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
33 _require_scratch_reflink
38 echo "Format and mount"
39 _scratch_mkfs > $seqres.full 2>&1
40 _scratch_mount >> $seqres.full 2>&1
42 testdir=$SCRATCH_MNT/test-$seq
45 echo "Reformat with appropriate size"
46 blksz="$(_get_block_size $testdir)"
49 sz_bytes=$((nr_blks * 8 * blksz))
50 if [ $sz_bytes -lt $((32 * 1048576)) ]; then
51 sz_bytes=$((32 * 1048576))
53 _scratch_mkfs_sized $sz_bytes >> $seqres.full 2>&1
54 _scratch_mount >> $seqres.full 2>&1
58 echo "Create a big file and reflink it"
59 _pwrite_byte 0x61 0 $((blksz * nr_blks)) $testdir/bigfile >> $seqres.full 2>&1
60 _cp_reflink $testdir/bigfile $testdir/clonefile
63 echo "Allocate the rest of the space"
64 nr_free=$(stat -f -c '%f' $testdir)
65 _fill_fs $((blksz * nr_free)) $testdir/space $blksz 0 >> $seqres.full 2>&1
68 echo "mmap CoW the big file"
69 core_ulimit="$(ulimit -c)"
71 out="$(_mwrite_byte 0x62 0 $((blksz * nr_blks)) $((blksz * nr_blks)) $testdir/bigfile 2>&1)"
73 if [ $err -lt 128 ]; then
74 echo "mmap CoW should have failed with SIGBUS, got SIG$(kill -l $err)"
77 echo "Remount and try CoW again"
80 out="$(_mwrite_byte 0x62 0 $((blksz * nr_blks)) $((blksz * nr_blks)) $testdir/bigfile 2>&1)"
82 if [ $err -lt 128 ]; then
83 echo "mmap CoW should have failed with SIGBUS, got SIG$(kill -l $err)"
85 ulimit -c "${core_ulimit}"