tests/qemu-iotests/058

   1 #!/bin/bash
   2 #
   3 # Test export internal snapshot by qemu-nbd, convert it by qemu-img.
   4 #
   5 # Copyright (C) 2013 IBM, Inc.
   6 #
   7 # Based on 029.
   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=xiawenc@linux.vnet.ibm.com
  25
  26 seq=`basename $0`
  27 echo "QA output created by $seq"
  28
  29 here=`pwd`
  30 tmp=/tmp/$$
  31 status=1        # failure is the default!
  32
  33 nbd_unix_socket=$TEST_DIR/test_qemu_nbd_socket
  34 nbd_snapshot_img="nbd:unix:$nbd_unix_socket"
  35
  36 _cleanup_nbd()
  37 {
  38     if [ -n "$NBD_SNAPSHOT_PID" ]; then
  39         kill "$NBD_SNAPSHOT_PID"
  40     fi
  41     rm -f "$nbd_unix_socket"
  42 }
  43
  44 _wait_for_nbd()
  45 {
  46     for ((i = 0; i < 300; i++))
  47     do
  48         if [ -r "$nbd_unix_socket" ]; then
  49             return
  50         fi
  51         sleep 0.1
  52     done
  53     echo "Failed in check of unix socket created by qemu-nbd"
  54     exit 1
  55 }
  56
  57 converted_image=$TEST_IMG.converted
  58
  59 _export_nbd_snapshot()
  60 {
  61     _cleanup_nbd
  62     $QEMU_NBD -v -t -k "$nbd_unix_socket" "$TEST_IMG" -l $1 &
  63     NBD_SNAPSHOT_PID=$!
  64     _wait_for_nbd
  65 }
  66
  67 _export_nbd_snapshot1()
  68 {
  69     _cleanup_nbd
  70     $QEMU_NBD -v -t -k "$nbd_unix_socket" "$TEST_IMG" -l snapshot.name=$1 &
  71     NBD_SNAPSHOT_PID=$!
  72     _wait_for_nbd
  73 }
  74
  75 _cleanup()
  76 {
  77     _cleanup_nbd
  78     _cleanup_test_img
  79     rm -f "$converted_image"
  80 }
  81 trap "_cleanup; exit \$status" 0 1 2 3 15
  82
  83 # get standard environment, filters and checks
  84 . ./common.rc
  85 . ./common.filter
  86 . ./common.pattern
  87
  88 _supported_fmt qcow2
  89 _supported_proto file
  90 _supported_os Linux
  91 _require_command QEMU_NBD
  92 # Internal snapshots are (currently) impossible with refcount_bits=1
  93 _unsupported_imgopts 'refcount_bits=1[^0-9]'
  94
  95 # Use -f raw instead of -f $IMGFMT for the NBD connection
  96 QEMU_IO_NBD="$QEMU_IO -f raw --cache=$CACHEMODE"
  97
  98 echo
  99 echo "== preparing image =="
 100 _make_test_img 64M
 101 $QEMU_IO -c 'write -P 0xa 0x1000 0x1000' "$TEST_IMG" | _filter_qemu_io
 102 $QEMU_IO -c 'write -P 0xb 0x2000 0x1000' "$TEST_IMG" | _filter_qemu_io
 103 $QEMU_IMG snapshot -c sn1 "$TEST_IMG"
 104 $QEMU_IO -c 'write -P 0xc 0x1000 0x1000' "$TEST_IMG" | _filter_qemu_io
 105 $QEMU_IO -c 'write -P 0xd 0x2000 0x1000' "$TEST_IMG" | _filter_qemu_io
 106 _check_test_img
 107
 108 echo
 109 echo "== verifying the image file with patterns =="
 110 $QEMU_IO -c 'read -P 0xc 0x1000 0x1000' "$TEST_IMG" | _filter_qemu_io
 111 $QEMU_IO -c 'read -P 0xd 0x2000 0x1000' "$TEST_IMG" | _filter_qemu_io
 112
 113 _export_nbd_snapshot sn1
 114
 115 echo
 116 echo "== verifying the exported snapshot with patterns, method 1 =="
 117 $QEMU_IO_NBD -c 'read -P 0xa 0x1000 0x1000' "$nbd_snapshot_img" | _filter_qemu_io
 118 $QEMU_IO_NBD -c 'read -P 0xb 0x2000 0x1000' "$nbd_snapshot_img" | _filter_qemu_io
 119
 120 _export_nbd_snapshot1 sn1
 121
 122 echo
 123 echo "== verifying the exported snapshot with patterns, method 2 =="
 124 $QEMU_IO_NBD -c 'read -P 0xa 0x1000 0x1000' "$nbd_snapshot_img" | _filter_qemu_io
 125 $QEMU_IO_NBD -c 'read -P 0xb 0x2000 0x1000' "$nbd_snapshot_img" | _filter_qemu_io
 126
 127 $QEMU_IMG convert "$TEST_IMG" -l sn1 -O qcow2 "$converted_image"
 128
 129 echo
 130 echo "== verifying the converted snapshot with patterns, method 1 =="
 131 $QEMU_IO -c 'read -P 0xa 0x1000 0x1000' "$converted_image" | _filter_qemu_io
 132 $QEMU_IO -c 'read -P 0xb 0x2000 0x1000' "$converted_image" | _filter_qemu_io
 133
 134 $QEMU_IMG convert "$TEST_IMG" -l snapshot.name=sn1 -O qcow2 "$converted_image"
 135
 136 echo
 137 echo "== verifying the converted snapshot with patterns, method 2 =="
 138 $QEMU_IO -c 'read -P 0xa 0x1000 0x1000' "$converted_image" | _filter_qemu_io
 139 $QEMU_IO -c 'read -P 0xb 0x2000 0x1000' "$converted_image" | _filter_qemu_io
 140
 141 # success, all done
 142 echo "*** done"
 143 rm -f $seq.full
 144 status=0