks * blksz))
63 echo "Create the original files"
64 $XFS_IO_PROG -f -c "falloc 0 $sz" $testdir/file1 >> $seqres.full
65 _pwrite_byte 0x61 0 $sz $testdir/file1 >> $seqres.full
66 seq 0 $blksz $((sz - blksz)) | while read offset; do
67 _reflink_range $testdir/file1 $offset $testdir/file2 $offset $blksz >> $seqres.full
71 md5sum $testdir/file1 | _filter_scratch
72 md5sum $testdir/file2 | _filter_scratch
74 echo "Check extent counts"
75 f1=$(_count_extents $testdir/file1)
76 f2=$(_count_extents $testdir/file2)
77 s1=$($XFS_IO_PROG -c 'fiemap -v' $testdir/file1 | awk '{print $5}' | grep -c '0x.*[2367aAbBfF]...$')
78 s2=$($XFS_IO_PROG -c 'fiemap -v' $testdir/file2 | awk '{print $5}' | grep -c '0x.*[2367aAbBfF]...$')
80 # Did the fs combine the extent mappings when we made f2?
81 test $f1 -eq $f2 || echo "f1 ($f1) != f2 ($f2)"
82 test $s1 -eq $s2 || echo "s1 ($s1) != s2 ($s2)"
83 test $f1 -eq $s1 || echo "f1 ($f1) != s1 ($f1)"
84 test $f2 -eq $s2 || echo "f2 ($f2) != s2 ($f2)"
88 echo "Compare files after remounting"
89 md5sum $testdir/file1 | _filter_scratch
90 md5sum $testdir/file2 | _filter_scratch
92 echo "Check extent counts"
93 f1=$(_count_extents $testdir/file1)
94 f2=$(_count_extents $testdir/file2)
95 s1=$($XFS_IO_PROG -c 'fiemap -v' $testdir/file1 | awk '{print $5}' | grep -c '0x.*[2367aAbBfF]...$')
96 s2=$($XFS_IO_PROG -c 'fiemap -v' $testdir/file2 | awk '{print $5}' | grep -c '0x.*[2367aAbBfF]...$')
98 # Are the mappings still combined?
99 test $f1 -eq $f2 || echo "f1 ($f1) != f2 ($f2)"
100 test $s1 -eq $s2 || echo "s1 ($s1) != s2 ($s2)"
101 test $f1 -eq $s1 || echo "f1 ($f1) != s1 ($f1)"
102 test $f2 -eq $s2 || echo "f2 ($f2) != s2 ($f2)"