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