tests/qemu-iotests/156

   1 #!/usr/bin/env bash
   2 # group: rw auto quick
   3 #
   4 # Tests oVirt-like storage migration:
   5 #  - Create snapshot
   6 #  - Create target image with (not yet existing) target backing chain
   7 #    (i.e. just write the name of a soon-to-be-copied-over backing file into it)
   8 #  - drive-mirror the snapshot to the target with mode=existing and sync=top
   9 #  - In the meantime, copy the original source files to the destination via
  10 #    conventional means (i.e. outside of qemu)
  11 #  - Complete the drive-mirror job
  12 #  - Delete all source images
  13 #
  14 # Copyright (C) 2016 Red Hat, Inc.
  15 #
  16 # This program is free software; you can redistribute it and/or modify
  17 # it under the terms of the GNU General Public License as published by
  18 # the Free Software Foundation; either version 2 of the License, or
  19 # (at your option) any later version.
  20 #
  21 # This program is distributed in the hope that it will be useful,
  22 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  23 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24 # GNU General Public License for more details.
  25 #
  26 # You should have received a copy of the GNU General Public License
  27 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  28 #
  29
  30 # creator
  31 owner=hreitz@redhat.com
  32
  33 seq="$(basename $0)"
  34 echo "QA output created by $seq"
  35
  36 status=1        # failure is the default!
  37
  38 _cleanup()
  39 {
  40     _cleanup_qemu
  41     for img in "$TEST_IMG"{,.target}{,.backing,.overlay}; do
  42         _rm_test_img "$img"
  43     done
  44 }
  45 trap "_cleanup; exit \$status" 0 1 2 3 15
  46
  47 # get standard environment, filters and checks
  48 . ./common.rc
  49 . ./common.filter
  50 . ./common.qemu
  51
  52 _supported_fmt qcow2 qed
  53 _supported_proto generic
  54 # Copying files around with cp does not work with external data files
  55 _unsupported_imgopts data_file
  56
  57 # Create source disk
  58 TEST_IMG="$TEST_IMG.backing" _make_test_img 1M
  59 _make_test_img -b "$TEST_IMG.backing" -F $IMGFMT 1M
  60
  61 $QEMU_IO -c 'write -P 1 0 256k' "$TEST_IMG.backing" | _filter_qemu_io
  62 $QEMU_IO -c 'write -P 2 64k 192k' "$TEST_IMG" | _filter_qemu_io
  63
  64 _launch_qemu -drive if=none,id=source,file="$TEST_IMG"
  65
  66 _send_qemu_cmd $QEMU_HANDLE \
  67     "{ 'execute': 'qmp_capabilities' }" \
  68     'return'
  69
  70 # Create snapshot
  71 TEST_IMG="$TEST_IMG.overlay" _make_test_img -u -b "$TEST_IMG" -F $IMGFMT 1M
  72 _send_qemu_cmd $QEMU_HANDLE \
  73     "{ 'execute': 'blockdev-snapshot-sync',
  74        'arguments': { 'device': 'source',
  75                       'snapshot-file': '$TEST_IMG.overlay',
  76                       'format': '$IMGFMT',
  77                       'mode': 'existing' } }" \
  78     'return'
  79
  80 # Write something to the snapshot
  81 _send_qemu_cmd $QEMU_HANDLE \
  82     "{ 'execute': 'human-monitor-command',
  83        'arguments': { 'command-line':
  84                       'qemu-io source \"write -P 3 128k 128k\"' } }" \
  85     'return'
  86
  87 # Create target image
  88 TEST_IMG="$TEST_IMG.target.overlay" _make_test_img -u -b "$TEST_IMG.target" \
  89     -F $IMGFMT 1M
  90
  91 # Mirror snapshot
  92 _send_qemu_cmd $QEMU_HANDLE \
  93     "{ 'execute': 'drive-mirror',
  94        'arguments': { 'device': 'source',
  95                       'target': '$TEST_IMG.target.overlay',
  96                       'mode': 'existing',
  97                       'sync': 'top' } }" \
  98     'return'
  99
 100 # Wait for convergence
 101 _send_qemu_cmd $QEMU_HANDLE \
 102     '' \
 103     'BLOCK_JOB_READY'
 104
 105 # Write some more
 106 _send_qemu_cmd $QEMU_HANDLE \
 107     "{ 'execute': 'human-monitor-command',
 108        'arguments': { 'command-line':
 109                       'qemu-io source \"write -P 4 192k 64k\"' } }" \
 110     'return'
 111
 112 # Copy source backing chain to the target before completing the job
 113 cp "$TEST_IMG.backing" "$TEST_IMG.target.backing"
 114 cp "$TEST_IMG" "$TEST_IMG.target"
 115 $QEMU_IMG rebase -u -b "$TEST_IMG.target.backing" -F $IMGFMT "$TEST_IMG.target"
 116
 117 # Complete block job
 118 _send_qemu_cmd $QEMU_HANDLE \
 119     "{ 'execute': 'block-job-complete',
 120        'arguments': { 'device': 'source' } }" \
 121     ''
 122
 123 _send_qemu_cmd $QEMU_HANDLE \
 124     '' \
 125     '"status": "null"'
 126
 127 # Remove the source images
 128 for img in "$TEST_IMG{,.backing,.overlay}"; do
 129     _rm_test_img "$img"
 130 done
 131
 132 echo
 133
 134 # Check online disk contents
 135 _send_qemu_cmd $QEMU_HANDLE \
 136     "{ 'execute': 'human-monitor-command',
 137        'arguments': { 'command-line':
 138                       'qemu-io source \"read -P 1 0k 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 2 64k 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 3 128k 64k\"' } }" \
 151     'return'
 152
 153 _send_qemu_cmd $QEMU_HANDLE \
 154     "{ 'execute': 'human-monitor-command',
 155        'arguments': { 'command-line':
 156                       'qemu-io source \"read -P 4 192k 64k\"' } }" \
 157     'return'
 158
 159 echo
 160
 161 _send_qemu_cmd $QEMU_HANDLE \
 162     "{ 'execute': 'quit' }" \
 163     'return'
 164
 165 wait=1 _cleanup_qemu
 166
 167 echo
 168
 169 # Check offline disk contents
 170 $QEMU_IO -c 'read -P 1 0k 64k' \
 171          -c 'read -P 2 64k 64k' \
 172          -c 'read -P 3 128k 64k' \
 173          -c 'read -P 4 192k 64k' \
 174          "$TEST_IMG.target.overlay" | _filter_qemu_io
 175
 176 echo
 177
 178 # success, all done
 179 echo '*** done'
 180 rm -f $seq.full
 181 status=0