tests/qemu-iotests/034

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