1#!/bin/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 $seq" 26 27here="$PWD" 28tmp=/tmp/$$ 29status=1 # failure is the default! 30 31_cleanup() 32{ 33 _cleanup_test_img 34 rm -f "${TEST_IMG}.base" 35 rm -f "${TEST_IMG}.overlay" 36 rm -f "${TEST_IMG}.convert" 37 rm -f "${TEST_IMG}.a" 38 rm -f "${TEST_IMG}.b" 39 rm -f "${TEST_IMG}.c" 40 rm -f "${TEST_IMG}.lnk" 41} 42trap "_cleanup; exit \$status" 0 1 2 3 15 43 44# get standard environment, filters and checks 45. ./common.rc 46. ./common.filter 47. ./common.qemu 48 49size=32M 50 51_check_ofd() 52{ 53 _make_test_img $size >/dev/null 54 if $QEMU_IMG_PROG info --image-opts "driver=file,locking=on,filename=$TEST_IMG" 2>&1 | 55 grep -q 'falling back to POSIX file'; then 56 return 1 57 else 58 return 0 59 fi 60} 61 62_check_ofd || _notrun "OFD lock not available" 63 64_supported_fmt qcow2 65_supported_proto file 66_supported_os Linux 67 68_run_cmd() 69{ 70 echo 71 (echo "$@"; "$@" 2>&1 1>/dev/null) | _filter_testdir 72} 73 74function _do_run_qemu() 75{ 76 ( 77 if ! test -t 0; then 78 while read cmd; do 79 echo $cmd 80 done 81 fi 82 echo quit 83 ) | $QEMU -nographic -monitor stdio -serial none "$@" 1>/dev/null 84} 85 86function _run_qemu_with_images() 87{ 88 _do_run_qemu \ 89 $(for i in $@; do echo "-drive if=none,file=$i"; done) 2>&1 \ 90 | _filter_testdir | _filter_qemu 91} 92 93echo "== readonly=off,force-share=on should be rejected ==" 94_run_qemu_with_images null-co://,readonly=off,force-share=on 95 96for opts1 in "" "read-only=on" "read-only=on,force-share=on"; do 97 echo 98 echo "== Creating base image ==" 99 TEST_IMG="${TEST_IMG}.base" _make_test_img $size 100 101 echo 102 echo "== Creating test image ==" 103 $QEMU_IMG create -f $IMGFMT "${TEST_IMG}" -b ${TEST_IMG}.base | _filter_img_create 104 105 echo 106 echo "== Launching QEMU, opts: '$opts1' ==" 107 _launch_qemu -drive file="${TEST_IMG}",if=none,$opts1 108 h=$QEMU_HANDLE 109 110 for opts2 in "" "read-only=on" "read-only=on,force-share=on"; do 111 echo 112 echo "== Launching another QEMU, opts: '$opts2' ==" 113 echo "quit" | \ 114 $QEMU -nographic -monitor stdio \ 115 -drive file="${TEST_IMG}",if=none,$opts2 2>&1 1>/dev/null | \ 116 _filter_testdir | _filter_qemu 117 done 118 119 for L in "" "-U"; do 120 121 echo 122 echo "== Running utility commands $L ==" 123 _run_cmd $QEMU_IO $L -c "read 0 512" "${TEST_IMG}" 124 _run_cmd $QEMU_IO $L -r -c "read 0 512" "${TEST_IMG}" 125 _run_cmd $QEMU_IO -c "open $L ${TEST_IMG}" -c "read 0 512" 126 _run_cmd $QEMU_IO -c "open -r $L ${TEST_IMG}" -c "read 0 512" 127 _run_cmd $QEMU_IMG info $L "${TEST_IMG}" 128 _run_cmd $QEMU_IMG check $L "${TEST_IMG}" 129 _run_cmd $QEMU_IMG compare $L "${TEST_IMG}" "${TEST_IMG}" 130 _run_cmd $QEMU_IMG map $L "${TEST_IMG}" 131 _run_cmd $QEMU_IMG amend -o "" $L "${TEST_IMG}" 132 _run_cmd $QEMU_IMG commit $L "${TEST_IMG}" 133 _run_cmd $QEMU_IMG resize $L "${TEST_IMG}" $size 134 _run_cmd $QEMU_IMG rebase $L "${TEST_IMG}" -b "${TEST_IMG}.base" 135 _run_cmd $QEMU_IMG snapshot -l $L "${TEST_IMG}" 136 _run_cmd $QEMU_IMG convert $L "${TEST_IMG}" "${TEST_IMG}.convert" 137 _run_cmd $QEMU_IMG dd $L if="${TEST_IMG}" of="${TEST_IMG}.convert" bs=512 count=1 138 _run_cmd $QEMU_IMG bench $L -c 1 "${TEST_IMG}" 139 _run_cmd $QEMU_IMG bench $L -w -c 1 "${TEST_IMG}" 140 141 # qemu-img create does not support -U 142 if [ -z "$L" ]; then 143 _run_cmd $QEMU_IMG create -f $IMGFMT "${TEST_IMG}" \ 144 -b ${TEST_IMG}.base 145 # Read the file format. It used to be the case that 146 # file-posix simply truncated the file, but the qcow2 147 # driver then failed to format it because it was unable 148 # to acquire the necessary WRITE permission. However, the 149 # truncation was already wrong, and the whole process 150 # resulted in the file being completely empty and thus its 151 # format would be detected to be raw. 152 # So we read it here to see that creation either completed 153 # successfully (thus the format is qcow2) or it aborted 154 # before the file was changed at all (thus the format stays 155 # qcow2). 156 _img_info -U | grep 'file format' 157 fi 158 done 159 _send_qemu_cmd $h "{ 'execute': 'quit', }" "" 160 echo 161 echo "Round done" 162 _cleanup_qemu 163done 164 165test_opts="read-only=off read-only=on read-only=on,force-share=on" 166for opt1 in $test_opts; do 167 for opt2 in $test_opts; do 168 echo 169 echo "== Two devices with the same image ($opt1 - $opt2) ==" 170 _run_qemu_with_images "${TEST_IMG},$opt1" "${TEST_IMG},$opt2" 171 done 172done 173 174echo 175echo "== Creating ${TEST_IMG}.[abc] ==" | _filter_testdir 176( 177 $QEMU_IMG create -f qcow2 "${TEST_IMG}.a" -b "${TEST_IMG}" 178 $QEMU_IMG create -f qcow2 "${TEST_IMG}.b" -b "${TEST_IMG}" 179 $QEMU_IMG create -f qcow2 "${TEST_IMG}.c" -b "${TEST_IMG}.b" 180) | _filter_img_create 181 182echo 183echo "== Two devices sharing the same file in backing chain ==" 184_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.b" 185_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.c" 186 187echo 188echo "== Backing image also as an active device ==" 189_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}" 190 191echo 192echo "== Backing image also as an active device (ro) ==" 193_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG},readonly=on" 194 195echo 196echo "== Symbolic link ==" 197rm -f "${TEST_IMG}.lnk" &>/dev/null 198ln -s ${TEST_IMG} "${TEST_IMG}.lnk" || echo "Failed to create link" 199_run_qemu_with_images "${TEST_IMG}.lnk" "${TEST_IMG}" 200 201echo 202echo "== Active commit to intermediate layer should work when base in use ==" 203_launch_qemu -drive format=$IMGFMT,file="${TEST_IMG}.a",id=drive0,if=none \ 204 -device virtio-blk,drive=drive0 205 206_send_qemu_cmd $QEMU_HANDLE \ 207 "{ 'execute': 'qmp_capabilities' }" \ 208 'return' 209_run_cmd $QEMU_IMG commit -b "${TEST_IMG}.b" "${TEST_IMG}.c" 210 211_cleanup_qemu 212 213_launch_qemu 214 215_send_qemu_cmd $QEMU_HANDLE \ 216 "{ 'execute': 'qmp_capabilities' }" \ 217 'return' 218 219echo "Adding drive" 220_send_qemu_cmd $QEMU_HANDLE \ 221 "{ 'execute': 'human-monitor-command', 222 'arguments': { 'command-line': 'drive_add 0 if=none,id=d0,file=${TEST_IMG}' } }" \ 223 "" 224 225_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 226 227echo "Creating overlay with qemu-img when the guest is running should be allowed" 228_run_cmd $QEMU_IMG create -f $IMGFMT -b "${TEST_IMG}" "${TEST_IMG}.overlay" 229 230echo "== Closing an image should unlock it ==" 231_send_qemu_cmd $QEMU_HANDLE \ 232 "{ 'execute': 'human-monitor-command', 233 'arguments': { 'command-line': 'drive_del d0' } }" \ 234 "" 235 236_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 237 238echo "Adding two and closing one" 239for d in d0 d1; do 240 _send_qemu_cmd $QEMU_HANDLE \ 241 "{ 'execute': 'human-monitor-command', 242 'arguments': { 'command-line': 'drive_add 0 if=none,id=$d,file=${TEST_IMG},readonly=on' } }" \ 243 "" 244done 245 246_run_cmd $QEMU_IMG info "${TEST_IMG}" 247 248_send_qemu_cmd $QEMU_HANDLE \ 249 "{ 'execute': 'human-monitor-command', 250 'arguments': { 'command-line': 'drive_del d0' } }" \ 251 "" 252 253_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 254 255echo "Closing the other" 256_send_qemu_cmd $QEMU_HANDLE \ 257 "{ 'execute': 'human-monitor-command', 258 'arguments': { 'command-line': 'drive_del d1' } }" \ 259 "" 260 261_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512' 262 263_cleanup_qemu 264 265echo 266echo "== Detecting -U and force-share conflicts ==" 267 268echo 269echo 'No conflict:' 270$QEMU_IMG info -U --image-opts driver=null-co,force-share=on 271echo 272echo 'Conflict:' 273$QEMU_IMG info -U --image-opts driver=null-co,force-share=off 274 275echo 276echo 'No conflict:' 277$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=on' 278echo 279echo 'Conflict:' 280$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=off' 281 282# success, all done 283echo "*** done" 284rm -f $seq.full 285status=0 286