blob: 5ce3b270697179a2ae712113ce3349d88c14abfb [file] [log] [blame]
Philippe Mathieu-Daudé11a82d12019-03-07 15:58:38 +01001#!/usr/bin/env bash
Daniel P. Berrange07ff9482017-03-31 13:53:54 -05002#
3# Commit changes into backing chains and empty the top image if the
4# backing image is not explicitly specified.
5#
Eric Blake40969742017-11-17 10:47:47 -06006# Variant of 097, which includes snapshots and persistent bitmaps, to
7# tickle the slow codepath in qcow2. See also 198, for another feature
8# that tickles the slow codepath.
Daniel P. Berrange07ff9482017-03-31 13:53:54 -05009#
Eric Blake40969742017-11-17 10:47:47 -060010# Copyright (C) 2014, 2017 Red Hat, Inc.
Daniel P. Berrange07ff9482017-03-31 13:53:54 -050011#
12# This program is free software; you can redistribute it and/or modify
13# it under the terms of the GNU General Public License as published by
14# the Free Software Foundation; either version 2 of the License, or
15# (at your option) any later version.
16#
17# This program is distributed in the hope that it will be useful,
18# but WITHOUT ANY WARRANTY; without even the implied warranty of
19# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20# GNU General Public License for more details.
21#
22# You should have received a copy of the GNU General Public License
23# along with this program. If not, see <http://www.gnu.org/licenses/>.
24#
25
26# creator
27owner=mreitz@redhat.com
28
29seq="$(basename $0)"
30echo "QA output created by $seq"
31
Daniel P. Berrange07ff9482017-03-31 13:53:54 -050032status=1 # failure is the default!
33
34_cleanup()
35{
36 _cleanup_test_img
37 _rm_test_img "$TEST_IMG.itmd"
38}
39trap "_cleanup; exit \$status" 0 1 2 3 15
40
41# get standard environment, filters and checks
42. ./common.rc
43. ./common.filter
44. ./common.pattern
45
Eric Blake40969742017-11-17 10:47:47 -060046# This test is specific to qcow2
Daniel P. Berrange07ff9482017-03-31 13:53:54 -050047_supported_fmt qcow2
Max Reitz57284d22020-10-27 20:05:59 +010048_supported_proto file fuse
Daniel P. Berrange07ff9482017-03-31 13:53:54 -050049_supported_os Linux
Max Reitz3be20242019-11-07 17:37:07 +010050# Persistent dirty bitmaps require compat=1.1;
51# Internal snapshots forbid using an external data file
52# (they work with refcount_bits=1 here, though, because there actually
53# is no data when creating the snapshot)
54_unsupported_imgopts 'compat=0.10' data_file
Daniel P. Berrange07ff9482017-03-31 13:53:54 -050055
Eric Blake8cedcff2018-11-16 15:50:02 -060056run_qemu()
Eric Blake40969742017-11-17 10:47:47 -060057{
58 $QEMU -nographic -qmp stdio -serial none "$@" 2>&1 \
Eric Blake28077462017-11-17 13:04:22 -060059 | _filter_testdir | _filter_qmp | _filter_qemu \
60 | sed 's/"sha256": ".\{64\}"/"sha256": HASH/'
Eric Blake40969742017-11-17 10:47:47 -060061}
62
63for reason in snapshot bitmap; do
Daniel P. Berrange07ff9482017-03-31 13:53:54 -050064
65# Four passes:
66# 0: Two-layer backing chain, commit to upper backing file (implicitly)
67# (in this case, the top image will be emptied)
68# 1: Two-layer backing chain, commit to upper backing file (explicitly)
69# (in this case, the top image will implicitly stay unchanged)
70# 2: Two-layer backing chain, commit to upper backing file (implicitly with -d)
71# (in this case, the top image will explicitly stay unchanged)
72# 3: Two-layer backing chain, commit to lower backing file
73# (in this case, the top image will implicitly stay unchanged)
74#
75# 020 already tests committing, so this only tests whether image chains are
76# working properly and that all images above the base are emptied; therefore,
77# no complicated patterns are necessary. Check near the 2G mark, as qcow2
78# has been buggy at that boundary in the past.
79for i in 0 1 2 3; do
80
81echo
Eric Blake40969742017-11-17 10:47:47 -060082echo "=== Test pass $reason.$i ==="
Daniel P. Berrange07ff9482017-03-31 13:53:54 -050083echo
84
Eric Blakef82c5b12017-03-31 13:53:56 -050085len=$((2100 * 1024 * 1024 + 512)) # larger than 2G, and not cluster aligned
86TEST_IMG="$TEST_IMG.base" _make_test_img $len
Eric Blakeb66ff2c2020-07-06 15:39:52 -050087TEST_IMG="$TEST_IMG.itmd" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT $len
88_make_test_img -b "$TEST_IMG.itmd" -F $IMGFMT $len
Eric Blake40969742017-11-17 10:47:47 -060089# Update the top image to use a feature that is incompatible with fast path
90case $reason in
91 snapshot) $QEMU_IMG snapshot -c snap "$TEST_IMG" ;;
92 bitmap)
93 run_qemu <<EOF
94{ "execute": "qmp_capabilities" }
95{ "execute": "blockdev-add",
96 "arguments": { "driver": "qcow2", "node-name": "drive0",
97 "file": { "driver": "file", "filename": "$TEST_IMG" } } }
98{ "execute": "block-dirty-bitmap-add",
99 "arguments": { "node": "drive0", "name": "bitmap0",
Vladimir Sementsov-Ogievskiy3e99da52018-02-02 19:07:52 +0300100 "persistent": true } }
Eric Blake40969742017-11-17 10:47:47 -0600101{ "execute": "quit" }
102EOF
103 ;;
104esac
Daniel P. Berrange07ff9482017-03-31 13:53:54 -0500105
Eric Blakef82c5b12017-03-31 13:53:56 -0500106$QEMU_IO -c "write -P 1 0x7ffd0000 192k" "$TEST_IMG.base" | _filter_qemu_io
107$QEMU_IO -c "write -P 2 0x7ffe0000 128k" "$TEST_IMG.itmd" | _filter_qemu_io
108$QEMU_IO -c "write -P 3 0x7fff0000 64k" "$TEST_IMG" | _filter_qemu_io
109$QEMU_IO -c "write -P 4 $(($len - 512)) 512" "$TEST_IMG" | _filter_qemu_io
Daniel P. Berrange07ff9482017-03-31 13:53:54 -0500110
111if [ $i -lt 3 ]; then
112 if [ $i == 0 ]; then
113 # -b "$TEST_IMG.itmd" should be the default (that is, committing to the
114 # first backing file in the chain)
115 $QEMU_IMG commit "$TEST_IMG"
116 elif [ $i == 1 ]; then
117 # explicitly specify the commit target (this should imply -d)
118 $QEMU_IMG commit -b "$TEST_IMG.itmd" "$TEST_IMG"
119 else
120 # do not explicitly specify the commit target, but use -d to leave the
121 # top image unchanged
122 $QEMU_IMG commit -d "$TEST_IMG"
123 fi
124
125 # Bottom should be unchanged
126 $QEMU_IO -c 'read -P 1 0x7ffd0000 192k' "$TEST_IMG.base" | _filter_qemu_io
Eric Blakef82c5b12017-03-31 13:53:56 -0500127 $QEMU_IO -c "read -P 0 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io
Daniel P. Berrange07ff9482017-03-31 13:53:54 -0500128
129 # Intermediate should contain changes from top
130 $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io
131 $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io
132 $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io
Eric Blakef82c5b12017-03-31 13:53:56 -0500133 $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.itmd" | _filter_qemu_io
Daniel P. Berrange07ff9482017-03-31 13:53:54 -0500134
135 # And in pass 0, the top image should be empty, whereas in both other passes
136 # it should be unchanged (which is both checked by qemu-img map)
137else
138 $QEMU_IMG commit -b "$TEST_IMG.base" "$TEST_IMG"
139
140 # Bottom should contain all changes
141 $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.base" | _filter_qemu_io
142 $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.base" | _filter_qemu_io
143 $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.base" | _filter_qemu_io
Eric Blakef82c5b12017-03-31 13:53:56 -0500144 $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io
Daniel P. Berrange07ff9482017-03-31 13:53:54 -0500145
146 # Both top and intermediate should be unchanged
147fi
148
149$QEMU_IMG map "$TEST_IMG.base" | _filter_qemu_img_map
150$QEMU_IMG map "$TEST_IMG.itmd" | _filter_qemu_img_map
151$QEMU_IMG map "$TEST_IMG" | _filter_qemu_img_map
152
Eric Blake40969742017-11-17 10:47:47 -0600153# Check that the reason for slow path is still present, as appropriate
154case $reason in
155 snapshot)
156 $QEMU_IMG snapshot -l "$TEST_IMG" |
157 sed 's/^\(.\{20\}\).*/\1/; s/ *$//' ;;
158 bitmap)
159 run_qemu <<EOF
160{ "execute": "qmp_capabilities" }
161{ "execute": "blockdev-add",
162 "arguments": { "driver": "qcow2", "node-name": "drive0",
163 "file": { "driver": "file", "filename": "$TEST_IMG" } } }
164{ "execute": "x-debug-block-dirty-bitmap-sha256",
165 "arguments": { "node": "drive0", "name": "bitmap0" } }
166{ "execute": "quit" }
167EOF
168 ;;
169esac
Daniel P. Berrange07ff9482017-03-31 13:53:54 -0500170
Eric Blake40969742017-11-17 10:47:47 -0600171done
172done
Daniel P. Berrange07ff9482017-03-31 13:53:54 -0500173
174# success, all done
175echo "*** done"
176rm -f $seq.full
177status=0