tests/qemu-iotests/177

   1 #!/bin/bash
   2 #
   3 # Test corner cases with unusual block geometries
   4 #
   5 # Copyright (C) 2016-2017 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=eblake@redhat.com
  23
  24 seq=`basename $0`
  25 echo "QA output created by $seq"
  26
  27 here=`pwd`
  28 status=1        # failure is the default!
  29
  30 _cleanup()
  31 {
  32         _cleanup_test_img
  33 }
  34 trap "_cleanup; exit \$status" 0 1 2 3 15
  35
  36 # get standard environment, filters and checks
  37 . ./common.rc
  38 . ./common.filter
  39
  40 _supported_fmt qcow2
  41 _supported_proto file
  42
  43 CLUSTER_SIZE=1M
  44 size=128M
  45 options=driver=blkdebug,image.driver=qcow2
  46 nested_opts=image.file.driver=file,image.file.filename=$TEST_IMG
  47
  48 echo
  49 echo "== setting up files =="
  50
  51 TEST_IMG="$TEST_IMG.base" _make_test_img $size
  52 $QEMU_IO -c "write -P 11 0 $size" "$TEST_IMG.base" | _filter_qemu_io
  53 _make_test_img -b "$TEST_IMG.base"
  54 $QEMU_IO -c "write -P 22 0 $size" "$TEST_IMG" | _filter_qemu_io
  55
  56 # Limited to 64k max-transfer
  57 echo
  58 echo "== constrained alignment and max-transfer =="
  59 limits=align=4k,max-transfer=64k
  60 $QEMU_IO -c "open -o $options,$limits blkdebug::$TEST_IMG" \
  61          -c "write -P 33 1000 128k" -c "read -P 33 1000 128k" | _filter_qemu_io
  62
  63 echo
  64 echo "== write zero with constrained max-transfer =="
  65 limits=align=512,max-transfer=64k,opt-write-zero=$CLUSTER_SIZE
  66 $QEMU_IO -c "open -o $options,$limits blkdebug::$TEST_IMG" \
  67          -c "write -z 8003584 2093056" | _filter_qemu_io
  68
  69 # non-power-of-2 write-zero/discard alignments
  70 echo
  71 echo "== non-power-of-2 write zeroes limits =="
  72
  73 limits=align=512,opt-write-zero=15M,max-write-zero=15M,opt-discard=15M,max-discard=15M
  74 $QEMU_IO -c "open -o $options,$limits blkdebug::$TEST_IMG" \
  75          -c "write -z 32M 32M" | _filter_qemu_io
  76
  77 echo
  78 echo "== non-power-of-2 discard limits =="
  79
  80 limits=align=512,opt-write-zero=15M,max-write-zero=15M,opt-discard=15M,max-discard=15M
  81 $QEMU_IO -c "open -o $options,$limits blkdebug::$TEST_IMG" \
  82          -c "discard 80000001 30M" | _filter_qemu_io
  83
  84 echo
  85 echo "== verify image content =="
  86
  87 function verify_io()
  88 {
  89     if ($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" |
  90             grep "compat: 0.10" > /dev/null); then
  91         # For v2 images, discarded clusters are read from the backing file
  92         discarded=11
  93     else
  94         # Discarded clusters are zeroed for v3 or later
  95         discarded=0
  96     fi
  97
  98     echo read -P 22 0 1000
  99     echo read -P 33 1000 128k
 100     echo read -P 22 132072 7871512
 101     echo read -P 0 8003584 2093056
 102     echo read -P 22 10096640 23457792
 103     echo read -P 0 32M 32M
 104     echo read -P 22 64M 13M
 105     echo read -P $discarded 77M 29M
 106     echo read -P 22 106M 22M
 107 }
 108
 109 verify_io | $QEMU_IO -r "$TEST_IMG" | _filter_qemu_io
 110 $QEMU_IMG map --image-opts "$options,$nested_opts,align=4k" \
 111     | _filter_qemu_img_map
 112
 113 _check_test_img
 114
 115 # success, all done
 116 echo "*** done"
 117 status=0