tests/qemu-iotests/085

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