tests/qemu-iotests/153

   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
  22 owner=famz@redhat.com
  23
  24 seq="$(basename $0)"
  25 echo "QA output created by $seq"
  26
  27 tmp=/tmp/$$
  28 status=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 }
  37 trap "_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
  44 size=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
  87 echo "== readonly=off,force-share=on should be rejected =="
  88 _run_qemu_with_images null-co://,readonly=off,force-share=on
  89
  90 for 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 $QEMU_IMG amend -o "size=$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"
 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
 157 done
 158
 159 test_opts="read-only=off read-only=on read-only=on,force-share=on"
 160 for 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
 166 done
 167
 168 echo
 169 echo "== 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 "${TEST_IMG}.b"
 174 ) | _filter_img_create
 175
 176 echo
 177 echo "== Two devices sharing the same file in backing chain =="
 178 _run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.b"
 179 _run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.c"
 180
 181 echo
 182 echo "== Backing image also as an active device =="
 183 _run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}"
 184
 185 echo
 186 echo "== Backing image also as an active device (ro) =="
 187 _run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG},readonly=on"
 188
 189 echo
 190 echo "== Symbolic link =="
 191 rm -f "${TEST_IMG}.lnk" &>/dev/null
 192 ln -s ${TEST_IMG} "${TEST_IMG}.lnk" || echo "Failed to create link"
 193 _run_qemu_with_images "${TEST_IMG}.lnk" "${TEST_IMG}"
 194
 195 echo
 196 echo "== 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
 213 echo "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
 221 echo "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
 224 echo "== 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
 232 echo "Adding two and closing one"
 233 for 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'
 238 done
 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
 249 echo "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
 259 echo
 260 echo "== Detecting -U and force-share conflicts =="
 261
 262 echo
 263 echo 'No conflict:'
 264 $QEMU_IMG info -U --image-opts driver=null-co,force-share=on
 265 echo
 266 echo 'Conflict:'
 267 $QEMU_IMG info -U --image-opts driver=null-co,force-share=off
 268
 269 echo
 270 echo 'No conflict:'
 271 $QEMU_IO -c 'open -r -U -o driver=null-co,force-share=on'
 272 echo
 273 echo 'Conflict:'
 274 $QEMU_IO -c 'open -r -U -o driver=null-co,force-share=off'
 275
 276 # success, all done
 277 echo "*** done"
 278 rm -f $seq.full
 279 status=0