tests/test-sh-extents.sh

   1 #!/usr/bin/env bash
   2 # nbdkit
   3 # Copyright (C) 2018-2019 Red Hat Inc.
   4 #
   5 # Redistribution and use in source and binary forms, with or without
   6 # modification, are permitted provided that the following conditions are
   7 # met:
   8 #
   9 # * Redistributions of source code must retain the above copyright
  10 # notice, this list of conditions and the following disclaimer.
  11 #
  12 # * Redistributions in binary form must reproduce the above copyright
  13 # notice, this list of conditions and the following disclaimer in the
  14 # documentation and/or other materials provided with the distribution.
  15 #
  16 # * Neither the name of Red Hat nor the names of its contributors may be
  17 # used to endorse or promote products derived from this software without
  18 # specific prior written permission.
  19 #
  20 # THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
  21 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  22 # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  23 # PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
  24 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  27 # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  28 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  29 # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  30 # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31 # SUCH DAMAGE.
  32
  33 source ./functions.sh
  34 set -e
  35 set -x
  36
  37 requires jq --version
  38 requires qemu-img --version
  39 requires qemu-img map --help
  40
  41 out="test-sh-extents.out"
  42 expected="test-sh-extents.expected"
  43 files="$out $expected"
  44 rm -f $files
  45 cleanup_fn rm -f $files
  46
  47 do_test ()
  48 {
  49     # We use jq to normalize the output and convert it to plain text.
  50     nbdkit -v -U - sh - --run 'qemu-img map -f raw --output=json $nbd' |
  51         jq -c '.[] | {start:.start, length:.length, data:.data, zero:.zero}' \
  52            > $out
  53     if ! cmp $out $expected; then
  54         echo "$0: output did not match expected data"
  55         echo "expected:"
  56         cat $expected
  57         echo "output:"
  58         cat $out
  59         exit 1
  60     fi
  61 }
  62
  63 # Completely sparse disk.
  64 cat > $expected <<'EOF'
  65 {"start":0,"length":65536,"data":false,"zero":true}
  66 EOF
  67 do_test <<'EOF'
  68 case "$1" in
  69      thread_model) echo parallel ;;
  70      get_size) echo 64K ;;
  71      can_extents) exit 0 ;;
  72      extents)
  73          echo "0   64K   hole,zero"
  74          ;;
  75      *) exit 2 ;;
  76 esac
  77 EOF
  78
  79 # Completely allocated disk.
  80 # type field missing means allocated data.
  81 cat > $expected <<'EOF'
  82 {"start":0,"length":65536,"data":true,"zero":false}
  83 EOF
  84 do_test <<'EOF'
  85 case "$1" in
  86      thread_model) echo parallel ;;
  87      get_size) echo 64K ;;
  88      can_extents) exit 0 ;;
  89      extents)
  90          echo "0 64K"
  91          ;;
  92      *) exit 2 ;;
  93 esac
  94 EOF
  95
  96 # Completely allocated disk.
  97 # type=0
  98 cat > $expected <<'EOF'
  99 {"start":0,"length":65536,"data":true,"zero":false}
 100 EOF
 101 do_test <<'EOF'
 102 case "$1" in
 103      thread_model) echo parallel ;;
 104      get_size) echo 64K ;;
 105      can_extents) exit 0 ;;
 106      extents)
 107          echo "0 64K 0"
 108          ;;
 109      *) exit 2 ;;
 110 esac
 111 EOF
 112
 113 # Allocated data at the start of a 1M disk.
 114 cat > $expected <<'EOF'
 115 {"start":0,"length":32768,"data":true,"zero":false}
 116 {"start":32768,"length":1015808,"data":false,"zero":true}
 117 EOF
 118 do_test <<'EOF'
 119 case "$1" in
 120      thread_model) echo parallel ;;
 121      get_size) echo 1M ;;
 122      can_extents) exit 0 ;;
 123      extents)
 124          echo "0   32K"
 125          echo "32K 1015808 hole,zero"
 126          ;;
 127      *) exit 2 ;;
 128 esac
 129 EOF
 130
 131 # Zeroes at the start of a 1M disk.
 132 cat > $expected <<'EOF'
 133 {"start":0,"length":32768,"data":true,"zero":true}
 134 {"start":32768,"length":32768,"data":false,"zero":true}
 135 {"start":65536,"length":983040,"data":true,"zero":false}
 136 EOF
 137 do_test <<'EOF'
 138 case "$1" in
 139      thread_model) echo parallel ;;
 140      get_size) echo 1M ;;
 141      can_extents) exit 0 ;;
 142      extents)
 143          echo "0   32K    zero"
 144          echo "32K 32K    hole,zero"
 145          echo "64K 983040 "
 146          ;;
 147      *) exit 2 ;;
 148 esac
 149 EOF
 150
 151 # If can_extents is not defined, extents should never be called.
 152 cat > $expected <<'EOF'
 153 {"start":0,"length":65536,"data":true,"zero":false}
 154 EOF
 155 do_test <<'EOF'
 156 case "$1" in
 157      thread_model) echo parallel ;;
 158      get_size) echo 64K ;;
 159      extents) exit 1 ;;
 160      *) exit 2 ;;
 161 esac
 162 EOF