tests/qemu-iotests/029

   1 #!/bin/bash
   2 #
   3 # qcow2 internal snapshots/VM state tests
   4 #
   5 # Copyright (C) 2011 Red Hat, Inc.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 #
  20
  21 # creator
  22 owner=kwolf@redhat.com
  23
  24 seq=`basename $0`
  25 echo "QA output created by $seq"
  26
  27 here=`pwd`
  28 status=1        # failure is the default!
  29
  30 _cleanup()
  31 {
  32     rm -f $TEST_IMG.snap
  33     _cleanup_test_img
  34 }
  35 trap "_cleanup; exit \$status" 0 1 2 3 15
  36
  37 # get standard environment, filters and checks
  38 . ./common.rc
  39 . ./common.filter
  40 . ./common.pattern
  41
  42 # Any format supporting intenal snapshots
  43 _supported_fmt qcow2
  44 _supported_proto generic
  45 _supported_os Linux
  46 # Internal snapshots are (currently) impossible with refcount_bits=1
  47 _unsupported_imgopts 'refcount_bits=1[^0-9]'
  48
  49 offset_size=24
  50 offset_l1_size=36
  51
  52 echo
  53 echo Test loading internal snapshots where the L1 table of the snapshot
  54 echo is smaller than the current L1 table.
  55 echo
  56
  57 CLUSTER_SIZE=65536
  58 _make_test_img 64M
  59 $QEMU_IMG snapshot -c foo "$TEST_IMG"
  60 $QEMU_IO -c 'write -b 0 4k' "$TEST_IMG" | _filter_qemu_io
  61 $QEMU_IMG snapshot -a foo "$TEST_IMG"
  62 _check_test_img
  63
  64 CLUSTER_SIZE=1024
  65 _make_test_img 16M
  66 $QEMU_IMG snapshot -c foo "$TEST_IMG"
  67 $QEMU_IO -c 'write -b 0 4M' "$TEST_IMG" | _filter_qemu_io
  68 $QEMU_IMG snapshot -a foo "$TEST_IMG"
  69 _check_test_img
  70
  71
  72 echo
  73 echo Try using a huge VM state
  74 echo
  75
  76 CLUSTER_SIZE=65536
  77 _make_test_img 64M
  78 { $QEMU_IO -c "write -b -P 0x11 1T 4k" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  79 { $QEMU_IMG snapshot -c foo $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  80 { $QEMU_IMG snapshot -a foo $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  81 { $QEMU_IO -c "read -b -P 0x11 1T 4k" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  82 _check_test_img
  83
  84
  85 echo
  86 echo "qcow2_snapshot_load_tmp() should take the L1 size from the snapshot"
  87 echo
  88
  89 CLUSTER_SIZE=512
  90 _make_test_img 64M
  91 { $QEMU_IMG snapshot -c foo $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  92 poke_file "$TEST_IMG" "$offset_size" "\x00\x00\x00\x00\x00\x00\x02\x00"
  93 poke_file "$TEST_IMG" "$offset_l1_size" "\x00\x00\x00\x01"
  94 { $QEMU_IMG convert -s foo $TEST_IMG $TEST_IMG.snap; } 2>&1 | _filter_qemu_io | _filter_testdir
  95
  96
  97 # success, all done
  98 echo "*** done"
  99 rm -f $seq.full
 100 status=0