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}" "${snapshot_file}"
 102     cmd="{ 'execute': 'blockdev-add', 'arguments':
 103            { 'driver': 'qcow2', 'node-name': 'snap_${1}', ${extra_params}
 104              'file':
 105              { 'driver': 'file', 'filename': '${snapshot_file}',
 106                'node-name': 'file_${1}' } } }"
 107     _send_qemu_cmd $h "${cmd}" "return"
 108 }
 109
 110 # ${1}: unique identifier for the snapshot filename
 111 # ${2}: expected response, defaults to 'return'
 112 function blockdev_snapshot()
 113 {
 114     cmd="{ 'execute': 'blockdev-snapshot',
 115                       'arguments': { 'node': 'virtio0',
 116                                      'overlay':'snap_${1}' } }"
 117     _send_qemu_cmd $h "${cmd}" "${2:-return}"
 118 }
 119
 120 size=128M
 121
 122 _make_test_img $size
 123 mv "${TEST_IMG}" "${TEST_IMG}.1"
 124 _make_test_img $size
 125 mv "${TEST_IMG}" "${TEST_IMG}.2"
 126
 127 echo
 128 echo === Running QEMU ===
 129 echo
 130
 131 qemu_comm_method="qmp"
 132 _launch_qemu -drive file="${TEST_IMG}.1",if=virtio -drive file="${TEST_IMG}.2",if=virtio
 133 h=$QEMU_HANDLE
 134
 135 echo
 136 echo === Sending capabilities ===
 137 echo
 138
 139 _send_qemu_cmd $h "{ 'execute': 'qmp_capabilities' }" "return"
 140
 141 # Tests for the blockdev-snapshot-sync command
 142
 143 echo
 144 echo === Create a single snapshot on virtio0 ===
 145 echo
 146
 147 create_single_snapshot 1
 148
 149
 150 echo
 151 echo === Invalid command - missing device and nodename ===
 152 echo
 153
 154 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot-sync',
 155                          'arguments': { 'snapshot-file':'${TEST_DIR}/1-${snapshot_virt0}',
 156                                      'format': 'qcow2' } }" "error"
 157
 158 echo
 159 echo === Invalid command - missing snapshot-file ===
 160 echo
 161
 162 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot-sync',
 163                          'arguments': { 'device': 'virtio0',
 164                                      'format': 'qcow2' } }" "error"
 165 echo
 166 echo
 167 echo === Create several transactional group snapshots ===
 168 echo
 169
 170 for i in $(seq 2 ${SNAPSHOTS})
 171 do
 172     create_group_snapshot ${i}
 173 done
 174
 175 # Tests for the blockdev-snapshot command
 176
 177 echo
 178 echo === Create a couple of snapshots using blockdev-snapshot ===
 179 echo
 180
 181 SNAPSHOTS=$((${SNAPSHOTS}+1))
 182 add_snapshot_image ${SNAPSHOTS}
 183 blockdev_snapshot ${SNAPSHOTS}
 184
 185 SNAPSHOTS=$((${SNAPSHOTS}+1))
 186 add_snapshot_image ${SNAPSHOTS}
 187 blockdev_snapshot ${SNAPSHOTS}
 188
 189 echo
 190 echo === Invalid command - cannot create a snapshot using a file BDS ===
 191 echo
 192
 193 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 194                      'arguments': { 'node':'virtio0',
 195                                     'overlay':'file_${SNAPSHOTS}' }
 196                    }" "error"
 197
 198 echo
 199 echo === Invalid command - snapshot node used as active layer ===
 200 echo
 201
 202 blockdev_snapshot ${SNAPSHOTS} error
 203
 204 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 205                      'arguments': { 'node':'virtio0',
 206                                     'overlay':'virtio0' }
 207                    }" "error"
 208
 209 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 210                      'arguments': { 'node':'virtio0',
 211                                     'overlay':'virtio1' }
 212                    }" "error"
 213
 214 echo
 215 echo === Invalid command - snapshot node used as backing hd ===
 216 echo
 217
 218 blockdev_snapshot $((${SNAPSHOTS}-1)) error
 219
 220 echo
 221 echo === Invalid command - snapshot node has a backing image ===
 222 echo
 223
 224 SNAPSHOTS=$((${SNAPSHOTS}+1))
 225 add_snapshot_image ${SNAPSHOTS} true
 226 blockdev_snapshot ${SNAPSHOTS} error
 227
 228 echo
 229 echo === Invalid command - The node does not exist ===
 230 echo
 231
 232 blockdev_snapshot $((${SNAPSHOTS}+1)) error
 233
 234 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 235                      'arguments': { 'node':'nodevice',
 236                                     'overlay':'snap_${SNAPSHOTS}' }
 237                    }" "error"
 238
 239 # success, all done
 240 echo "*** done"
 241 rm -f $seq.full
 242 status=0