1#!/usr/bin/env bash 2# 3# Test image locking 4# 5# Copyright 2016, 2017 Red Hat, Inc. 6# 7# This program is free software; you can redistribute it and/or modify 8# it under the terms of the GNU General Public License as published by 9# the Free Software Foundation; either version 2 of the License, or 10# (at your option) any later version. 11# 12# This program is distributed in the hope that it will be useful, 13# but WITHOUT ANY WARRANTY; without even the implied warranty of 14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15# GNU General Public License for more details. 16# 17# You should have received a copy of the GNU General Public License 18# along with this program. If not, see <http://www.gnu.org/licenses/>. 19# 20 21# creator 22owner=famz@redhat.com 23 24seq="$(basename $0)" 25echo "QA output created by $seq" 26 27tmp=/tmp/$$ 28status=1 # failure is the default! 29 30_cleanup() 31{ 32 _cleanup_test_img 33 rm -f "${TEST_IMG}.base" 34 rm -f "${TEST_IMG}.overlay" 35 rm -f "${TEST_IMG}.convert" 36 rm -f "${TEST_IMG}.a" 37 rm -f "${TEST_IMG}.b" 38 rm -f "${TEST_IMG}.c" 39 rm -f "${TEST_IMG}.lnk" 40} 41trap "_cleanup; exit \$status" 0 1 2 3 15 42 43# get standard environment, filters and checks 44. ./common.rc 45. ./common.filter 46. ./common.qemu 47 48size=32M 49 50_check_ofd() 51{ 52 _make_test_img $size >/dev/null 53 if $QEMU_IMG_PROG info --image-opts "driver=file,locking=on,filename=$TEST_IMG" 2>&1 | 54 grep -q 'falling back to POSIX file'; then 55 return 1 56 else 57 return 0 58 fi 59} 60 61_check_ofd || _notrun "OFD lock not available" 62 63_supported_fmt qcow2 64_supported_proto file 65 66_run_cmd() 67{ 68 echo 69 (echo "$@"; "$@" 2>&1 1>/dev/null) | _filter_testdir 70} 71 72_do_run_qemu() 73{ 74 ( 75 if ! test -t 0; then 76 while read cmd; do 77 echo $cmd 78 done 79 fi 80 echo quit 81 ) | $QEMU -nographic -monitor stdio -serial none "$@" 1>/dev/null 82} 83 84_run_qemu_with_images() 85{ 86 _do_run_qemu \ 87 $(for i in $@; do echo "-drive if=none,file=$i"; done) 2>&1 \ 88 | _filter_testdir | _filter_qemu 89} 90 91echo "== readonly=off,force-share=on should be rejected ==" 92_run_qemu_with_images null-co://,readonly=off,force-share=on 93 94for opts1 in "" "read-only=on" "read-only=on,force-share=on"; do 95 echo 96 echo "== Creating base image ==" 97 TEST_IMG="${TEST_IMG}.base" _make_test_img $size 98 99 echo 100 echo "== Creating test image ==" 101 $QEMU_IMG create -f $IMGFMT "${TEST_IMG}" -b ${TEST_IMG}.base | _filter_img_create 102 103 echo 104 echo "== Launching QEMU, opts: '$opts1' ==" 105 _launch_qemu -drive file="${TEST_IMG}",if=none,$opts1 106 h=$QEMU_HANDLE 107 108 for opts2 in "" "read-only=on" "read-only=on,force-share=on"; do 109 echo 110 echo "== Launching another QEMU, opts: '$opts2' ==" 111 echo "quit" | \ 112 $QEMU -nographic -monitor stdio \ 113 -drive file="${TEST_IMG}",if=none,$opts2 2>&1 1>/dev/null | \ 114 _filter_testdir | _filter_qemu 115 done 116 117 for L in "" "-U"; do 118 119 echo 120 echo "== Running utility commands $L ==" 121 _run_cmd $QEMU_IO $L -c "read 0 512" "${TEST_IMG}" 122 _run_cmd $QEMU_IO $L -r -c "read 0 512" "${TEST_IMG}" 123 _run_cmd $QEMU_IO -c "open $L ${TEST_IMG}" -c "read 0 512" 124 _run_cmd $QEMU_IO -c "open -r $L ${TEST_IMG}" -c "read 0 512" 125 _run_cmd $QEMU_IMG info $L "${TEST_IMG}" 126 _run_cmd $QEMU_IMG check $L "${TEST_IMG}" 127 _run_cmd $QEMU_IMG compare $L "${TEST_IMG}" "${TEST_IMG}" 128 _run_cmd $QEMU_IMG map $L "${TEST_IMG}" 129 _run_cmd $QEMU_IMG amend -o "" $L "${TEST_IMG}" 130 _run_cmd $QEMU_IMG commit $L "${TEST_IMG}" 131 _run_cmd $QEMU_IMG resize $L "${TEST_IMG}" $size 132 _run_cmd $QEMU_IMG rebase $L "${TEST_IMG}" -b "${TEST_IMG}.base" 133 _run_cmd $QEMU_IMG snapshot -l $L "${TEST_IMG}" 134 _run_cmd $QEMU_IMG convert $L "${TEST_IMG}" "${TEST_IMG}.convert" 135 _run_cmd $QEMU_IMG dd $L if="${TEST_IMG}" of="${TEST_IMG}.convert" bs=512 count=1 136 _run_cmd $QEMU_IMG bench $L -c 1 "${TEST_IMG}" 137 _run_cmd $QEMU_IMG bench $L -w -c 1 "${TEST_IMG}" 138 139 # qemu-img create does not support -U 140 if [ -z "$L" ]; then 141 _run_cmd $QEMU_IMG create -f $IMGFMT "${TEST_IMG}" \ 142 -b ${TEST_IMG}.base 143 # Read the file format. It used to be the case that 144 # file-posix simply truncated the file, but the qcow2 145 # driver then failed to format it because it was unable 146 # to acquire the necessary WRITE permission. However, the 147 # truncation was already wrong, and the whole process 148 # resulted in the file being completely empty and thus its 149 # format would be detected to be raw. 150 # So we read it here to see that creation either completed 151 # successfully (thus the format is qcow2) or it aborted 152 # before the file was changed at all (thus the format stays 153 # qcow2). 154 _img_info -U | grep 'file format' 155 fi 156 done 157 _send_qemu_cmd $h "{ 'execute': 'quit' }" '' 158 echo 159 echo "Round done" 160 _cleanup_qemu 161done 162 163test_opts="read-only=off read-only=on read-only=on,force-share=on" 164for opt1 in $test_opts; do 165 for opt2 in $test_opts; do 166 echo 167 echo "== Two devices with the same image ($opt1 - $opt2) ==" 168 _run_qemu_with_images "${TEST_IMG},$opt1" "${TEST_IMG},$opt2" 169 done 170done 171 172echo 173echo "== Creating ${TEST_IMG}.[abc] ==" | _filter_testdir 174( 175 $QEMU_IMG create -f qcow2 "${TEST_IMG}.a" -b "${TEST_IMG}" 176 $QEMU_IMG create -f qcow2 "${TEST_IMG}.b" -b "${TEST_IMG}" 177 $QEMU_IMG create -f qcow2 "${TEST_IMG}.c" -b "${TEST_IMG}.b" 178) | _filter_img_create 179 180echo 181echo "== Two devices sharing the same file in backing chain ==" 182_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.b" 183_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.c" 184 185echo 186echo "== Backing image also as an active device ==" 187_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}" 188 189echo 190echo "== Backing image also as an active device (ro) ==" 191_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG},readonly=on" 192 193echo 194echo "== Symbolic link ==" 195rm -f "${TEST_IMG}.lnk" &>/dev/null 196ln -s ${TEST_IMG} "${TEST_IMG}.lnk" || echo "Failed to create link" 197_run_qemu_with_images "${TEST_IMG}.lnk" "${TEST_IMG}" 198 199echo 200echo "== Active commit to intermediate layer should work when base in use ==" 201_launch_qemu -drive format=$IMGFMT,file="${TEST_IMG}.a",id=drive0,if=none \ 202 -device virtio-blk,drive=drive0 203 204_send_qemu_cmd $QEMU_HANDLE \ 205 "{ 'execute': 'qmp_capabilities' }" \ 206 'return' 207_run_cmd $QEMU_IMG commit -b "${TEST_IMG}.b" "${TEST_IMG}.c" 208 209_cleanup_qemu 210 211_launch_qemu 212 213_send_qemu_cmd $QEMU_HANDLE \ 214 "{ 'execute': 'qmp_capabilities' }" \ 215 'return' 216 217echo "Adding drive" 218_send_qemu_cmd $QEMU_HANDLE \ 219 "{ 'execute': 'human-monitor-command', 220 'arguments': { 'command-line': 'drive_add 0 if=none,id=d0,file=${TEST_IMG}' } }" \ 221 'return' 222 223_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 224 225echo "Creating overlay with qemu-img when the guest is running should be allowed" 226_run_cmd $QEMU_IMG create -f $IMGFMT -b "${TEST_IMG}" "${TEST_IMG}.overlay" 227 228echo "== Closing an image should unlock it ==" 229_send_qemu_cmd $QEMU_HANDLE \ 230 "{ 'execute': 'human-monitor-command', 231 'arguments': { 'command-line': 'drive_del d0' } }" \ 232 'return' 233 234_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 235 236echo "Adding two and closing one" 237for d in d0 d1; do 238 _send_qemu_cmd $QEMU_HANDLE \ 239 "{ 'execute': 'human-monitor-command', 240 'arguments': { 'command-line': 'drive_add 0 if=none,id=$d,file=${TEST_IMG},readonly=on' } }" \ 241 'return' 242done 243 244_run_cmd $QEMU_IMG info "${TEST_IMG}" 245 246_send_qemu_cmd $QEMU_HANDLE \ 247 "{ 'execute': 'human-monitor-command', 248 'arguments': { 'command-line': 'drive_del d0' } }" \ 249 'return' 250 251_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 252 253echo "Closing the other" 254_send_qemu_cmd $QEMU_HANDLE \ 255 "{ 'execute': 'human-monitor-command', 256 'arguments': { 'command-line': 'drive_del d1' } }" \ 257 'return' 258 259_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 260 261_cleanup_qemu 262 263echo 264echo "== Detecting -U and force-share conflicts ==" 265 266echo 267echo 'No conflict:' 268$QEMU_IMG info -U --image-opts driver=null-co,force-share=on 269echo 270echo 'Conflict:' 271$QEMU_IMG info -U --image-opts driver=null-co,force-share=off 272 273echo 274echo 'No conflict:' 275$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=on' 276echo 277echo 'Conflict:' 278$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=off' 279 280# success, all done 281echo "*** done" 282rm -f $seq.full 283status=0 284