tests/test-cache.sh

   1 #!/usr/bin/env bash
   2 # nbdkit
   3 # Copyright (C) 2018 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 guestfish --version
  38
  39 sock=`mktemp -u`
  40 files="cache.img $sock cache.pid"
  41 rm -f $files
  42 cleanup_fn rm -f $files
  43
  44 # Create an empty base image.
  45 truncate -s 1G cache.img
  46
  47 # Run nbdkit with the caching filter.
  48 start_nbdkit -P cache.pid -U $sock --filter=cache file cache.img
  49
  50 # Open the overlay and perform some operations.
  51 guestfish --format=raw -a "nbd://?socket=$sock" <<'EOF'
  52   run
  53   part-disk /dev/sda gpt
  54   mkfs ext4 /dev/sda1
  55   mount /dev/sda1 /
  56   fill-dir / 10000
  57   fill-pattern "abcde" 5M /large
  58   write /hello "hello, world"
  59 EOF
  60
  61 # Check the last files we created exist.
  62 guestfish --ro -a cache.img -m /dev/sda1 <<'EOF'
  63   cat /hello
  64   cat /large | cat >/dev/null
  65 EOF