2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved.
7 # Reflink a file, use up the rest of the space, then try to observe ENOSPC
8 # while copy-on-writing the file via mmap.
11 seqres=$RESULT_DIR/$seq
12 echo "QA output created by $seq"
16 status=1 # failure is the default!
17 trap "_cleanup; exit \$status" 0 1 2 3 15
22 rm -rf $tmp.* $testdir1
25 # get standard environment, filters and checks
32 # real QA test starts here
34 _require_scratch_reflink
39 echo "Format and mount"
40 _scratch_mkfs > $seqres.full 2>&1
41 _scratch_mount >> $seqres.full 2>&1
43 testdir=$SCRATCH_MNT/test-$seq
46 echo "Reformat with appropriate size"
47 blksz="$(_get_block_size $testdir)"
50 sz_bytes=$((nr_blks * 8 * blksz))
51 if [ $sz_bytes -lt $((32 * 1048576)) ]; then
52 sz_bytes=$((32 * 1048576))
54 _scratch_mkfs_sized $sz_bytes >> $seqres.full 2>&1
55 _scratch_mount >> $seqres.full 2>&1
59 echo "Create a big file and reflink it"
60 _pwrite_byte 0x61 0 $((blksz * nr_blks)) $testdir/bigfile >> $seqres.full 2>&1
61 _cp_reflink $testdir/bigfile $testdir/clonefile
64 echo "Allocate the rest of the space"
65 nr_free=$(stat -f -c '%f' $testdir)
66 _fill_fs $((blksz * nr_free)) $testdir/space $blksz 0 >> $seqres.full 2>&1
69 echo "mmap CoW the big file"
70 core_ulimit="$(ulimit -c)"
72 out="$(_mwrite_byte 0x62 0 $((blksz * nr_blks)) $((blksz * nr_blks)) $testdir/bigfile 2>&1)"
74 if [ $err -lt 128 ]; then
75 echo "mmap CoW should have failed with SIGBUS, got SIG$(kill -l $err)"
78 echo "Remount and try CoW again"
81 out="$(_mwrite_byte 0x62 0 $((blksz * nr_blks)) $((blksz * nr_blks)) $testdir/bigfile 2>&1)"
83 if [ $err -lt 128 ]; then
84 echo "mmap CoW should have failed with SIGBUS, got SIG$(kill -l $err)"
86 ulimit -c "${core_ulimit}"