2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved.
7 # Ensure that deleting 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 # - Delete some copies of the file
12 # - Record fs block usage (2)
13 # - Delete all copies of the file
14 # - Compare fs block usage to (2), (1), and (0)
17 _begin_fstest auto quick clone
19 # Override the default cleanup function.
23 rm -rf $tmp.* $testdir
26 # Import common functions.
30 # real QA test starts here
34 testdir=$TEST_DIR/test-$seq
38 echo "Create the original file blocks"
39 blksz="$(_get_block_size $testdir)"
43 free_blocks0=$(stat -f $testdir -c '%f')
45 filesize=$((blksz * nr))
46 _pwrite_byte 0x61 0 $sz $testdir/file1 >> $seqres.full
49 echo "Create the reflink copies"
50 for i in `seq 2 $nr`; do
51 _cp_reflink $testdir/file1 $testdir/file.$i
53 _cp_reflink $testdir/file1 $testdir/survivor
55 free_blocks1=$(stat -f $testdir -c '%f')
57 echo "Delete most of the files"
60 free_blocks2=$(stat -f $testdir -c '%f')
62 echo "Delete all the files"
65 free_blocks3=$(stat -f $testdir -c '%f')
66 #echo $free_blocks0 $free_blocks1 $free_blocks2 $free_blocks3
68 _within_tolerance "free blocks after reflink" $free_blocks1 $((free_blocks0 - blks)) $margin -v
70 _within_tolerance "free blocks after deleting some reflink copies" $free_blocks2 $free_blocks1 $margin -v
72 _within_tolerance "free blocks after deleting all copies" $free_blocks3 $free_blocks0 $margin -v