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" 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 "" $L "${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" 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 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( 171 $QEMU_IMG create -f qcow2 "${TEST_IMG}.a" -b "${TEST_IMG}" 172 $QEMU_IMG create -f qcow2 "${TEST_IMG}.b" -b "${TEST_IMG}" 173 $QEMU_IMG create -f qcow2 "${TEST_IMG}.c" -b "${TEST_IMG}.b" 174) | _filter_img_create 175 176echo 177echo "== Two devices sharing the same file in backing chain ==" 178_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.b" 179_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.c" 180 181echo 182echo "== Backing image also as an active device ==" 183_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}" 184 185echo 186echo "== Backing image also as an active device (ro) ==" 187_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG},readonly=on" 188 189echo 190echo "== Symbolic link ==" 191rm -f "${TEST_IMG}.lnk" &>/dev/null 192ln -s ${TEST_IMG} "${TEST_IMG}.lnk" || echo "Failed to create link" 193_run_qemu_with_images "${TEST_IMG}.lnk" "${TEST_IMG}" 194 195echo 196echo "== Active commit to intermediate layer should work when base in use ==" 197_launch_qemu -drive format=$IMGFMT,file="${TEST_IMG}.a",id=drive0,if=none \ 198 -device virtio-blk,drive=drive0 199 200_send_qemu_cmd $QEMU_HANDLE \ 201 "{ 'execute': 'qmp_capabilities' }" \ 202 'return' 203_run_cmd $QEMU_IMG commit -b "${TEST_IMG}.b" "${TEST_IMG}.c" 204 205_cleanup_qemu 206 207_launch_qemu 208 209_send_qemu_cmd $QEMU_HANDLE \ 210 "{ 'execute': 'qmp_capabilities' }" \ 211 'return' 212 213echo "Adding drive" 214_send_qemu_cmd $QEMU_HANDLE \ 215 "{ 'execute': 'human-monitor-command', 216 'arguments': { 'command-line': 'drive_add 0 if=none,id=d0,file=${TEST_IMG}' } }" \ 217 'return' 218 219_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 220 221echo "Creating overlay with qemu-img when the guest is running should be allowed" 222_run_cmd $QEMU_IMG create -f $IMGFMT -b "${TEST_IMG}" "${TEST_IMG}.overlay" 223 224echo "== Closing an image should unlock it ==" 225_send_qemu_cmd $QEMU_HANDLE \ 226 "{ 'execute': 'human-monitor-command', 227 'arguments': { 'command-line': 'drive_del d0' } }" \ 228 'return' 229 230_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 231 232echo "Adding two and closing one" 233for d in d0 d1; do 234 _send_qemu_cmd $QEMU_HANDLE \ 235 "{ 'execute': 'human-monitor-command', 236 'arguments': { 'command-line': 'drive_add 0 if=none,id=$d,file=${TEST_IMG},readonly=on' } }" \ 237 'return' 238done 239 240_run_cmd $QEMU_IMG info "${TEST_IMG}" 241 242_send_qemu_cmd $QEMU_HANDLE \ 243 "{ 'execute': 'human-monitor-command', 244 'arguments': { 'command-line': 'drive_del d0' } }" \ 245 'return' 246 247_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 248 249echo "Closing the other" 250_send_qemu_cmd $QEMU_HANDLE \ 251 "{ 'execute': 'human-monitor-command', 252 'arguments': { 'command-line': 'drive_del d1' } }" \ 253 'return' 254 255_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 256 257_cleanup_qemu 258 259echo 260echo "== Detecting -U and force-share conflicts ==" 261 262echo 263echo 'No conflict:' 264$QEMU_IMG info -U --image-opts driver=null-co,force-share=on 265echo 266echo 'Conflict:' 267$QEMU_IMG info -U --image-opts driver=null-co,force-share=off 268 269echo 270echo 'No conflict:' 271$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=on' 272echo 273echo 'Conflict:' 274$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=off' 275 276# success, all done 277echo "*** done" 278rm -f $seq.full 279status=0 280