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