tests/qemu-iotests/156

   1 #!/usr/bin/env bash
   2 #
   3 # Tests oVirt-like storage migration:
   4 #  - Create snapshot
   5 #  - Create target image with (not yet existing) target backing chain
   6 #    (i.e. just write the name of a soon-to-be-copied-over backing file into it)
   7 #  - drive-mirror the snapshot to the target with mode=existing and sync=top
   8 #  - In the meantime, copy the original source files to the destination via
   9 #    conventional means (i.e. outside of qemu)
  10 #  - Complete the drive-mirror job
  11 #  - Delete all source images
  12 #
  13 # Copyright (C) 2016 Red Hat, Inc.
  14 #
  15 # This program is free software; you can redistribute it and/or modify
  16 # it under the terms of the GNU General Public License as published by
  17 # the Free Software Foundation; either version 2 of the License, or
  18 # (at your option) any later version.
  19 #
  20 # This program is distributed in the hope that it will be useful,
  21 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 # GNU General Public License for more details.
  24 #
  25 # You should have received a copy of the GNU General Public License
  26 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  27 #
  28
  29 # creator
  30 owner=mreitz@redhat.com
  31
  32 seq="$(basename $0)"
  33 echo "QA output created by $seq"
  34
  35 status=1        # failure is the default!
  36
  37 _cleanup()
  38 {
  39     _cleanup_qemu
  40     rm -f "$TEST_IMG"{,.target}{,.backing,.overlay}
  41 }
  42 trap "_cleanup; exit \$status" 0 1 2 3 15
  43
  44 # get standard environment, filters and checks
  45 . ./common.rc
  46 . ./common.filter
  47 . ./common.qemu
  48
  49 _supported_fmt qcow2 qed
  50 _supported_proto generic
  51 _unsupported_proto vxhs
  52 _supported_os Linux
  53
  54 # Create source disk
  55 TEST_IMG="$TEST_IMG.backing" _make_test_img 1M
  56 _make_test_img -b "$TEST_IMG.backing" 1M
  57
  58 $QEMU_IO -c 'write -P 1 0 256k' "$TEST_IMG.backing" | _filter_qemu_io
  59 $QEMU_IO -c 'write -P 2 64k 192k' "$TEST_IMG" | _filter_qemu_io
  60
  61 _launch_qemu -drive if=none,id=source,file="$TEST_IMG"
  62
  63 _send_qemu_cmd $QEMU_HANDLE \
  64     "{ 'execute': 'qmp_capabilities' }" \
  65     'return'
  66
  67 # Create snapshot
  68 TEST_IMG="$TEST_IMG.overlay" _make_test_img -u -b "$TEST_IMG" 1M
  69 _send_qemu_cmd $QEMU_HANDLE \
  70     "{ 'execute': 'blockdev-snapshot-sync',
  71        'arguments': { 'device': 'source',
  72                       'snapshot-file': '$TEST_IMG.overlay',
  73                       'format': '$IMGFMT',
  74                       'mode': 'existing' } }" \
  75     'return'
  76
  77 # Write something to the snapshot
  78 _send_qemu_cmd $QEMU_HANDLE \
  79     "{ 'execute': 'human-monitor-command',
  80        'arguments': { 'command-line':
  81                       'qemu-io source \"write -P 3 128k 128k\"' } }" \
  82     'return'
  83
  84 # Create target image
  85 TEST_IMG="$TEST_IMG.target.overlay" _make_test_img -u -b "$TEST_IMG.target" 1M
  86
  87 # Mirror snapshot
  88 _send_qemu_cmd $QEMU_HANDLE \
  89     "{ 'execute': 'drive-mirror',
  90        'arguments': { 'device': 'source',
  91                       'target': '$TEST_IMG.target.overlay',
  92                       'mode': 'existing',
  93                       'sync': 'top' } }" \
  94     'return'
  95
  96 # Wait for convergence
  97 _send_qemu_cmd $QEMU_HANDLE \
  98     '' \
  99     'BLOCK_JOB_READY'
 100
 101 # Write some more
 102 _send_qemu_cmd $QEMU_HANDLE \
 103     "{ 'execute': 'human-monitor-command',
 104        'arguments': { 'command-line':
 105                       'qemu-io source \"write -P 4 192k 64k\"' } }" \
 106     'return'
 107
 108 # Copy source backing chain to the target before completing the job
 109 cp "$TEST_IMG.backing" "$TEST_IMG.target.backing"
 110 cp "$TEST_IMG" "$TEST_IMG.target"
 111 $QEMU_IMG rebase -u -b "$TEST_IMG.target.backing" "$TEST_IMG.target"
 112
 113 # Complete block job
 114 _send_qemu_cmd $QEMU_HANDLE \
 115     "{ 'execute': 'block-job-complete',
 116        'arguments': { 'device': 'source' } }" \
 117     ''
 118
 119 _send_qemu_cmd $QEMU_HANDLE \
 120     '' \
 121     '"status": "null"'
 122
 123 # Remove the source images
 124 rm -f "$TEST_IMG{,.backing,.overlay}"
 125
 126 echo
 127
 128 # Check online disk contents
 129 _send_qemu_cmd $QEMU_HANDLE \
 130     "{ 'execute': 'human-monitor-command',
 131        'arguments': { 'command-line':
 132                       'qemu-io source \"read -P 1 0k 64k\"' } }" \
 133     'return'
 134
 135 _send_qemu_cmd $QEMU_HANDLE \
 136     "{ 'execute': 'human-monitor-command',
 137        'arguments': { 'command-line':
 138                       'qemu-io source \"read -P 2 64k 64k\"' } }" \
 139     'return'
 140
 141 _send_qemu_cmd $QEMU_HANDLE \
 142     "{ 'execute': 'human-monitor-command',
 143        'arguments': { 'command-line':
 144                       'qemu-io source \"read -P 3 128k 64k\"' } }" \
 145     'return'
 146
 147 _send_qemu_cmd $QEMU_HANDLE \
 148     "{ 'execute': 'human-monitor-command',
 149        'arguments': { 'command-line':
 150                       'qemu-io source \"read -P 4 192k 64k\"' } }" \
 151     'return'
 152
 153 echo
 154
 155 _send_qemu_cmd $QEMU_HANDLE \
 156     "{ 'execute': 'quit' }" \
 157     'return'
 158
 159 wait=1 _cleanup_qemu
 160
 161 echo
 162
 163 # Check offline disk contents
 164 $QEMU_IO -c 'read -P 1 0k 64k' \
 165          -c 'read -P 2 64k 64k' \
 166          -c 'read -P 3 128k 64k' \
 167          -c 'read -P 4 192k 64k' \
 168          "$TEST_IMG.target.overlay" | _filter_qemu_io
 169
 170 echo
 171
 172 # success, all done
 173 echo '*** done'
 174 rm -f $seq.full
 175 status=0