tests/qemu-iotests/034

   1 #!/bin/bash
   2 #
   3 # Test bdrv_pwrite_zeroes with backing files (see also 154)
   4 #
   5 # Copyright (C) 2012 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 $seq"
  26
  27 here=`pwd`
  28 status=1        # failure is the default!
  29
  30 _cleanup()
  31 {
  32         _cleanup_test_img
  33 }
  34 trap "_cleanup; exit \$status" 0 1 2 3 15
  35
  36 # get standard environment, filters and checks
  37 . ./common.rc
  38 . ./common.filter
  39
  40 _supported_fmt qcow qcow2 vmdk qed
  41 _supported_proto file
  42 _supported_os Linux
  43 _unsupported_imgopts "subformat=monolithicFlat" \
  44                      "subformat=twoGbMaxExtentFlat" \
  45                      "subformat=twoGbMaxExtentSparse"
  46
  47 CLUSTER_SIZE=4k
  48 size=128M
  49
  50 echo
  51 echo "== creating backing file for COW tests =="
  52
  53 TEST_IMG_SAVE="$TEST_IMG"
  54 TEST_IMG="$TEST_IMG.base"
  55
  56 _make_test_img $size
  57 $QEMU_IO -c "write -P 0x55 0 1M" "$TEST_IMG" | _filter_qemu_io
  58
  59 TEST_IMG="$TEST_IMG_SAVE"
  60
  61 _make_test_img -b "$TEST_IMG.base" 6G
  62
  63 echo
  64 echo "== zero write with backing file =="
  65 $QEMU_IO -c "write -z 64k 192k" "$TEST_IMG" | _filter_qemu_io
  66 $QEMU_IO -c "write -z 513k 13k" "$TEST_IMG" | _filter_qemu_io
  67
  68 _check_test_img
  69
  70 echo
  71 echo "== verifying patterns (3) =="
  72 $QEMU_IO -c "read -P 0x55 0 64k" "$TEST_IMG" | _filter_qemu_io
  73 $QEMU_IO -c "read -P 0x0 64k 192k" "$TEST_IMG" | _filter_qemu_io
  74 $QEMU_IO -c "read -P 0x55 256k 257k" "$TEST_IMG" | _filter_qemu_io
  75 $QEMU_IO -c "read -P 0x0 513k 13k" "$TEST_IMG" | _filter_qemu_io
  76 $QEMU_IO -c "read -P 0x55 526k 498k" "$TEST_IMG" | _filter_qemu_io
  77
  78 echo
  79 echo "== overwriting zero cluster =="
  80 $QEMU_IO -c "write -P 0xa 60k 8k" "$TEST_IMG" | _filter_qemu_io
  81 $QEMU_IO -c "write -P 0xb 64k 8k" "$TEST_IMG" | _filter_qemu_io
  82 $QEMU_IO -c "write -P 0xc 76k 4k" "$TEST_IMG" | _filter_qemu_io
  83 $QEMU_IO -c "write -P 0xd 252k 8k" "$TEST_IMG" | _filter_qemu_io
  84 $QEMU_IO -c "write -P 0xe 248k 8k" "$TEST_IMG" | _filter_qemu_io
  85
  86 _check_test_img
  87
  88 echo
  89 echo "== verifying patterns (4) =="
  90 $QEMU_IO -c "read -P 0x55 0 60k" "$TEST_IMG" | _filter_qemu_io
  91 $QEMU_IO -c "read -P 0xa 60k 4k" "$TEST_IMG" | _filter_qemu_io
  92 $QEMU_IO -c "read -P 0xb 64k 8k" "$TEST_IMG" | _filter_qemu_io
  93 $QEMU_IO -c "read -P 0x0 72k 4k" "$TEST_IMG" | _filter_qemu_io
  94 $QEMU_IO -c "read -P 0xc 76k 4k" "$TEST_IMG" | _filter_qemu_io
  95 $QEMU_IO -c "read -P 0x0 80k 168k" "$TEST_IMG" | _filter_qemu_io
  96 $QEMU_IO -c "read -P 0xe 248k 8k" "$TEST_IMG" | _filter_qemu_io
  97 $QEMU_IO -c "read -P 0xd 256k 4k" "$TEST_IMG" | _filter_qemu_io
  98 $QEMU_IO -c "read -P 0x55 260k 64k" "$TEST_IMG" | _filter_qemu_io
  99
 100 echo
 101 echo "== re-zeroing overwritten area =="
 102 $QEMU_IO -c "write -z 64k 192k" "$TEST_IMG" | _filter_qemu_io
 103
 104 _check_test_img
 105
 106 echo
 107 echo "== verifying patterns (5) =="
 108 $QEMU_IO -c "read -P 0x55 0 60k" "$TEST_IMG" | _filter_qemu_io
 109 $QEMU_IO -c "read -P 0xa 60k 4k" "$TEST_IMG" | _filter_qemu_io
 110 $QEMU_IO -c "read -P 0x0 64k 192k" "$TEST_IMG" | _filter_qemu_io
 111 $QEMU_IO -c "read -P 0xd 256k 4k" "$TEST_IMG" | _filter_qemu_io
 112 $QEMU_IO -c "read -P 0x55 260k 253k" "$TEST_IMG" | _filter_qemu_io
 113 $QEMU_IO -c "read -P 0x0 513k 13k" "$TEST_IMG" | _filter_qemu_io
 114 $QEMU_IO -c "read -P 0x55 526k 498k" "$TEST_IMG" | _filter_qemu_io
 115
 116 # success, all done
 117 echo "*** done"
 118 rm -f $seq.full
 119 status=0