tests/qemu-iotests/091

   1 #!/usr/bin/env bash
   2 #
   3 # Live migration test
   4 #
   5 # Performs a migration from one VM to another via monitor commands
   6 #
   7 # Copyright (C) 2014 Red Hat, Inc.
   8 #
   9 # This program is free software; you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation; either version 2 of the License, or
  12 # (at your option) any later version.
  13 #
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 #
  22
  23 # creator
  24 owner=jcody@redhat.com
  25
  26 seq=`basename $0`
  27 echo "QA output created by $seq"
  28
  29 status=1    # failure is the default!
  30
  31 MIG_FIFO="${TEST_DIR}/migrate"
  32
  33 _cleanup()
  34 {
  35     rm -f "${MIG_FIFO}"
  36     _cleanup_qemu
  37     _cleanup_test_img
  38 }
  39 trap "_cleanup; exit \$status" 0 1 2 3 15
  40
  41 # get standard environment, filters and checks
  42 . ./common.rc
  43 . ./common.filter
  44 . ./common.qemu
  45
  46 _supported_fmt qcow2
  47 _supported_proto file
  48 _supported_os Linux
  49 _supported_cache_modes writethrough none writeback
  50 _default_cache_mode none writeback
  51
  52 size=1G
  53
  54 _make_test_img $size
  55
  56 mkfifo "${MIG_FIFO}"
  57
  58 echo
  59 echo === Starting QEMU VM1 ===
  60 echo
  61
  62 qemu_comm_method="monitor"
  63 _launch_qemu -drive file="${TEST_IMG}",cache=${CACHEMODE},aio=${AIOMODE},id=disk
  64 h1=$QEMU_HANDLE
  65
  66 echo
  67 echo === Starting QEMU VM2 ===
  68 echo
  69 _launch_qemu -drive file="${TEST_IMG}",cache=${CACHEMODE},aio=${AIOMODE},id=disk \
  70              -incoming "exec: cat '${MIG_FIFO}'"
  71 h2=$QEMU_HANDLE
  72
  73 echo
  74 echo === VM 1: Migrate from VM1 to VM2  ===
  75 echo
  76
  77 silent=yes
  78 _send_qemu_cmd $h1 'qemu-io disk "write -P 0x22 0 4M"' "(qemu)"
  79 echo "vm1: qemu-io disk write complete"
  80 _send_qemu_cmd $h1 "migrate \"exec: cat > '${MIG_FIFO}'\"" "(qemu)"
  81 echo "vm1: live migration started"
  82 qemu_cmd_repeat=20 _send_qemu_cmd $h1 "info migrate" "completed"
  83 echo "vm1: live migration completed"
  84
  85 echo
  86 echo === VM 2: Post-migration, write to disk, verify running ===
  87 echo
  88
  89 _send_qemu_cmd $h2 'qemu-io disk "write 4M 1M"' "(qemu)"
  90 echo "vm2: qemu-io disk write complete"
  91 qemu_cmd_repeat=20 _send_qemu_cmd $h2 "info status" "running"
  92 echo "vm2: qemu process running successfully"
  93
  94 echo "vm2: flush io, and quit"
  95 _send_qemu_cmd $h2 'qemu-io disk flush' "(qemu)"
  96 _send_qemu_cmd $h2 'quit' ""
  97 _send_qemu_cmd $h1 'quit' ""
  98
  99 wait
 100 echo "Check image pattern"
 101 ${QEMU_IO} -c "read -P 0x22 0 4M" "${TEST_IMG}" | _filter_testdir | _filter_qemu_io
 102
 103 echo "Running 'qemu-img check -r all \$TEST_IMG'"
 104 _check_test_img -r all
 105
 106 echo "*** done"
 107 rm -f $seq.full
 108 status=0