tests/qemu-iotests/034

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