2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved.
7 # Ensure that punching all copies of a file reflinked N times releases the blocks
8 # - Record fs block usage (0)
9 # - Create a file and some reflink copies
10 # - Record fs block usage (1)
11 # - Punch some blocks of the copies
12 # - Record fs block usage (2)
13 # - Punch all blocks of the copies
14 # - Compare fs block usage to (2), (1), and (0)
17 seqres=$RESULT_DIR/$seq
18 echo "QA output created by $seq"
22 status=1 # failure is the default!
23 trap "_cleanup; exit \$status" 0 1 2 3 15
28 rm -rf $tmp.* $testdir
31 # get standard environment, filters and checks
36 # real QA test starts here
39 _require_xfs_io_command "fpunch"
43 testdir=$TEST_DIR/test-$seq
47 echo "Create the original file blocks"
48 blksz="$(_get_block_size $testdir)"
52 free_blocks0=$(stat -f $testdir -c '%f')
54 filesize=$((blksz * nr))
55 _pwrite_byte 0x61 0 $sz $testdir/file1 >> $seqres.full
58 echo "Create the reflink copies"
59 for i in `seq 2 $nr`; do
60 _cp_reflink $testdir/file1 $testdir/file$i
63 free_blocks1=$(stat -f $testdir -c '%f')
65 echo "Punch most of the blocks"
66 $XFS_IO_PROG -f -c "fpunch 0 $sz" $testdir/file2
67 $XFS_IO_PROG -f -c "fpunch 0 $((sz / 2))" $testdir/file3
68 $XFS_IO_PROG -f -c "fpunch $((sz / 2)) $((sz / 2))" $testdir/file4
70 free_blocks2=$(stat -f $testdir -c '%f')
72 echo "Punch all the files"
73 for i in `seq 2 $nr`; do
74 $XFS_IO_PROG -f -c "fpunch 0 $sz" $testdir/file$i
76 $XFS_IO_PROG -f -c "fpunch 0 $sz" $testdir/file1
78 free_blocks3=$(stat -f $testdir -c '%f')
79 #echo $free_blocks0 $free_blocks1 $free_blocks2 $free_blocks3
81 _within_tolerance "free blocks after reflink" $free_blocks1 $((free_blocks0 - blks)) $margin -v
83 _within_tolerance "free blocks after punching some reflink copies" $free_blocks2 $free_blocks1 $margin -v
85 _within_tolerance "free blocks after punching all copies" $free_blocks3 $free_blocks0 $margin -v