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}" "${TEST_IMG}.1" "${TEST_IMG}.2" "${TEST_IMG}.base"
  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}: extra_params to the blockdev-add command
  91 # ${3}: filename
  92 function do_blockdev_add()
  93 {
  94     cmd="{ 'execute': 'blockdev-add', 'arguments':
  95            { 'driver': 'qcow2', 'node-name': 'snap_${1}', ${2}
  96              'file':
  97              { 'driver': 'file', 'filename': '${3}',
  98                'node-name': 'file_${1}' } } }"
  99     _send_qemu_cmd $h "${cmd}" "return"
 100 }
 101
 102 # ${1}: unique identifier for the snapshot filename
 103 function add_snapshot_image()
 104 {
 105     base_image="${TEST_DIR}/$((${1}-1))-${snapshot_virt0}"
 106     snapshot_file="${TEST_DIR}/${1}-${snapshot_virt0}"
 107     _make_test_img -u -b "${base_image}" "$size"
 108     mv "${TEST_IMG}" "${snapshot_file}"
 109     do_blockdev_add "$1" "'backing': null, " "${snapshot_file}"
 110 }
 111
 112 # ${1}: unique identifier for the snapshot filename
 113 # ${2}: expected response, defaults to 'return'
 114 function blockdev_snapshot()
 115 {
 116     cmd="{ 'execute': 'blockdev-snapshot',
 117                       'arguments': { 'node': 'virtio0',
 118                                      'overlay':'snap_${1}' } }"
 119     _send_qemu_cmd $h "${cmd}" "${2:-return}"
 120 }
 121
 122 size=128M
 123
 124 _make_test_img $size
 125 mv "${TEST_IMG}" "${TEST_IMG}.1"
 126 _make_test_img $size
 127 mv "${TEST_IMG}" "${TEST_IMG}.2"
 128
 129 echo
 130 echo === Running QEMU ===
 131 echo
 132
 133 qemu_comm_method="qmp"
 134 _launch_qemu -drive file="${TEST_IMG}.1",if=virtio -drive file="${TEST_IMG}.2",if=virtio
 135 h=$QEMU_HANDLE
 136
 137 echo
 138 echo === Sending capabilities ===
 139 echo
 140
 141 _send_qemu_cmd $h "{ 'execute': 'qmp_capabilities' }" "return"
 142
 143 # Tests for the blockdev-snapshot-sync command
 144
 145 echo
 146 echo === Create a single snapshot on virtio0 ===
 147 echo
 148
 149 create_single_snapshot 1
 150
 151
 152 echo
 153 echo === Invalid command - missing device and nodename ===
 154 echo
 155
 156 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot-sync',
 157                          'arguments': { 'snapshot-file':'${TEST_DIR}/1-${snapshot_virt0}',
 158                                      'format': 'qcow2' } }" "error"
 159
 160 echo
 161 echo === Invalid command - missing snapshot-file ===
 162 echo
 163
 164 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot-sync',
 165                          'arguments': { 'device': 'virtio0',
 166                                      'format': 'qcow2' } }" "error"
 167 echo
 168 echo
 169 echo === Create several transactional group snapshots ===
 170 echo
 171
 172 for i in $(seq 2 ${SNAPSHOTS})
 173 do
 174     create_group_snapshot ${i}
 175 done
 176
 177 # Tests for the blockdev-snapshot command
 178
 179 echo
 180 echo === Create a couple of snapshots using blockdev-snapshot ===
 181 echo
 182
 183 SNAPSHOTS=$((${SNAPSHOTS}+1))
 184 add_snapshot_image ${SNAPSHOTS}
 185 blockdev_snapshot ${SNAPSHOTS}
 186
 187 SNAPSHOTS=$((${SNAPSHOTS}+1))
 188 add_snapshot_image ${SNAPSHOTS}
 189 blockdev_snapshot ${SNAPSHOTS}
 190
 191 echo
 192 echo === Invalid command - cannot create a snapshot using a file BDS ===
 193 echo
 194
 195 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 196                      'arguments': { 'node':'virtio0',
 197                                     'overlay':'file_${SNAPSHOTS}' }
 198                    }" "error"
 199
 200 echo
 201 echo === Invalid command - snapshot node used as active layer ===
 202 echo
 203
 204 blockdev_snapshot ${SNAPSHOTS} error
 205
 206 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 207                      'arguments': { 'node':'virtio0',
 208                                     'overlay':'virtio0' }
 209                    }" "error"
 210
 211 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 212                      'arguments': { 'node':'virtio0',
 213                                     'overlay':'virtio1' }
 214                    }" "error"
 215
 216 echo
 217 echo === Invalid command - snapshot node used as backing hd ===
 218 echo
 219
 220 blockdev_snapshot $((${SNAPSHOTS}-1)) error
 221
 222 echo
 223 echo === Invalid command - snapshot node has a backing image ===
 224 echo
 225
 226 SNAPSHOTS=$((${SNAPSHOTS}+1))
 227
 228 TEST_IMG="$TEST_IMG.base" _make_test_img "$size"
 229 _make_test_img -b "${TEST_IMG}.base" "$size"
 230 do_blockdev_add ${SNAPSHOTS} "" "${TEST_IMG}"
 231 blockdev_snapshot ${SNAPSHOTS} error
 232
 233 echo
 234 echo === Invalid command - The node does not exist ===
 235 echo
 236
 237 blockdev_snapshot $((${SNAPSHOTS}+1)) error
 238
 239 _send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
 240                      'arguments': { 'node':'nodevice',
 241                                     'overlay':'snap_${SNAPSHOTS}' }
 242                    }" "error"
 243
 244 # success, all done
 245 echo "*** done"
 246 rm -f $seq.full
 247 status=0