tests/qemu-iotests/085

   1 #!/usr/bin/env bash
   2 # group: rw
   3 #
   4 # Live snapshot tests
   5 #
   6 # This tests live snapshots of images on a running QEMU instance, using
   7 # QMP commands.  Both single disk snapshots, and transactional group
   8 # snapshots are performed.
   9 #
  10 # Copyright (C) 2014 Red Hat, Inc.
  11 # Copyright (C) 2015 Igalia, S.L.
  12 #
  13 # This program is free software; you can redistribute it and/or modify
  14 # it under the terms of the GNU General Public License as published by
  15 # the Free Software Foundation; either version 2 of the License, or
  16 # (at your option) any later version.
  17 #
  18 # This program is distributed in the hope that it will be useful,
  19 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 # GNU General Public License for more details.
  22 #
  23 # You should have received a copy of the GNU General Public License
  24 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  25 #
  26
  27 # creator
  28 owner=codyprime@gmail.com
  29
  30 seq=`basename $0`
  31 echo "QA output created by $seq"
  32
  33 status=1        # failure is the default!
  34
  35 snapshot_virt0="snapshot-v0.qcow2"
  36 snapshot_virt1="snapshot-v1.qcow2"
  37
  38 SNAPSHOTS=10
  39
  40 _cleanup()
  41 {
  42     _cleanup_qemu
  43     _cleanup_test_img
  44     for i in $(seq 1 ${SNAPSHOTS})
  45     do
  46         _rm_test_img "${TEST_DIR}/${i}-${snapshot_virt0}"
  47         _rm_test_img "${TEST_DIR}/${i}-${snapshot_virt1}"
  48     done
  49     for img in "${TEST_IMG}".{1,2,base}
  50     do
  51         _rm_test_img "$img"
  52     done
  53
  54 }
  55 trap "_cleanup; exit \$status" 0 1 2 3 15
  56
  57 # get standard environment, filters and checks
  58 . ./common.rc
  59 . ./common.filter
  60 . ./common.qemu
  61
  62 _supported_fmt qcow2
  63 _supported_proto file
  64
  65
  66 # ${1}: unique identifier for the snapshot filename
  67 create_single_snapshot()
  68 {
  69     cmd="{ 'execute': 'blockdev-snapshot-sync',
  70                       'arguments': { 'device': 'virtio0',
  71                                      'snapshot-file':'${TEST_DIR}/${1}-${snapshot_virt0}',
  72                                      'format': 'qcow2' } }"
  73     _send_qemu_cmd $h "${cmd}" "return"
  74 }
  75
  76 # ${1}: unique identifier for the snapshot filename
  77 create_group_snapshot()
  78 {
  79     cmd="{ 'execute': 'transaction', 'arguments':
  80            {'actions': [
  81                { 'type': 'blockdev-snapshot-sync', 'data' :
  82                    { 'device': 'virtio0',
  83                       'snapshot-file': '${TEST_DIR}/${1}-${snapshot_virt0}' } },
  84                { 'type': 'blockdev-snapshot-sync', 'data' :
  85                    { 'device': 'virtio1',
  86                        'snapshot-file': '${TEST_DIR}/${1}-${snapshot_virt1}' } } ]
  87              } }"
  88
  89     _send_qemu_cmd $h "${cmd}" "return"
  90 }
  91
  92 # ${1}: unique identifier for the snapshot filename
  93 # ${2}: extra_params to the blockdev-add command
  94 # ${3}: filename
  95 do_blockdev_add()
  96 {
  97     cmd="{ 'execute': 'blockdev-add', 'arguments':
  98            { 'driver': 'qcow2', 'node-name': 'snap_${1}', ${2}
  99              'file':
 100              { 'driver': 'file', 'filename': '${3}',
 101                'node-name': 'file_${1}' } } }"
 102     _send_qemu_cmd $h "${cmd}" "return"
 103 }
 104
 105 # ${1}: unique identifier for the snapshot filename
 106 create_snapshot_image()
 107 {
 108     base_image="${TEST_DIR}/$((${1}-1))-${snapshot_virt0}"
 109     snapshot_file="${TEST_DIR}/${1}-${snapshot_virt0}"
 110     TEST_IMG=$snapshot_file _make_test_img -u -b "${base_image}" -F $IMGFMT "$size"
 111 }
 112
 113 # ${1}: unique identifier for the snapshot filename
 114 add_snapshot_image()
 115 {
 116     snapshot_file="${TEST_DIR}/${1}-${snapshot_virt0}"
 117     create_snapshot_image "$1"
 118     do_blockdev_add "$1" "'backing': null, " "${snapshot_file}"
 119 }
 120
 121 # ${1}: unique identifier for the snapshot filename
 122 # ${2}: expected response, defaults to 'return'
 123 blockdev_snapshot()
 124 {
 125     cmd="{ 'execute': 'blockdev-snapshot',
 126                       'arguments': { 'node': 'virtio0',
 127                                      'overlay':'snap_${1}' } }"
 128     _send_qemu_cmd $h "${cmd}" "${2:-return}"
 129 }
 130
 131 size=128M
 132
 133 TEST_IMG="$TEST_IMG.1" _make_test_img $size
 134 TEST_IMG="$TEST_IMG.2" _make_test_img $size
 135
 136 echo
 137 echo === Running QEMU ===
 138 echo
 139
 140 qemu_comm_method="qmp"
 141 _launch_qemu -drive file="${TEST_IMG}.1",if=virtio -drive file="${TEST_IMG}.2",if=virtio
 142 h=$QEMU_HANDLE
 143
 144 echo
 145 echo === Sending capabilities ===
 146 echo
 147
 148 _send_qemu_cmd $h "{ 'execute': 'qmp_capabilities' }" "return"
 149
 150 # Tests for the blockdev-snapshot-sync command
 151
 152 echo
 153 echo === Create a single snapshot on virtio0 ===
 154 echo
 155
 156 create_single_snapshot 1
 157
 158
 159 echo
 160 echo === Invalid command - missing device and nodename ===
 161 echo
 162
 163 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot-sync',
 164                          'arguments': { 'snapshot-file':'${TEST_DIR}/1-${snapshot_virt0}',
 165                                      'format': 'qcow2' } }" "error"
 166
 167 echo
 168 echo === Invalid command - missing snapshot-file ===
 169 echo
 170
 171 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot-sync',
 172                          'arguments': { 'device': 'virtio0',
 173                                      'format': 'qcow2' } }" "error"
 174 echo
 175 echo
 176 echo === Create several transactional group snapshots ===
 177 echo
 178
 179 for i in $(seq 2 ${SNAPSHOTS})
 180 do
 181     create_group_snapshot ${i}
 182 done
 183
 184 # Tests for the blockdev-snapshot command
 185
 186 echo
 187 echo === Create a couple of snapshots using blockdev-snapshot ===
 188 echo
 189
 190 SNAPSHOTS=$((${SNAPSHOTS}+1))
 191 add_snapshot_image ${SNAPSHOTS}
 192 blockdev_snapshot ${SNAPSHOTS}
 193
 194 SNAPSHOTS=$((${SNAPSHOTS}+1))
 195 add_snapshot_image ${SNAPSHOTS}
 196 blockdev_snapshot ${SNAPSHOTS}
 197
 198 echo
 199 echo === Invalid command - cannot create a snapshot using a file BDS ===
 200 echo
 201
 202 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 203                      'arguments': { 'node':'virtio0',
 204                                     'overlay':'file_${SNAPSHOTS}' }
 205                    }" "error"
 206
 207 echo
 208 echo === Invalid command - snapshot node used as active layer ===
 209 echo
 210
 211 blockdev_snapshot ${SNAPSHOTS} error
 212
 213 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 214                      'arguments': { 'node':'virtio0',
 215                                     'overlay':'virtio0' }
 216                    }" "error"
 217
 218 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 219                      'arguments': { 'node':'virtio0',
 220                                     'overlay':'virtio1' }
 221                    }" "error"
 222
 223 echo
 224 echo === Invalid command - snapshot node used as backing hd ===
 225 echo
 226
 227 blockdev_snapshot $((${SNAPSHOTS}-1)) error
 228
 229 echo
 230 echo === Invalid command - snapshot node has a backing image ===
 231 echo
 232
 233 SNAPSHOTS=$((${SNAPSHOTS}+1))
 234
 235 TEST_IMG="$TEST_IMG.base" _make_test_img "$size"
 236 _make_test_img -b "${TEST_IMG}.base" -F $IMGFMT "$size"
 237 do_blockdev_add ${SNAPSHOTS} "" "${TEST_IMG}"
 238 blockdev_snapshot ${SNAPSHOTS} error
 239
 240 echo
 241 echo === Invalid command - creating loops ===
 242 echo
 243
 244 SNAPSHOTS=$((${SNAPSHOTS}+1))
 245 add_snapshot_image ${SNAPSHOTS}
 246
 247 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 248                      'arguments': { 'node':'snap_${SNAPSHOTS}',
 249                                     'overlay':'snap_${SNAPSHOTS}' }
 250                    }" "error"
 251
 252 SNAPSHOTS=$((${SNAPSHOTS}+1))
 253 create_snapshot_image ${SNAPSHOTS}
 254 do_blockdev_add ${SNAPSHOTS} "'backing': 'snap_$((${SNAPSHOTS}-1))', " \
 255     "${TEST_DIR}/${SNAPSHOTS}-${snapshot_virt0}"
 256
 257 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 258                      'arguments': { 'node':'snap_${SNAPSHOTS}',
 259                                     'overlay':'snap_$((${SNAPSHOTS}-1))' }
 260                    }" "error"
 261
 262 echo
 263 echo === Invalid command - The node does not exist ===
 264 echo
 265
 266 blockdev_snapshot $((${SNAPSHOTS}+1)) error
 267
 268 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 269                      'arguments': { 'node':'nodevice',
 270                                     'overlay':'snap_${SNAPSHOTS}' }
 271                    }" "error"
 272
 273 # success, all done
 274 echo "*** done"
 275 rm -f $seq.full
 276 status=0