| 1 | #!/usr/bin/env bash |
| 2 | # group: quick |
| 3 | # |
| 4 | # Test creating raw image preallocation mode |
| 5 | # |
| 6 | # Copyright (C) 2017 Nir Soffer <nirsof@gmail.com> |
| 7 | # |
| 8 | # This program is free software; you can redistribute it and/or modify |
| 9 | # it under the terms of the GNU General Public License as published by |
| 10 | # the Free Software Foundation; either version 2 of the License, or |
| 11 | # (at your option) any later version. |
| 12 | # |
| 13 | # This program is distributed in the hope that it will be useful, |
| 14 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | # GNU General Public License for more details. |
| 17 | # |
| 18 | # You should have received a copy of the GNU General Public License |
| 19 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 20 | # |
| 21 | |
| 22 | # creator |
| 23 | owner=nirsof@gmail.com |
| 24 | |
| 25 | seq=`basename $0` |
| 26 | echo "QA output created by $seq" |
| 27 | |
| 28 | status=1 # failure is the default! |
| 29 | |
| 30 | _cleanup() |
| 31 | { |
| 32 | _cleanup_test_img |
| 33 | rm -f "$TEST_DIR/empty" |
| 34 | } |
| 35 | trap "_cleanup; exit \$status" 0 1 2 3 15 |
| 36 | |
| 37 | # Some file systems sometimes allocate extra blocks independently of |
| 38 | # the file size. This function hides the resulting difference in the |
| 39 | # stat -c '%b' output. |
| 40 | # Parameter 1: Number of blocks an empty file occupies |
| 41 | # Parameter 2: Minimal number of blocks in an image |
| 42 | # Parameter 3: Image size in bytes |
| 43 | _filter_blocks() |
| 44 | { |
| 45 | extra_blocks=$1 |
| 46 | min_blocks=$2 |
| 47 | img_size=$3 |
| 48 | |
| 49 | sed -e "s/blocks=$min_blocks\\(\$\\|[^0-9]\\)/min allocation/" \ |
| 50 | -e "s/blocks=$((extra_blocks + img_size / 512))\\(\$\\|[^0-9]\\)/max allocation/" |
| 51 | } |
| 52 | |
| 53 | # Resize image using block_resize. |
| 54 | # Parameter 1: image path |
| 55 | # Parameter 2: new size |
| 56 | _block_resize() |
| 57 | { |
| 58 | local path=$1 |
| 59 | local size=$2 |
| 60 | |
| 61 | $QEMU -qmp stdio -nographic -nodefaults \ |
| 62 | -blockdev file,node-name=file,filename=$path,cache.direct=on \ |
| 63 | <<EOF |
| 64 | {'execute': 'qmp_capabilities'} |
| 65 | {'execute': 'block_resize', 'arguments': {'node-name': 'file', 'size': $size}} |
| 66 | {'execute': 'quit'} |
| 67 | EOF |
| 68 | } |
| 69 | |
| 70 | # get standard environment, filters and checks |
| 71 | . ./common.rc |
| 72 | . ./common.filter |
| 73 | |
| 74 | _supported_fmt raw |
| 75 | _supported_proto file fuse |
| 76 | _supported_os Linux |
| 77 | |
| 78 | _default_cache_mode none |
| 79 | _supported_cache_modes none directsync |
| 80 | _require_disk_usage |
| 81 | |
| 82 | size=$((1 * 1024 * 1024)) |
| 83 | |
| 84 | touch "$TEST_DIR/empty" |
| 85 | extra_blocks=$(stat -c '%b' "$TEST_DIR/empty") |
| 86 | |
| 87 | # We always write the first byte; check how many blocks this filesystem |
| 88 | # allocates to match empty image alloation. |
| 89 | printf "\0" > "$TEST_DIR/empty" |
| 90 | min_blocks=$(stat -c '%b' "$TEST_DIR/empty") |
| 91 | |
| 92 | echo |
| 93 | echo "== creating image with default preallocation ==" |
| 94 | _make_test_img -o extent_size_hint=0 $size |
| 95 | stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size |
| 96 | |
| 97 | for mode in off full falloc; do |
| 98 | echo |
| 99 | echo "== creating image with preallocation $mode ==" |
| 100 | _make_test_img -o preallocation=$mode,extent_size_hint=0 $size |
| 101 | stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size |
| 102 | done |
| 103 | |
| 104 | for new_size in 4096 1048576; do |
| 105 | echo |
| 106 | echo "== resize empty image with block_resize ==" |
| 107 | _make_test_img -o extent_size_hint=0 0 |
| 108 | _block_resize $TEST_IMG $new_size >/dev/null |
| 109 | stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $new_size |
| 110 | done |
| 111 | |
| 112 | # success, all done |
| 113 | echo "*** done" |
| 114 | rm -f $seq.full |
| 115 | status=0 |