4 # Ensure that collapse-range on all copies of a file reflinked N times releases the blocks
5 # - Record fs block usage (0)
6 # - Create a file and some reflink copies
7 # - Record fs block usage (1)
8 # - Collapse-range some blocks of the copies
9 # - Record fs block usage (2)
10 # - Truncate all blocks of the copies
11 # - Compare fs block usage to (2), (1), and (0)
13 #-----------------------------------------------------------------------
14 # Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved.
16 # This program is free software; you can redistribute it and/or
17 # modify it under the terms of the GNU General Public License as
18 # published by the Free Software Foundation.
20 # This program is distributed in the hope that it would be useful,
21 # but WITHOUT ANY WARRANTY; without even the implied warranty of
22 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 # GNU General Public License for more details.
25 # You should have received a copy of the GNU General Public License
26 # along with this program; if not, write the Free Software Foundation,
27 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
28 #-----------------------------------------------------------------------
31 seqres=$RESULT_DIR/$seq
32 echo "QA output created by $seq"
36 status=1 # failure is the default!
37 trap "_cleanup; exit \$status" 0 1 2 3 15
42 rm -rf $tmp.* $testdir
45 # get standard environment, filters and checks
50 # real QA test starts here
54 _require_xfs_io_command "fcollapse"
58 testdir=$TEST_DIR/test-$seq
62 echo "Create the original file blocks"
63 blksz="$(_get_block_size $testdir)"
67 free_blocks0=$(stat -f $testdir -c '%f')
69 filesize=$((blksz * nr))
70 _pwrite_byte 0x61 0 $sz $testdir/file1 >> $seqres.full
73 echo "Create the reflink copies"
74 for i in `seq 2 $nr`; do
75 _cp_reflink $testdir/file1 $testdir/file$i
78 free_blocks1=$(stat -f $testdir -c '%f')
80 echo "Collapse most of the blocks"
81 $XFS_IO_PROG -f -c "fcollapse 0 $(((blks - 1) * blksz))" $testdir/file2
82 $XFS_IO_PROG -f -c "fcollapse 0 $((sz / 2))" $testdir/file3
83 $XFS_IO_PROG -f -c "fcollapse $((sz / 2)) $(( ((blks / 2) - 1) * blksz))" $testdir/file4
85 free_blocks2=$(stat -f $testdir -c '%f')
87 echo "Collpase nearly all the files"
88 $XFS_IO_PROG -f -c "fcollapse 0 $(( ((blks / 2) - 1) * blksz))" $testdir/file3
89 $XFS_IO_PROG -f -c "fcollapse 0 $((sz / 2))" $testdir/file4
90 $XFS_IO_PROG -f -c "fcollapse 0 $(( (blks - 1) * blksz))" $testdir/file1
92 free_blocks3=$(stat -f $testdir -c '%f')
93 #echo $free_blocks0 $free_blocks1 $free_blocks2 $free_blocks3
95 _within_tolerance "free blocks after reflink" $free_blocks1 $((free_blocks0 - blks)) $margin -v
97 _within_tolerance "free blocks after fcollapsing some reflink copies" $free_blocks2 $free_blocks1 $margin -v
99 _within_tolerance "free blocks after fcollapsing all copies" $free_blocks3 $free_blocks0 $margin -v