blob: 30313f8867d15ccc1e019493a062cfefc868f1d5 [file] [log] [blame]
Philippe Mathieu-Daudé11a82d12019-03-07 15:58:38 +01001#!/usr/bin/env bash
Vladimir Sementsov-Ogievskiy9dd003a2021-01-16 16:44:19 +03002# group: rw auto backing
Max Reitze6ea2312014-10-24 15:57:42 +02003#
4# Commit changes into backing chains and empty the top image if the
5# backing image is not explicitly specified
6#
7# Copyright (C) 2014 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# creator
24owner=mreitz@redhat.com
25
26seq="$(basename $0)"
27echo "QA output created by $seq"
28
Max Reitze6ea2312014-10-24 15:57:42 +020029status=1 # failure is the default!
30
31_cleanup()
32{
33 _cleanup_test_img
34 _rm_test_img "$TEST_IMG.itmd"
35}
36trap "_cleanup; exit \$status" 0 1 2 3 15
37
38# get standard environment, filters and checks
39. ./common.rc
40. ./common.filter
41. ./common.pattern
42
43# Any format supporting backing files and bdrv_make_empty
44_supported_fmt qcow qcow2
Max Reitz57284d22020-10-27 20:05:59 +010045_supported_proto file fuse
Max Reitze6ea2312014-10-24 15:57:42 +020046_supported_os Linux
47
48
Eric Blakea3e15052016-12-05 09:49:34 -060049# Four main passes:
Max Reitze6ea2312014-10-24 15:57:42 +020050# 0: Two-layer backing chain, commit to upper backing file (implicitly)
51# (in this case, the top image will be emptied)
52# 1: Two-layer backing chain, commit to upper backing file (explicitly)
53# (in this case, the top image will implicitly stay unchanged)
54# 2: Two-layer backing chain, commit to upper backing file (implicitly with -d)
55# (in this case, the top image will explicitly stay unchanged)
56# 3: Two-layer backing chain, commit to lower backing file
57# (in this case, the top image will implicitly stay unchanged)
58#
59# 020 already tests committing, so this only tests whether image chains are
60# working properly and that all images above the base are emptied; therefore,
Eric Blakea3e15052016-12-05 09:49:34 -060061# no complicated patterns are necessary. Check near the 2G mark, as qcow2
62# has been buggy at that boundary in the past.
Max Reitze6ea2312014-10-24 15:57:42 +020063for i in 0 1 2 3; do
64
65echo
Daniel P. Berrange07ff9482017-03-31 13:53:54 -050066echo "=== Test pass $i ==="
Max Reitze6ea2312014-10-24 15:57:42 +020067echo
68
Eric Blakef82c5b12017-03-31 13:53:56 -050069len=$((2100 * 1024 * 1024 + 512)) # larger than 2G, and not cluster aligned
70TEST_IMG="$TEST_IMG.base" _make_test_img $len
Eric Blakeb66ff2c2020-07-06 15:39:52 -050071TEST_IMG="$TEST_IMG.itmd" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT $len
72_make_test_img -b "$TEST_IMG.itmd" -F $IMGFMT $len
Max Reitze6ea2312014-10-24 15:57:42 +020073
Eric Blakef82c5b12017-03-31 13:53:56 -050074$QEMU_IO -c "write -P 1 0x7ffd0000 192k" "$TEST_IMG.base" | _filter_qemu_io
75$QEMU_IO -c "write -P 2 0x7ffe0000 128k" "$TEST_IMG.itmd" | _filter_qemu_io
76$QEMU_IO -c "write -P 3 0x7fff0000 64k" "$TEST_IMG" | _filter_qemu_io
77$QEMU_IO -c "write -P 4 $(($len - 512)) 512" "$TEST_IMG" | _filter_qemu_io
Max Reitze6ea2312014-10-24 15:57:42 +020078
79if [ $i -lt 3 ]; then
80 if [ $i == 0 ]; then
81 # -b "$TEST_IMG.itmd" should be the default (that is, committing to the
82 # first backing file in the chain)
83 $QEMU_IMG commit "$TEST_IMG"
84 elif [ $i == 1 ]; then
85 # explicitly specify the commit target (this should imply -d)
86 $QEMU_IMG commit -b "$TEST_IMG.itmd" "$TEST_IMG"
87 else
88 # do not explicitly specify the commit target, but use -d to leave the
89 # top image unchanged
90 $QEMU_IMG commit -d "$TEST_IMG"
91 fi
92
93 # Bottom should be unchanged
Eric Blakea3e15052016-12-05 09:49:34 -060094 $QEMU_IO -c 'read -P 1 0x7ffd0000 192k' "$TEST_IMG.base" | _filter_qemu_io
Eric Blakef82c5b12017-03-31 13:53:56 -050095 $QEMU_IO -c "read -P 0 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io
Max Reitze6ea2312014-10-24 15:57:42 +020096
97 # Intermediate should contain changes from top
Eric Blakea3e15052016-12-05 09:49:34 -060098 $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io
99 $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io
100 $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io
Eric Blakef82c5b12017-03-31 13:53:56 -0500101 $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.itmd" | _filter_qemu_io
Max Reitze6ea2312014-10-24 15:57:42 +0200102
103 # And in pass 0, the top image should be empty, whereas in both other passes
104 # it should be unchanged (which is both checked by qemu-img map)
105else
106 $QEMU_IMG commit -b "$TEST_IMG.base" "$TEST_IMG"
107
108 # Bottom should contain all changes
Eric Blakea3e15052016-12-05 09:49:34 -0600109 $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.base" | _filter_qemu_io
110 $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.base" | _filter_qemu_io
111 $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.base" | _filter_qemu_io
Eric Blakef82c5b12017-03-31 13:53:56 -0500112 $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io
Max Reitze6ea2312014-10-24 15:57:42 +0200113
114 # Both top and intermediate should be unchanged
115fi
116
117$QEMU_IMG map "$TEST_IMG.base" | _filter_qemu_img_map
118$QEMU_IMG map "$TEST_IMG.itmd" | _filter_qemu_img_map
119$QEMU_IMG map "$TEST_IMG" | _filter_qemu_img_map
120
121done
Max Reitze6ea2312014-10-24 15:57:42 +0200122
123
124# success, all done
125echo "*** done"
126rm -f $seq.full
127status=0