| #!/usr/bin/env bash |
| # |
| # Test qemu-img bitmap handling |
| # |
| # Copyright (C) 2018-2020 Red Hat, Inc. |
| # |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| # |
| |
| seq="$(basename $0)" |
| echo "QA output created by $seq" |
| |
| status=1 # failure is the default! |
| |
| _cleanup() |
| { |
| _cleanup_test_img |
| nbd_server_stop |
| } |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| # get standard environment, filters and checks |
| . ./common.rc |
| . ./common.filter |
| . ./common.nbd |
| |
| _supported_fmt qcow2 |
| _supported_proto file |
| _supported_os Linux |
| _require_command QEMU_NBD |
| |
| echo |
| echo "=== Initial image setup ===" |
| echo |
| |
| # Create backing image with one bitmap |
| TEST_IMG="$TEST_IMG.base" _make_test_img 10M |
| $QEMU_IMG bitmap --add -f $IMGFMT "$TEST_IMG.base" b0 |
| $QEMU_IO -c 'w 3M 1M' -f $IMGFMT "$TEST_IMG.base" | _filter_qemu_io |
| |
| # Create initial image and populate two bitmaps: one active, one inactive. |
| ORIG_IMG=$TEST_IMG |
| TEST_IMG=$TEST_IMG.orig |
| _make_test_img -b "$ORIG_IMG.base" -F $IMGFMT 10M |
| $QEMU_IO -c 'w 0 1M' -f $IMGFMT "$TEST_IMG" | _filter_qemu_io |
| $QEMU_IMG bitmap --add -g 512k -f $IMGFMT "$TEST_IMG" b1 |
| $QEMU_IMG bitmap --add --disable -f $IMGFMT "$TEST_IMG" b2 |
| $QEMU_IO -c 'w 3M 1M' -f $IMGFMT "$TEST_IMG" | _filter_qemu_io |
| $QEMU_IMG bitmap --clear -f $IMGFMT "$TEST_IMG" b1 |
| $QEMU_IO -c 'w 1M 1M' -f $IMGFMT "$TEST_IMG" | _filter_qemu_io |
| $QEMU_IMG bitmap --disable -f $IMGFMT "$TEST_IMG" b1 |
| $QEMU_IMG bitmap --enable -f $IMGFMT "$TEST_IMG" b2 |
| $QEMU_IO -c 'w 2M 1M' -f $IMGFMT "$TEST_IMG" | _filter_qemu_io |
| |
| echo |
| echo "=== Bitmap preservation not possible to non-qcow2 ===" |
| echo |
| |
| TEST_IMG=$ORIG_IMG |
| $QEMU_IMG convert --bitmaps -O raw "$TEST_IMG.orig" "$TEST_IMG" && |
| echo "unexpected success" |
| |
| echo |
| echo "=== Convert with bitmap preservation ===" |
| echo |
| |
| # Only bitmaps from the active layer are copied |
| $QEMU_IMG convert --bitmaps -O qcow2 "$TEST_IMG.orig" "$TEST_IMG" |
| $QEMU_IMG info "$TEST_IMG" | _filter_img_info --format-specific |
| # But we can also merge in bitmaps from other layers. This test is a bit |
| # contrived to cover more code paths, in reality, you could merge directly |
| # into b0 without going through tmp |
| $QEMU_IMG bitmap --add --disable -f $IMGFMT "$TEST_IMG" b0 |
| $QEMU_IMG bitmap --add --merge b0 -b "$TEST_IMG.base" -F $IMGFMT \ |
| -f $IMGFMT "$TEST_IMG" tmp |
| $QEMU_IMG bitmap --merge tmp -f $IMGFMT "$TEST_IMG" b0 |
| $QEMU_IMG bitmap --remove --image-opts \ |
| driver=$IMGFMT,file.driver=file,file.filename="$TEST_IMG" tmp |
| $QEMU_IMG info "$TEST_IMG" | _filter_img_info --format-specific |
| |
| echo |
| echo "=== Check bitmap contents ===" |
| echo |
| |
| # x-dirty-bitmap is a hack for reading bitmaps; it abuses block status to |
| # report "data":false for portions of the bitmap which are set |
| IMG="driver=nbd,server.type=unix,server.path=$nbd_unix_socket" |
| nbd_server_start_unix_socket -r -f qcow2 -B b0 "$TEST_IMG" |
| $QEMU_IMG map --output=json --image-opts \ |
| "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b0" | _filter_qemu_img_map |
| nbd_server_start_unix_socket -r -f qcow2 -B b1 "$TEST_IMG" |
| $QEMU_IMG map --output=json --image-opts \ |
| "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b1" | _filter_qemu_img_map |
| nbd_server_start_unix_socket -r -f qcow2 -B b2 "$TEST_IMG" |
| $QEMU_IMG map --output=json --image-opts \ |
| "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map |
| |
| # success, all done |
| echo '*** done' |
| rm -f $seq.full |
| status=0 |