tests/test-readahead-copy.sh

   1 #!/usr/bin/env bash
   2 # nbdkit
   3 # Copyright (C) 2018-2020 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
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   8 #
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  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,
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  26 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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  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_run
  38 requires nbdcopy --version
  39
  40 files="readahead-copy1.img readahead-copy2.img"
  41 rm -f $files
  42 cleanup_fn rm -f $files
  43
  44 # Run nbdkit with and without the readahead filter and a very sparse
  45 # disk with bytes scattered around.  Compare the two outputs which
  46 # should be identical.
  47 data="            1
  48          @0x10001 2
  49         @0x100020 3
  50        @0x1000301 4
  51       @0x10004020 5
  52       @0x20050301 6
  53       @0x40604020 7
  54       @0x87050300 8
  55      @0x100000000 9 "
  56
  57 nbdkit -v -U - --filter=readahead data "$data"  \
  58        --run 'nbdcopy "$uri" readahead-copy1.img'
  59 nbdkit -v -U -                    data "$data" \
  60        --run 'nbdcopy "$uri" readahead-copy2.img'
  61
  62 # Check the output.
  63 cmp readahead-copy{1,2}.img
  64