tests/qemu-iotests/156

   1 #!/bin/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 $seq"
  34
  35 here="$PWD"
  36 status=1        # failure is the default!
  37
  38 _cleanup()
  39 {
  40     rm -f "$TEST_IMG{,.target}{,.backing,.overlay}"
  41 }
  42 trap "_cleanup; exit \$status" 0 1 2 3 15
  43
  44 # get standard environment, filters and checks
  45 . ./common.rc
  46 . ./common.filter
  47 . ./common.qemu
  48
  49 _supported_fmt qcow2 qed
  50 _supported_proto generic
  51 _supported_os Linux
  52
  53 # Create source disk
  54 TEST_IMG="$TEST_IMG.backing" _make_test_img 1M
  55 _make_test_img -b "$TEST_IMG.backing" 1M
  56
  57 $QEMU_IO -c 'write -P 1 0 256k' "$TEST_IMG.backing" | _filter_qemu_io
  58 $QEMU_IO -c 'write -P 2 64k 192k' "$TEST_IMG" | _filter_qemu_io
  59
  60 _launch_qemu -drive if=none,id=source,file="$TEST_IMG"
  61
  62 _send_qemu_cmd $QEMU_HANDLE \
  63     "{ 'execute': 'qmp_capabilities' }" \
  64     'return'
  65
  66 # Create snapshot
  67 TEST_IMG="$TEST_IMG.overlay" _make_test_img -b "$TEST_IMG" 1M
  68 _send_qemu_cmd $QEMU_HANDLE \
  69     "{ 'execute': 'blockdev-snapshot-sync',
  70        'arguments': { 'device': 'source',
  71                       'snapshot-file': '$TEST_IMG.overlay',
  72                       'format': '$IMGFMT',
  73                       'mode': 'existing' } }" \
  74     'return'
  75
  76 # Write something to the snapshot
  77 _send_qemu_cmd $QEMU_HANDLE \
  78     "{ 'execute': 'human-monitor-command',
  79        'arguments': { 'command-line':
  80                       'qemu-io source \"write -P 3 128k 128k\"' } }" \
  81     'return'
  82
  83 # Create target image
  84 TEST_IMG="$TEST_IMG.target.overlay" _make_test_img -b "$TEST_IMG.target" 1M
  85
  86 # Mirror snapshot
  87 _send_qemu_cmd $QEMU_HANDLE \
  88     "{ 'execute': 'drive-mirror',
  89        'arguments': { 'device': 'source',
  90                       'target': '$TEST_IMG.target.overlay',
  91                       'mode': 'existing',
  92                       'sync': 'top' } }" \
  93     'return'
  94
  95 # Wait for convergence
  96 _send_qemu_cmd $QEMU_HANDLE \
  97     '' \
  98     'BLOCK_JOB_READY'
  99
 100 # Write some more
 101 _send_qemu_cmd $QEMU_HANDLE \
 102     "{ 'execute': 'human-monitor-command',
 103        'arguments': { 'command-line':
 104                       'qemu-io source \"write -P 4 192k 64k\"' } }" \
 105     'return'
 106
 107 # Copy source backing chain to the target before completing the job
 108 cp "$TEST_IMG.backing" "$TEST_IMG.target.backing"
 109 cp "$TEST_IMG" "$TEST_IMG.target"
 110 $QEMU_IMG rebase -u -b "$TEST_IMG.target.backing" "$TEST_IMG.target"
 111
 112 # Complete block job
 113 _send_qemu_cmd $QEMU_HANDLE \
 114     "{ 'execute': 'block-job-complete',
 115        'arguments': { 'device': 'source' } }" \
 116     ''
 117
 118 _send_qemu_cmd $QEMU_HANDLE \
 119     '' \
 120     'BLOCK_JOB_COMPLETED'
 121
 122 # Remove the source images
 123 rm -f "$TEST_IMG{,.backing,.overlay}"
 124
 125 echo
 126
 127 # Check online disk contents
 128 _send_qemu_cmd $QEMU_HANDLE \
 129     "{ 'execute': 'human-monitor-command',
 130        'arguments': { 'command-line':
 131                       'qemu-io source \"read -P 1 0k 64k\"' } }" \
 132     'return'
 133
 134 _send_qemu_cmd $QEMU_HANDLE \
 135     "{ 'execute': 'human-monitor-command',
 136        'arguments': { 'command-line':
 137                       'qemu-io source \"read -P 2 64k 64k\"' } }" \
 138     'return'
 139
 140 _send_qemu_cmd $QEMU_HANDLE \
 141     "{ 'execute': 'human-monitor-command',
 142        'arguments': { 'command-line':
 143                       'qemu-io source \"read -P 3 128k 64k\"' } }" \
 144     'return'
 145
 146 _send_qemu_cmd $QEMU_HANDLE \
 147     "{ 'execute': 'human-monitor-command',
 148        'arguments': { 'command-line':
 149                       'qemu-io source \"read -P 4 192k 64k\"' } }" \
 150     'return'
 151
 152 echo
 153
 154 _send_qemu_cmd $QEMU_HANDLE \
 155     "{ 'execute': 'quit' }" \
 156     'return'
 157
 158 wait=1 _cleanup_qemu
 159
 160 echo
 161
 162 # Check offline disk contents
 163 $QEMU_IO -c 'read -P 1 0k 64k' \
 164          -c 'read -P 2 64k 64k' \
 165          -c 'read -P 3 128k 64k' \
 166          -c 'read -P 4 192k 64k' \
 167          "$TEST_IMG.target.overlay" | _filter_qemu_io
 168
 169 echo
 170
 171 # success, all done
 172 echo '*** done'
 173 rm -f $seq.full
 174 status=0