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