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