tests/test-sh-extents.sh

   1 #!/usr/bin/env bash
   2 # nbdkit
   3 # Copyright Red Hat
   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_plugin sh
  38 requires jq --version
  39 requires qemu-img --version
  40 requires qemu-img map --help
  41
  42 out="test-sh-extents.out"
  43 expected="test-sh-extents.expected"
  44 files="$out $expected"
  45 rm -f $files
  46 cleanup_fn rm -f $files
  47
  48 do_test ()
  49 {
  50     # We use jq to normalize the output and convert it to plain text.
  51     nbdkit -v -U - sh - --run 'qemu-img map -f raw --output=json $nbd' |
  52         jq -c '.[] | {start:.start, length:.length, data:.data, zero:.zero}' \
  53            > $out
  54     if ! cmp $out $expected; then
  55         echo "$0: output did not match expected data"
  56         echo "expected:"
  57         cat $expected
  58         echo "output:"
  59         cat $out
  60         exit 1
  61     fi
  62 }
  63
  64 # Completely sparse disk.
  65 cat > $expected <<'EOF'
  66 {"start":0,"length":65536,"data":false,"zero":true}
  67 EOF
  68 do_test <<'EOF'
  69 case "$1" in
  70      thread_model) echo parallel ;;
  71      get_size) echo 64K ;;
  72      can_extents) exit 0 ;;
  73      extents)
  74          echo "0   64K   hole,zero"
  75          ;;
  76      *) exit 2 ;;
  77 esac
  78 EOF
  79
  80 # Completely allocated disk.
  81 # type field missing means allocated data.
  82 cat > $expected <<'EOF'
  83 {"start":0,"length":65536,"data":true,"zero":false}
  84 EOF
  85 do_test <<'EOF'
  86 case "$1" in
  87      thread_model) echo parallel ;;
  88      get_size) echo 64K ;;
  89      can_extents) exit 0 ;;
  90      extents)
  91          echo "0 64K"
  92          ;;
  93      *) exit 2 ;;
  94 esac
  95 EOF
  96
  97 # Completely allocated disk.
  98 # type=0
  99 cat > $expected <<'EOF'
 100 {"start":0,"length":65536,"data":true,"zero":false}
 101 EOF
 102 do_test <<'EOF'
 103 case "$1" in
 104      thread_model) echo parallel ;;
 105      get_size) echo 64K ;;
 106      can_extents) exit 0 ;;
 107      extents)
 108          echo "0 64K 0"
 109          ;;
 110      *) exit 2 ;;
 111 esac
 112 EOF
 113
 114 # Allocated data at the start of a 1M disk.
 115 cat > $expected <<'EOF'
 116 {"start":0,"length":32768,"data":true,"zero":false}
 117 {"start":32768,"length":1015808,"data":false,"zero":true}
 118 EOF
 119 do_test <<'EOF'
 120 case "$1" in
 121      thread_model) echo parallel ;;
 122      get_size) echo 1M ;;
 123      can_extents) exit 0 ;;
 124      extents)
 125          echo "0   32K"
 126          echo "32K 1015808 hole,zero"
 127          ;;
 128      *) exit 2 ;;
 129 esac
 130 EOF
 131
 132 # Zeroes at the start of a 1M disk.
 133 cat > $expected <<'EOF'
 134 {"start":0,"length":32768,"data":true,"zero":true}
 135 {"start":32768,"length":32768,"data":false,"zero":true}
 136 {"start":65536,"length":983040,"data":true,"zero":false}
 137 EOF
 138 do_test <<'EOF'
 139 case "$1" in
 140      thread_model) echo parallel ;;
 141      get_size) echo 1M ;;
 142      can_extents) exit 0 ;;
 143      extents)
 144          echo "0   32K    zero"
 145          echo "32K 32K    hole,zero"
 146          echo "64K 983040 "
 147          ;;
 148      *) exit 2 ;;
 149 esac
 150 EOF
 151
 152 # If can_extents is not defined, extents should never be called.
 153 cat > $expected <<'EOF'
 154 {"start":0,"length":65536,"data":true,"zero":false}
 155 EOF
 156 do_test <<'EOF'
 157 case "$1" in
 158      thread_model) echo parallel ;;
 159      get_size) echo 64K ;;
 160      extents) exit 1 ;;
 161      *) exit 2 ;;
 162 esac
 163 EOF