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 for img in "${TEST_IMG}".{base,overlay,convert,a,b,c,lnk}; do 34 _rm_test_img "$img" 35 done 36} 37trap "_cleanup; exit \$status" 0 1 2 3 15 38 39# get standard environment, filters and checks 40. ./common.rc 41. ./common.filter 42. ./common.qemu 43 44size=32M 45 46_check_ofd() 47{ 48 _make_test_img $size >/dev/null 49 if $QEMU_IMG_PROG info --image-opts "driver=file,locking=on,filename=$TEST_IMG" 2>&1 | 50 grep -q 'falling back to POSIX file'; then 51 return 1 52 else 53 return 0 54 fi 55} 56 57_check_ofd || _notrun "OFD lock not available" 58 59_supported_fmt qcow2 60_supported_proto file 61 62_run_cmd() 63{ 64 echo 65 (echo "$@"; "$@" 2>&1 1>/dev/null) | _filter_testdir 66} 67 68_do_run_qemu() 69{ 70 ( 71 if ! test -t 0; then 72 while read cmd; do 73 echo $cmd 74 done 75 fi 76 echo quit 77 ) | $QEMU -nographic -monitor stdio -serial none "$@" 1>/dev/null 78} 79 80_run_qemu_with_images() 81{ 82 _do_run_qemu \ 83 $(for i in $@; do echo "-drive if=none,file=$i"; done) 2>&1 \ 84 | _filter_testdir | _filter_qemu 85} 86 87echo "== readonly=off,force-share=on should be rejected ==" 88_run_qemu_with_images null-co://,readonly=off,force-share=on 89 90for opts1 in "" "read-only=on" "read-only=on,force-share=on"; do 91 echo 92 echo "== Creating base image ==" 93 TEST_IMG="${TEST_IMG}.base" _make_test_img $size 94 95 echo 96 echo "== Creating test image ==" 97 _make_test_img -b "${TEST_IMG}.base" -F $IMGFMT 98 99 echo 100 echo "== Launching QEMU, opts: '$opts1' ==" 101 _launch_qemu -drive file="${TEST_IMG}",if=none,$opts1 102 h=$QEMU_HANDLE 103 104 for opts2 in "" "read-only=on" "read-only=on,force-share=on"; do 105 echo 106 echo "== Launching another QEMU, opts: '$opts2' ==" 107 echo "quit" | \ 108 $QEMU -nographic -monitor stdio \ 109 -drive file="${TEST_IMG}",if=none,$opts2 2>&1 1>/dev/null | \ 110 _filter_testdir | _filter_qemu 111 done 112 113 for L in "" "-U"; do 114 115 echo 116 echo "== Running utility commands $L ==" 117 _run_cmd $QEMU_IO $L -c "read 0 512" "${TEST_IMG}" 118 _run_cmd $QEMU_IO $L -r -c "read 0 512" "${TEST_IMG}" 119 _run_cmd $QEMU_IO -c "open $L ${TEST_IMG}" -c "read 0 512" 120 _run_cmd $QEMU_IO -c "open -r $L ${TEST_IMG}" -c "read 0 512" 121 _run_cmd $QEMU_IMG info $L "${TEST_IMG}" 122 _run_cmd $QEMU_IMG check $L "${TEST_IMG}" 123 _run_cmd $QEMU_IMG compare $L "${TEST_IMG}" "${TEST_IMG}" 124 _run_cmd $QEMU_IMG map $L "${TEST_IMG}" 125 _run_cmd $QEMU_IMG amend -o "size=$size" $L "${TEST_IMG}" 126 _run_cmd $QEMU_IMG commit $L "${TEST_IMG}" 127 _run_cmd $QEMU_IMG resize $L "${TEST_IMG}" $size 128 _run_cmd $QEMU_IMG rebase $L "${TEST_IMG}" -b "${TEST_IMG}.base" -F $IMGFMT 129 _run_cmd $QEMU_IMG snapshot -l $L "${TEST_IMG}" 130 _run_cmd $QEMU_IMG convert $L "${TEST_IMG}" "${TEST_IMG}.convert" 131 _run_cmd $QEMU_IMG dd $L if="${TEST_IMG}" of="${TEST_IMG}.convert" bs=512 count=1 132 _run_cmd $QEMU_IMG bench $L -c 1 "${TEST_IMG}" 133 _run_cmd $QEMU_IMG bench $L -w -c 1 "${TEST_IMG}" 134 135 # qemu-img create does not support -U 136 if [ -z "$L" ]; then 137 _run_cmd $QEMU_IMG create -f $IMGFMT "${TEST_IMG}" \ 138 -b ${TEST_IMG}.base -F $IMGFMT 139 # Read the file format. It used to be the case that 140 # file-posix simply truncated the file, but the qcow2 141 # driver then failed to format it because it was unable 142 # to acquire the necessary WRITE permission. However, the 143 # truncation was already wrong, and the whole process 144 # resulted in the file being completely empty and thus its 145 # format would be detected to be raw. 146 # So we read it here to see that creation either completed 147 # successfully (thus the format is qcow2) or it aborted 148 # before the file was changed at all (thus the format stays 149 # qcow2). 150 _img_info -U | grep 'file format' 151 fi 152 done 153 _send_qemu_cmd $h "{ 'execute': 'quit' }" '' 154 echo 155 echo "Round done" 156 _cleanup_qemu 157done 158 159test_opts="read-only=off read-only=on read-only=on,force-share=on" 160for opt1 in $test_opts; do 161 for opt2 in $test_opts; do 162 echo 163 echo "== Two devices with the same image ($opt1 - $opt2) ==" 164 _run_qemu_with_images "${TEST_IMG},$opt1" "${TEST_IMG},$opt2" 165 done 166done 167 168echo 169echo "== Creating ${TEST_IMG}.[abc] ==" | _filter_testdir 170$QEMU_IMG create -f qcow2 "${TEST_IMG}.a" -b "${TEST_IMG}" -F $IMGFMT | _filter_img_create 171$QEMU_IMG create -f qcow2 "${TEST_IMG}.b" -b "${TEST_IMG}" -F $IMGFMT | _filter_img_create 172$QEMU_IMG create -f qcow2 "${TEST_IMG}.c" -b "${TEST_IMG}.b" -F $IMGFMT \ 173 | _filter_img_create 174 175echo 176echo "== Two devices sharing the same file in backing chain ==" 177_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.b" 178_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.c" 179 180echo 181echo "== Backing image also as an active device ==" 182_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}" 183 184echo 185echo "== Backing image also as an active device (ro) ==" 186_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG},readonly=on" 187 188echo 189echo "== Symbolic link ==" 190rm -f "${TEST_IMG}.lnk" &>/dev/null 191ln -s ${TEST_IMG} "${TEST_IMG}.lnk" || echo "Failed to create link" 192_run_qemu_with_images "${TEST_IMG}.lnk" "${TEST_IMG}" 193 194echo 195echo "== Active commit to intermediate layer should work when base in use ==" 196_launch_qemu -drive format=$IMGFMT,file="${TEST_IMG}.a",id=drive0,if=none \ 197 -device virtio-blk,drive=drive0 198 199_send_qemu_cmd $QEMU_HANDLE \ 200 "{ 'execute': 'qmp_capabilities' }" \ 201 'return' 202_run_cmd $QEMU_IMG commit -b "${TEST_IMG}.b" "${TEST_IMG}.c" 203 204_cleanup_qemu 205 206_launch_qemu 207 208_send_qemu_cmd $QEMU_HANDLE \ 209 "{ 'execute': 'qmp_capabilities' }" \ 210 'return' 211 212echo "Adding drive" 213_send_qemu_cmd $QEMU_HANDLE \ 214 "{ 'execute': 'human-monitor-command', 215 'arguments': { 'command-line': 'drive_add 0 if=none,id=d0,file=${TEST_IMG}' } }" \ 216 'return' 217 218_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 219 220echo "Creating overlay with qemu-img when the guest is running should be allowed" 221_run_cmd $QEMU_IMG create -f $IMGFMT -b "${TEST_IMG}" -F $IMGFMT "${TEST_IMG}.overlay" 222 223echo "== Closing an image should unlock it ==" 224_send_qemu_cmd $QEMU_HANDLE \ 225 "{ 'execute': 'human-monitor-command', 226 'arguments': { 'command-line': 'drive_del d0' } }" \ 227 'return' 228 229_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 230 231echo "Adding two and closing one" 232for d in d0 d1; do 233 _send_qemu_cmd $QEMU_HANDLE \ 234 "{ 'execute': 'human-monitor-command', 235 'arguments': { 'command-line': 'drive_add 0 if=none,id=$d,file=${TEST_IMG},readonly=on' } }" \ 236 'return' 237done 238 239_run_cmd $QEMU_IMG info "${TEST_IMG}" 240 241_send_qemu_cmd $QEMU_HANDLE \ 242 "{ 'execute': 'human-monitor-command', 243 'arguments': { 'command-line': 'drive_del d0' } }" \ 244 'return' 245 246_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 247 248echo "Closing the other" 249_send_qemu_cmd $QEMU_HANDLE \ 250 "{ 'execute': 'human-monitor-command', 251 'arguments': { 'command-line': 'drive_del d1' } }" \ 252 'return' 253 254_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 255 256_cleanup_qemu 257 258echo 259echo "== Detecting -U and force-share conflicts ==" 260 261echo 262echo 'No conflict:' 263$QEMU_IMG info -U --image-opts driver=null-co,force-share=on 264echo 265echo 'Conflict:' 266$QEMU_IMG info -U --image-opts driver=null-co,force-share=off 267 268echo 269echo 'No conflict:' 270$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=on' 271echo 272echo 'Conflict:' 273$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=off' 274 275# success, all done 276echo "*** done" 277rm -f $seq.full 278status=0 279