tests/test-blocksize.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
  36 sock1=`mktemp -u`
  37 sock2=`mktemp -u`
  38 files="blocksize1.img blocksize1.log $sock1 blocksize1.pid
  39        blocksize2.img blocksize2.log $sock2 blocksize2.pid"
  40 rm -f $files
  41
  42 # Prep images, and check that qemu-io understands the actions we plan on doing.
  43 # TODO: Until we implement NBD_INFO_BLOCK_SIZE, qemu-io does its own
  44 # read-modify-write at 512-byte alignment, while we'd like to ultimately test
  45 # 1-byte accesses
  46 truncate -s 10M blocksize1.img
  47 if ! qemu-io -f raw -c 'r 0 1' -c 'w -z 1000 2000' \
  48      -c 'w -P 0 1M 2M' -c 'discard 3M 4M' blocksize1.img; then
  49     echo "$0: missing or broken qemu-io"
  50     rm blocksize1.img
  51     exit 77
  52 fi
  53 truncate -s 10M blocksize2.img
  54
  55 # For easier debugging, dump the final log files before removing them
  56 # on exit.
  57 cleanup ()
  58 {
  59     echo "Log 1 file contents:"
  60     cat blocksize1.log || :
  61     echo "Log 2 file contents:"
  62     cat blocksize2.log || :
  63     rm -f $files
  64 }
  65 cleanup_fn cleanup
  66
  67 # Run two parallel nbdkit; to compare the logs and see what changes.
  68 start_nbdkit -P blocksize1.pid -U $sock1 \
  69        --filter=log file logfile=blocksize1.log blocksize1.img
  70 start_nbdkit -P blocksize2.pid -U $sock2 --filter=blocksize \
  71        --filter=log file logfile=blocksize2.log blocksize2.img \
  72        minblock=1024 maxdata=512k maxlen=1M
  73
  74 # Test behavior on short accesses.
  75 qemu-io -f raw -c 'r 1 1' -c 'w 10001 1' -c 'w -z 20001 1' \
  76          -c 'discard 30001 1' "nbd+unix://?socket=$sock1"
  77 qemu-io -f raw -c 'r 1 1' -c 'w 10001 1' -c 'w -z 20001 1' \
  78          -c 'discard 30001 1' "nbd+unix://?socket=$sock2"
  79
  80 # Read should round up (qemu-io may round to 512, but we must round to 1024
  81 grep 'connection=1 Read .* count=0x\(1\|200\) ' blocksize1.log ||
  82     { echo "qemu-io can't pass 1-byte reads"; exit 77; }
  83 grep 'connection=1 Read .* offset=0x0 count=0x400 ' blocksize2.log
  84 # Write should become read-modify-write
  85 grep 'connection=1 Write .* count=0x\(1\|200\) ' blocksize1.log ||
  86     { echo "qemu-io can't pass 1-byte writes"; exit 77; }
  87 grep 'connection=1 Read .* offset=0x2400 count=0x400 ' blocksize2.log
  88 grep 'connection=1 Write .* offset=0x2400 count=0x400 ' blocksize2.log
  89 # Zero should become read-modify-write
  90 if grep 'connection=1 Zero' blocksize2.log; then
  91     echo "filter should have converted short zero to write"
  92     exit 1
  93 fi
  94 grep 'connection=1 Read .* offset=0x4c00 count=0x400 ' blocksize2.log
  95 grep 'connection=1 Write .* offset=0x4c00 count=0x400 ' blocksize2.log
  96 # Trim should be discarded
  97 if grep 'connection=1 Trim' blocksize2.log; then
  98     echo "filter should have dropped too-small trim"
  99     exit 1
 100 fi
 101
 102 # Test behavior on overlarge accesses.
 103 qemu-io -f raw -c 'w -P 11 1048575 4094305' -c 'w -z 1050000 1100000' \
 104          -c 'r -P 0 1050000 1100000' -c 'r -P 11 3000000 1048577' \
 105          -c 'discard 7340031 2097153' "nbd+unix://?socket=$sock1"
 106 qemu-io -f raw -c 'w -P 11 1048575 4094305' -c 'w -z 1050000 1100000' \
 107          -c 'r -P 0 1050000 1100000' -c 'r -P 11 3000000 1048577' \
 108          -c 'discard 7340031 2097153' "nbd+unix://?socket=$sock2"
 109
 110 # Reads and writes should have been split.
 111 test "$(grep -c '\(Read\|Write\) .*count=0x80000 ' blocksize2.log)" -ge 10
 112 test "$(grep -c '\(Read\|Write\) .*count=0x[0-9a-f]\{6\} ' blocksize2.log)" = 0
 113 # Zero and trim should be split, but at different boundary
 114 grep 'Zero .*count=0x100000 ' blocksize2.log
 115 test "$(grep -c 'connection=2 Zero' blocksize2.log)" = 2
 116 if grep Trim blocksize1.log; then
 117     test "$(grep -c 'connection=2 Trim .*count=0x100000 ' blocksize2.log)" = 2
 118 fi
 119
 120 # Final sanity checks.
 121 if grep 'offset=0x[0-9a-f]*\([1235679abdef]00\|[0-9a-f]\(.[^0]\|[^0].\)\) ' \
 122         blocksize2.log; then
 123     echo "filter didn't align offset to 1024";
 124     exit 1;
 125 fi
 126 if grep 'count=0x[0-9a-f]*\([1235679abdef]00\|[0-9a-f]\(.[^0]\|[^0].\)\) ' \
 127         blocksize2.log; then
 128     echo"filter didn't align count to 512";
 129     exit 1;
 130 fi
 131 diff -u blocksize1.img blocksize2.img