tests/test-rate-dynamic.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_run
  38 requires_nbdcopy
  39
  40 files="rate-dynamic.img rate-dynamic.time rate-dynamic.err rate-dynamic.txt"
  41 rm -f $files
  42 cleanup_fn rm -f $files
  43
  44 # This should take no less than 20 seconds to run:
  45 #   (8 * 25 * 1024 * 1024) / (10 * 1024 * 1024) = 20
  46 # but because the bucket is full at the start the filter will
  47 # burst for a couple of seconds to begin with, therefore the
  48 # expected minimum time is more like 18-19 seconds.
  49 #
  50 # However if the dynamic rate isn't being picked up then
  51 # it will take much longer (approx 200 seconds).
  52 #
  53 # Note that we use the blocksize filter because nbdcopy issues very
  54 # large requests, causing lumpy long sleeps.  The filter breaks these
  55 # data requests up.
  56
  57 echo 10M > rate-dynamic.txt
  58
  59 start_t=$SECONDS
  60 nbdkit -U - \
  61        --filter=blocksize --filter=rate \
  62        pattern 25M \
  63        maxdata=65536 \
  64        rate=1M rate-file=rate-dynamic.txt \
  65        --run 'nbdcopy "$uri" rate-dynamic.img'
  66 end_t=$SECONDS
  67
  68 seconds=$(( end_t - start_t ))
  69 if [ "$seconds" -lt 18 ]; then
  70     echo "$0: rate filter failed: command took $seconds seconds, expected about 20"
  71     exit 1
  72 fi
  73 if [ "$seconds" -gt 180 ]; then
  74     echo "$0: rate filter failed: command took $seconds seconds, expected about 20"
  75     exit 1
  76 fi