| 1 | #!/usr/bin/env bash |
| 2 | # group: rw quick |
| 3 | # |
| 4 | # Test qemu-img vs. unaligned images; O_DIRECT version |
| 5 | # (Originates from 221) |
| 6 | # |
| 7 | # Copyright (C) 2019 Red Hat, Inc. |
| 8 | # |
| 9 | # This program is free software; you can redistribute it and/or modify |
| 10 | # it under the terms of the GNU General Public License as published by |
| 11 | # the Free Software Foundation; either version 2 of the License, or |
| 12 | # (at your option) any later version. |
| 13 | # |
| 14 | # This program is distributed in the hope that it will be useful, |
| 15 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | # GNU General Public License for more details. |
| 18 | # |
| 19 | # You should have received a copy of the GNU General Public License |
| 20 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 21 | # |
| 22 | |
| 23 | seq="$(basename $0)" |
| 24 | echo "QA output created by $seq" |
| 25 | |
| 26 | status=1 # failure is the default! |
| 27 | |
| 28 | _cleanup() |
| 29 | { |
| 30 | _cleanup_test_img |
| 31 | } |
| 32 | trap "_cleanup; exit \$status" 0 1 2 3 15 |
| 33 | |
| 34 | # get standard environment, filters and checks |
| 35 | . ./common.rc |
| 36 | . ./common.filter |
| 37 | |
| 38 | _supported_fmt raw |
| 39 | _supported_proto file |
| 40 | _supported_os Linux |
| 41 | |
| 42 | _default_cache_mode none |
| 43 | _supported_cache_modes none directsync |
| 44 | _require_disk_usage |
| 45 | |
| 46 | echo |
| 47 | echo "=== Check mapping of unaligned raw image ===" |
| 48 | echo |
| 49 | |
| 50 | # We do not know how large a physical sector is, but it is certainly |
| 51 | # going to be a factor of 1 MB |
| 52 | size=$((1 * 1024 * 1024 - 1)) |
| 53 | |
| 54 | # qemu-img create rounds size up to BDRV_SECTOR_SIZE |
| 55 | _make_test_img $size |
| 56 | $QEMU_IMG map --output=json --image-opts \ |
| 57 | "driver=$IMGFMT,file.driver=file,file.filename=$TEST_IMG,cache.direct=on" \ |
| 58 | | _filter_qemu_img_map |
| 59 | |
| 60 | # so we resize it and check again |
| 61 | truncate --size=$size "$TEST_IMG" |
| 62 | $QEMU_IMG map --output=json --image-opts \ |
| 63 | "driver=$IMGFMT,file.driver=file,file.filename=$TEST_IMG,cache.direct=on" \ |
| 64 | | _filter_qemu_img_map |
| 65 | |
| 66 | # qemu-io with O_DIRECT always writes whole physical sectors. Again, |
| 67 | # we do not know how large a physical sector is, so we just start |
| 68 | # writing from a 64 kB boundary, which should always be aligned. |
| 69 | offset=$((1 * 1024 * 1024 - 64 * 1024)) |
| 70 | $QEMU_IO -c "w $offset $((size - offset))" "$TEST_IMG" | _filter_qemu_io |
| 71 | $QEMU_IMG map --output=json --image-opts \ |
| 72 | "driver=$IMGFMT,file.driver=file,file.filename=$TEST_IMG,cache.direct=on" \ |
| 73 | | _filter_qemu_img_map |
| 74 | |
| 75 | # Resize it and check again -- contrary to 221, we may not get partial |
| 76 | # sectors here, so there should be only two areas (one zero, one |
| 77 | # data). |
| 78 | truncate --size=$size "$TEST_IMG" |
| 79 | $QEMU_IMG map --output=json --image-opts \ |
| 80 | "driver=$IMGFMT,file.driver=file,file.filename=$TEST_IMG,cache.direct=on" \ |
| 81 | | _filter_qemu_img_map |
| 82 | |
| 83 | # success, all done |
| 84 | echo '*** done' |
| 85 | rm -f $seq.full |
| 86 | status=0 |