tests/test-offset-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 # Unfortunately the output of this test depends on the PAGE_SIZE
  34 # defined in common/allocators/sparse.c and would change (breaking the
  35 # test) if we ever changed that definition.
  36
  37 source ./functions.sh
  38 set -e
  39 set -x
  40
  41 requires_run
  42 requires jq --version
  43 requires qemu-img --version
  44 requires qemu-img map --help
  45
  46 out="test-offset-extents.out"
  47 expected="test-offset-extents.expected"
  48 files="$out $expected"
  49 rm -f $files
  50 cleanup_fn rm -f $files
  51
  52 do_test ()
  53 {
  54     # We use jq to normalize the output and convert it to plain text.
  55     nbdkit -U - \
  56            --filter=offset \
  57            data "$1" size="$2" \
  58            offset=1024 range=65536 \
  59            --run 'qemu-img map -f raw --output=json $nbd' |
  60         jq -c '.[] | {start:.start, length:.length, data:.data, zero:.zero}' \
  61            > $out
  62     if ! cmp $out $expected; then
  63         echo "$0: output did not match expected data"
  64         echo "expected:"
  65         cat $expected
  66         echo "output:"
  67         cat $out
  68         exit 1
  69     fi
  70 }
  71
  72 # Completely sparse disk.
  73 cat > $expected <<'EOF'
  74 {"start":0,"length":65536,"data":false,"zero":true}
  75 EOF
  76 do_test "" 1M
  77
  78 # Completely allocated disk.
  79 #
  80 # We have to write a non-zero byte @32767 so that the sparse array
  81 # doesn't detect the range from 1024-32767 as being all zeroes.
  82 cat > $expected <<'EOF'
  83 {"start":0,"length":65536,"data":true,"zero":false}
  84 EOF
  85 do_test "1 @32767 1 @32768 1 @65536 1 @98304 1" 128K
  86
  87 # Allocated data at the start of a 1M disk.
  88 cat > $expected <<'EOF'
  89 {"start":0,"length":31744,"data":true,"zero":false}
  90 {"start":31744,"length":33792,"data":false,"zero":true}
  91 EOF
  92 do_test "1 @32767 1" 1M
  93
  94 # Allocated zeroes at the start of the disk.
  95 cat > $expected <<'EOF'
  96 {"start":0,"length":31744,"data":true,"zero":true}
  97 {"start":31744,"length":33792,"data":false,"zero":true}
  98 EOF
  99 do_test "0" 1M