1#!/usr/bin/env bash 2# group: rw quick 3# 4# Test image locking 5# 6# Copyright 2016, 2017 Red Hat, Inc. 7# 8# This program is free software; you can redistribute it and/or modify 9# it under the terms of the GNU General Public License as published by 10# the Free Software Foundation; either version 2 of the License, or 11# (at your option) any later version. 12# 13# This program is distributed in the hope that it will be useful, 14# but WITHOUT ANY WARRANTY; without even the implied warranty of 15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16# GNU General Public License for more details. 17# 18# You should have received a copy of the GNU General Public License 19# along with this program. If not, see <http://www.gnu.org/licenses/>. 20# 21 22# creator 23owner=fam@euphon.net 24 25seq="$(basename $0)" 26echo "QA output created by $seq" 27 28tmp=/tmp/$$ 29status=1 # failure is the default! 30 31_cleanup() 32{ 33 _cleanup_test_img 34 for img in "${TEST_IMG}".{base,overlay,convert,a,b,c,lnk}; do 35 _rm_test_img "$img" 36 done 37} 38trap "_cleanup; exit \$status" 0 1 2 3 15 39 40# get standard environment, filters and checks 41. ./common.rc 42. ./common.filter 43. ./common.qemu 44 45size=32M 46 47_check_ofd() 48{ 49 _make_test_img $size >/dev/null 50 if $QEMU_IMG_PROG info --image-opts "driver=file,locking=on,filename=$TEST_IMG" 2>&1 | 51 grep -q 'falling back to POSIX file'; then 52 return 1 53 else 54 return 0 55 fi 56} 57 58_check_ofd || _notrun "OFD lock not available" 59 60_supported_fmt qcow2 61_supported_proto file 62 63_run_cmd() 64{ 65 echo 66 (echo "$@"; "$@" 2>&1 1>/dev/null) | _filter_testdir 67} 68 69_do_run_qemu() 70{ 71 ( 72 if ! test -t 0; then 73 while read cmd; do 74 echo $cmd 75 done 76 fi 77 echo quit 78 ) | $QEMU -nographic -monitor stdio -serial none "$@" 1>/dev/null 79} 80 81_run_qemu_with_images() 82{ 83 _do_run_qemu \ 84 $(for i in $@; do echo "-drive if=none,file=$i"; done) 2>&1 \ 85 | _filter_testdir | _filter_qemu 86} 87 88echo "== readonly=off,force-share=on should be rejected ==" 89_run_qemu_with_images null-co://,readonly=off,force-share=on 90 91for opts1 in "" "read-only=on" "read-only=on,force-share=on"; do 92 echo 93 echo "== Creating base image ==" 94 TEST_IMG="${TEST_IMG}.base" _make_test_img $size 95 96 echo 97 echo "== Creating test image ==" 98 _make_test_img -b "${TEST_IMG}.base" -F $IMGFMT 99 100 echo 101 echo "== Launching QEMU, opts: '$opts1' ==" 102 _launch_qemu -drive file="${TEST_IMG}",if=none,$opts1 103 h=$QEMU_HANDLE 104 105 for opts2 in "" "read-only=on" "read-only=on,force-share=on"; do 106 echo 107 echo "== Launching another QEMU, opts: '$opts2' ==" 108 echo "quit" | \ 109 $QEMU -nographic -monitor stdio \ 110 -drive file="${TEST_IMG}",if=none,$opts2 2>&1 1>/dev/null | \ 111 _filter_testdir | _filter_qemu 112 done 113 114 for L in "" "-U"; do 115 116 echo 117 echo "== Running utility commands $L ==" 118 _run_cmd $QEMU_IO $L -c "read 0 512" "${TEST_IMG}" 119 _run_cmd $QEMU_IO $L -r -c "read 0 512" "${TEST_IMG}" 120 _run_cmd $QEMU_IO -c "open $L ${TEST_IMG}" -c "read 0 512" 121 _run_cmd $QEMU_IO -c "open -r $L ${TEST_IMG}" -c "read 0 512" 122 _run_cmd $QEMU_IMG info $L "${TEST_IMG}" 123 _run_cmd $QEMU_IMG check $L "${TEST_IMG}" 124 _run_cmd $QEMU_IMG compare $L "${TEST_IMG}" "${TEST_IMG}" 125 _run_cmd $QEMU_IMG map $L "${TEST_IMG}" 126 _run_cmd $QEMU_IMG amend -o "size=$size" $L "${TEST_IMG}" 127 _run_cmd $QEMU_IMG commit $L "${TEST_IMG}" 128 _run_cmd $QEMU_IMG resize $L "${TEST_IMG}" $size 129 _run_cmd $QEMU_IMG rebase $L "${TEST_IMG}" -b "${TEST_IMG}.base" -F $IMGFMT 130 _run_cmd $QEMU_IMG snapshot -l $L "${TEST_IMG}" 131 _run_cmd $QEMU_IMG convert $L "${TEST_IMG}" "${TEST_IMG}.convert" 132 _run_cmd $QEMU_IMG dd $L if="${TEST_IMG}" of="${TEST_IMG}.convert" bs=512 count=1 133 _run_cmd $QEMU_IMG bench $L -c 1 "${TEST_IMG}" 134 _run_cmd $QEMU_IMG bench $L -w -c 1 "${TEST_IMG}" 135 136 # qemu-img create does not support -U 137 if [ -z "$L" ]; then 138 _run_cmd $QEMU_IMG create -f $IMGFMT "${TEST_IMG}" \ 139 -b ${TEST_IMG}.base -F $IMGFMT 140 # Read the file format. It used to be the case that 141 # file-posix simply truncated the file, but the qcow2 142 # driver then failed to format it because it was unable 143 # to acquire the necessary WRITE permission. However, the 144 # truncation was already wrong, and the whole process 145 # resulted in the file being completely empty and thus its 146 # format would be detected to be raw. 147 # So we read it here to see that creation either completed 148 # successfully (thus the format is qcow2) or it aborted 149 # before the file was changed at all (thus the format stays 150 # qcow2). 151 _img_info -U | grep 'file format' 152 fi 153 done 154 _send_qemu_cmd $h "{ 'execute': 'quit' }" '' 155 echo 156 echo "Round done" 157 _cleanup_qemu 158done 159 160test_opts="read-only=off read-only=on read-only=on,force-share=on" 161for opt1 in $test_opts; do 162 for opt2 in $test_opts; do 163 echo 164 echo "== Two devices with the same image ($opt1 - $opt2) ==" 165 _run_qemu_with_images "${TEST_IMG},$opt1" "${TEST_IMG},$opt2" 166 done 167done 168 169echo 170echo "== Creating ${TEST_IMG}.[abc] ==" | _filter_testdir 171$QEMU_IMG create -f qcow2 "${TEST_IMG}.a" -b "${TEST_IMG}" -F $IMGFMT | _filter_img_create 172$QEMU_IMG create -f qcow2 "${TEST_IMG}.b" -b "${TEST_IMG}" -F $IMGFMT | _filter_img_create 173$QEMU_IMG create -f qcow2 "${TEST_IMG}.c" -b "${TEST_IMG}.b" -F $IMGFMT \ 174 | _filter_img_create 175 176echo 177echo "== Two devices sharing the same file in backing chain ==" 178_run_qemu_with_images "${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}" -F $IMGFMT "${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