| 1 | #!/usr/bin/env bash |
| 2 | # group: rw auto backing quick |
| 3 | # |
| 4 | # Test COW from backing files |
| 5 | # |
| 6 | # Copyright (C) 2012 Red Hat, Inc. |
| 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=kwolf@redhat.com |
| 24 | |
| 25 | seq=`basename $0` |
| 26 | echo "QA output created by $seq" |
| 27 | |
| 28 | status=1 # failure is the default! |
| 29 | |
| 30 | _cleanup() |
| 31 | { |
| 32 | _cleanup_test_img |
| 33 | } |
| 34 | trap "_cleanup; exit \$status" 0 1 2 3 15 |
| 35 | |
| 36 | # get standard environment, filters and checks |
| 37 | . ./common.rc |
| 38 | . ./common.filter |
| 39 | |
| 40 | _supported_fmt qcow qcow2 vmdk qed |
| 41 | _supported_proto file fuse |
| 42 | _unsupported_imgopts "subformat=monolithicFlat" \ |
| 43 | "subformat=twoGbMaxExtentFlat" \ |
| 44 | "subformat=twoGbMaxExtentSparse" \ |
| 45 | "subformat=streamOptimized" |
| 46 | |
| 47 | CLUSTER_SIZE=4k |
| 48 | size=128M |
| 49 | |
| 50 | echo |
| 51 | echo "== creating backing file for COW tests ==" |
| 52 | |
| 53 | TEST_IMG_SAVE="$TEST_IMG" |
| 54 | TEST_IMG="$TEST_IMG.base" |
| 55 | |
| 56 | _make_test_img $size |
| 57 | |
| 58 | backing_io() |
| 59 | { |
| 60 | local offset=$1 |
| 61 | local sectors=$2 |
| 62 | local op=$3 |
| 63 | local pattern=0 |
| 64 | local cur_sec=0 |
| 65 | |
| 66 | for ((i=0;i<=$((sectors - 1));i++)); do |
| 67 | cur_sec=$((offset / 512 + i)) |
| 68 | pattern=$(( ( (cur_sec % 256) + (cur_sec / 256)) % 256 )) |
| 69 | |
| 70 | echo "$op -P $pattern $((cur_sec * 512)) 512" |
| 71 | done |
| 72 | } |
| 73 | |
| 74 | backing_io 0 256 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |
| 75 | |
| 76 | TEST_IMG="$TEST_IMG_SAVE" |
| 77 | |
| 78 | _make_test_img -b "$TEST_IMG.base" -F $IMGFMT 6G |
| 79 | |
| 80 | echo |
| 81 | echo "== COW in a single cluster ==" |
| 82 | $QEMU_IO -c "write -P 0x77 0 2k" "$TEST_IMG" | _filter_qemu_io |
| 83 | $QEMU_IO -c "write -P 0x88 6k 2k" "$TEST_IMG" | _filter_qemu_io |
| 84 | $QEMU_IO -c "write -P 0x99 9k 2k" "$TEST_IMG" | _filter_qemu_io |
| 85 | |
| 86 | $QEMU_IO -c "read -P 0x77 0 2k" "$TEST_IMG" | _filter_qemu_io |
| 87 | backing_io $((2 * 1024)) 8 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |
| 88 | $QEMU_IO -c "read -P 0x88 6k 2k" "$TEST_IMG" | _filter_qemu_io |
| 89 | backing_io $((8 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |
| 90 | $QEMU_IO -c "read -P 0x99 9k 2k" "$TEST_IMG" | _filter_qemu_io |
| 91 | backing_io $((11 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |
| 92 | |
| 93 | echo |
| 94 | echo "== COW in two-cluster allocations ==" |
| 95 | $QEMU_IO -c "write -P 0x77 16k 6k" "$TEST_IMG" | _filter_qemu_io |
| 96 | $QEMU_IO -c "write -P 0x88 26k 6k" "$TEST_IMG" | _filter_qemu_io |
| 97 | $QEMU_IO -c "write -P 0x99 33k 5k" "$TEST_IMG" | _filter_qemu_io |
| 98 | |
| 99 | $QEMU_IO -c "read -P 0x77 16k 6k" "$TEST_IMG" | _filter_qemu_io |
| 100 | backing_io $((22 * 1024)) 8 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |
| 101 | $QEMU_IO -c "read -P 0x88 26k 6k" "$TEST_IMG" | _filter_qemu_io |
| 102 | backing_io $((32 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |
| 103 | $QEMU_IO -c "read -P 0x99 33k 5k" "$TEST_IMG" | _filter_qemu_io |
| 104 | backing_io $((38 * 1024)) 4 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |
| 105 | |
| 106 | echo |
| 107 | echo "== COW in multi-cluster allocations ==" |
| 108 | $QEMU_IO -c "write -P 0x77 48k 15k" "$TEST_IMG" | _filter_qemu_io |
| 109 | $QEMU_IO -c "write -P 0x88 66k 14k" "$TEST_IMG" | _filter_qemu_io |
| 110 | $QEMU_IO -c "write -P 0x99 83k 15k" "$TEST_IMG" | _filter_qemu_io |
| 111 | |
| 112 | $QEMU_IO -c "read -P 0x77 48k 15k" "$TEST_IMG" | _filter_qemu_io |
| 113 | backing_io $((63 * 1024)) 6 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |
| 114 | $QEMU_IO -c "read -P 0x88 66k 14k" "$TEST_IMG" | _filter_qemu_io |
| 115 | backing_io $((80 * 1024)) 6 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |
| 116 | $QEMU_IO -c "read -P 0x99 83k 15k" "$TEST_IMG" | _filter_qemu_io |
| 117 | backing_io $((98 * 1024)) 4 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |
| 118 | |
| 119 | _check_test_img |
| 120 | |
| 121 | # success, all done |
| 122 | echo "*** done" |
| 123 | rm -f $seq.full |
| 124 | status=0 |