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_supported_os Linux 66 67_run_cmd() 68{ 69 echo 70 (echo "$@"; "$@" 2>&1 1>/dev/null) | _filter_testdir 71} 72 73_do_run_qemu() 74{ 75 ( 76 if ! test -t 0; then 77 while read cmd; do 78 echo $cmd 79 done 80 fi 81 echo quit 82 ) | $QEMU -nographic -monitor stdio -serial none "$@" 1>/dev/null 83} 84 85_run_qemu_with_images() 86{ 87 _do_run_qemu \ 88 $(for i in $@; do echo "-drive if=none,file=$i"; done) 2>&1 \ 89 | _filter_testdir | _filter_qemu 90} 91 92echo "== readonly=off,force-share=on should be rejected ==" 93_run_qemu_with_images null-co://,readonly=off,force-share=on 94 95for opts1 in "" "read-only=on" "read-only=on,force-share=on"; do 96 echo 97 echo "== Creating base image ==" 98 TEST_IMG="${TEST_IMG}.base" _make_test_img $size 99 100 echo 101 echo "== Creating test image ==" 102 $QEMU_IMG create -f $IMGFMT "${TEST_IMG}" -b ${TEST_IMG}.base | _filter_img_create 103 104 echo 105 echo "== Launching QEMU, opts: '$opts1' ==" 106 _launch_qemu -drive file="${TEST_IMG}",if=none,$opts1 107 h=$QEMU_HANDLE 108 109 for opts2 in "" "read-only=on" "read-only=on,force-share=on"; do 110 echo 111 echo "== Launching another QEMU, opts: '$opts2' ==" 112 echo "quit" | \ 113 $QEMU -nographic -monitor stdio \ 114 -drive file="${TEST_IMG}",if=none,$opts2 2>&1 1>/dev/null | \ 115 _filter_testdir | _filter_qemu 116 done 117 118 for L in "" "-U"; do 119 120 echo 121 echo "== Running utility commands $L ==" 122 _run_cmd $QEMU_IO $L -c "read 0 512" "${TEST_IMG}" 123 _run_cmd $QEMU_IO $L -r -c "read 0 512" "${TEST_IMG}" 124 _run_cmd $QEMU_IO -c "open $L ${TEST_IMG}" -c "read 0 512" 125 _run_cmd $QEMU_IO -c "open -r $L ${TEST_IMG}" -c "read 0 512" 126 _run_cmd $QEMU_IMG info $L "${TEST_IMG}" 127 _run_cmd $QEMU_IMG check $L "${TEST_IMG}" 128 _run_cmd $QEMU_IMG compare $L "${TEST_IMG}" "${TEST_IMG}" 129 _run_cmd $QEMU_IMG map $L "${TEST_IMG}" 130 _run_cmd $QEMU_IMG amend -o "" $L "${TEST_IMG}" 131 _run_cmd $QEMU_IMG commit $L "${TEST_IMG}" 132 _run_cmd $QEMU_IMG resize $L "${TEST_IMG}" $size 133 _run_cmd $QEMU_IMG rebase $L "${TEST_IMG}" -b "${TEST_IMG}.base" 134 _run_cmd $QEMU_IMG snapshot -l $L "${TEST_IMG}" 135 _run_cmd $QEMU_IMG convert $L "${TEST_IMG}" "${TEST_IMG}.convert" 136 _run_cmd $QEMU_IMG dd $L if="${TEST_IMG}" of="${TEST_IMG}.convert" bs=512 count=1 137 _run_cmd $QEMU_IMG bench $L -c 1 "${TEST_IMG}" 138 _run_cmd $QEMU_IMG bench $L -w -c 1 "${TEST_IMG}" 139 140 # qemu-img create does not support -U 141 if [ -z "$L" ]; then 142 _run_cmd $QEMU_IMG create -f $IMGFMT "${TEST_IMG}" \ 143 -b ${TEST_IMG}.base 144 # Read the file format. It used to be the case that 145 # file-posix simply truncated the file, but the qcow2 146 # driver then failed to format it because it was unable 147 # to acquire the necessary WRITE permission. However, the 148 # truncation was already wrong, and the whole process 149 # resulted in the file being completely empty and thus its 150 # format would be detected to be raw. 151 # So we read it here to see that creation either completed 152 # successfully (thus the format is qcow2) or it aborted 153 # before the file was changed at all (thus the format stays 154 # qcow2). 155 _img_info -U | grep 'file format' 156 fi 157 done 158 _send_qemu_cmd $h "{ 'execute': 'quit', }" "" 159 echo 160 echo "Round done" 161 _cleanup_qemu 162done 163 164test_opts="read-only=off read-only=on read-only=on,force-share=on" 165for opt1 in $test_opts; do 166 for opt2 in $test_opts; do 167 echo 168 echo "== Two devices with the same image ($opt1 - $opt2) ==" 169 _run_qemu_with_images "${TEST_IMG},$opt1" "${TEST_IMG},$opt2" 170 done 171done 172 173echo 174echo "== Creating ${TEST_IMG}.[abc] ==" | _filter_testdir 175( 176 $QEMU_IMG create -f qcow2 "${TEST_IMG}.a" -b "${TEST_IMG}" 177 $QEMU_IMG create -f qcow2 "${TEST_IMG}.b" -b "${TEST_IMG}" 178 $QEMU_IMG create -f qcow2 "${TEST_IMG}.c" -b "${TEST_IMG}.b" 179) | _filter_img_create 180 181echo 182echo "== Two devices sharing the same file in backing chain ==" 183_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.b" 184_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.c" 185 186echo 187echo "== Backing image also as an active device ==" 188_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}" 189 190echo 191echo "== Backing image also as an active device (ro) ==" 192_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG},readonly=on" 193 194echo 195echo "== Symbolic link ==" 196rm -f "${TEST_IMG}.lnk" &>/dev/null 197ln -s ${TEST_IMG} "${TEST_IMG}.lnk" || echo "Failed to create link" 198_run_qemu_with_images "${TEST_IMG}.lnk" "${TEST_IMG}" 199 200echo 201echo "== Active commit to intermediate layer should work when base in use ==" 202_launch_qemu -drive format=$IMGFMT,file="${TEST_IMG}.a",id=drive0,if=none \ 203 -device virtio-blk,drive=drive0 204 205_send_qemu_cmd $QEMU_HANDLE \ 206 "{ 'execute': 'qmp_capabilities' }" \ 207 'return' 208_run_cmd $QEMU_IMG commit -b "${TEST_IMG}.b" "${TEST_IMG}.c" 209 210_cleanup_qemu 211 212_launch_qemu 213 214_send_qemu_cmd $QEMU_HANDLE \ 215 "{ 'execute': 'qmp_capabilities' }" \ 216 'return' 217 218echo "Adding drive" 219_send_qemu_cmd $QEMU_HANDLE \ 220 "{ 'execute': 'human-monitor-command', 221 'arguments': { 'command-line': 'drive_add 0 if=none,id=d0,file=${TEST_IMG}' } }" \ 222 "" 223 224_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 225 226echo "Creating overlay with qemu-img when the guest is running should be allowed" 227_run_cmd $QEMU_IMG create -f $IMGFMT -b "${TEST_IMG}" "${TEST_IMG}.overlay" 228 229echo "== Closing an image should unlock it ==" 230_send_qemu_cmd $QEMU_HANDLE \ 231 "{ 'execute': 'human-monitor-command', 232 'arguments': { 'command-line': 'drive_del d0' } }" \ 233 "" 234 235_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 236 237echo "Adding two and closing one" 238for d in d0 d1; do 239 _send_qemu_cmd $QEMU_HANDLE \ 240 "{ 'execute': 'human-monitor-command', 241 'arguments': { 'command-line': 'drive_add 0 if=none,id=$d,file=${TEST_IMG},readonly=on' } }" \ 242 "" 243done 244 245_run_cmd $QEMU_IMG info "${TEST_IMG}" 246 247_send_qemu_cmd $QEMU_HANDLE \ 248 "{ 'execute': 'human-monitor-command', 249 'arguments': { 'command-line': 'drive_del d0' } }" \ 250 "" 251 252_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 253 254echo "Closing the other" 255_send_qemu_cmd $QEMU_HANDLE \ 256 "{ 'execute': 'human-monitor-command', 257 'arguments': { 'command-line': 'drive_del d1' } }" \ 258 "" 259 260_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 261 262_cleanup_qemu 263 264echo 265echo "== Detecting -U and force-share conflicts ==" 266 267echo 268echo 'No conflict:' 269$QEMU_IMG info -U --image-opts driver=null-co,force-share=on 270echo 271echo 'Conflict:' 272$QEMU_IMG info -U --image-opts driver=null-co,force-share=off 273 274echo 275echo 'No conflict:' 276$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=on' 277echo 278echo 'Conflict:' 279$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=off' 280 281# success, all done 282echo "*** done" 283rm -f $seq.full 284status=0 285