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 $seq"
  34
  35 status=1        # failure is the default!
  36
  37 _cleanup()
  38 {
  39     _cleanup_qemu
  40     for img in "$TEST_IMG"{,.target}{,.backing,.overlay}; do
  41         _rm_test_img "$img"
  42     done
  43 }
  44 trap "_cleanup; exit \$status" 0 1 2 3 15
  45
  46 # get standard environment, filters and checks
  47 . ./common.rc
  48 . ./common.filter
  49 . ./common.qemu
  50
  51 _supported_fmt qcow2 qed
  52 _supported_proto generic
  53 _unsupported_proto vxhs
  54 # Copying files around with cp does not work with external data files
  55 _unsupported_imgopts data_file
  56
  57 # Create source disk
  58 TEST_IMG="$TEST_IMG.backing" _make_test_img 1M
  59 _make_test_img -b "$TEST_IMG.backing" 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" 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" 1M
  89
  90 # Mirror snapshot
  91 _send_qemu_cmd $QEMU_HANDLE \
  92     "{ 'execute': 'drive-mirror',
  93        'arguments': { 'device': 'source',
  94                       'target': '$TEST_IMG.target.overlay',
  95                       'mode': 'existing',
  96                       'sync': 'top' } }" \
  97     'return'
  98
  99 # Wait for convergence
 100 _send_qemu_cmd $QEMU_HANDLE \
 101     '' \
 102     'BLOCK_JOB_READY'
 103
 104 # Write some more
 105 _send_qemu_cmd $QEMU_HANDLE \
 106     "{ 'execute': 'human-monitor-command',
 107        'arguments': { 'command-line':
 108                       'qemu-io source \"write -P 4 192k 64k\"' } }" \
 109     'return'
 110
 111 # Copy source backing chain to the target before completing the job
 112 cp "$TEST_IMG.backing" "$TEST_IMG.target.backing"
 113 cp "$TEST_IMG" "$TEST_IMG.target"
 114 $QEMU_IMG rebase -u -b "$TEST_IMG.target.backing" "$TEST_IMG.target"
 115
 116 # Complete block job
 117 _send_qemu_cmd $QEMU_HANDLE \
 118     "{ 'execute': 'block-job-complete',
 119        'arguments': { 'device': 'source' } }" \
 120     ''
 121
 122 _send_qemu_cmd $QEMU_HANDLE \
 123     '' \
 124     '"status": "null"'
 125
 126 # Remove the source images
 127 for img in "$TEST_IMG{,.backing,.overlay}"; do
 128     _rm_test_img "$img"
 129 done
 130
 131 echo
 132
 133 # Check online disk contents
 134 _send_qemu_cmd $QEMU_HANDLE \
 135     "{ 'execute': 'human-monitor-command',
 136        'arguments': { 'command-line':
 137                       'qemu-io source \"read -P 1 0k 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 2 64k 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 3 128k 64k\"' } }" \
 150     'return'
 151
 152 _send_qemu_cmd $QEMU_HANDLE \
 153     "{ 'execute': 'human-monitor-command',
 154        'arguments': { 'command-line':
 155                       'qemu-io source \"read -P 4 192k 64k\"' } }" \
 156     'return'
 157
 158 echo
 159
 160 _send_qemu_cmd $QEMU_HANDLE \
 161     "{ 'execute': 'quit' }" \
 162     'return'
 163
 164 wait=1 _cleanup_qemu
 165
 166 echo
 167
 168 # Check offline disk contents
 169 $QEMU_IO -c 'read -P 1 0k 64k' \
 170          -c 'read -P 2 64k 64k' \
 171          -c 'read -P 3 128k 64k' \
 172          -c 'read -P 4 192k 64k' \
 173          "$TEST_IMG.target.overlay" | _filter_qemu_io
 174
 175 echo
 176
 177 # success, all done
 178 echo '*** done'
 179 rm -f $seq.full
 180 status=0