tests/test-multi-conn-name.sh

   1 #!/usr/bin/env bash
   2 # nbdkit
   3 # Copyright (C) 2018-2022 Red Hat Inc.
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  17 # used to endorse or promote products derived from this software without
  18 # specific prior written permission.
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  23 # PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
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  31 # SUCH DAMAGE.
  32
  33 # Demonstrate effect of multi-conn-exportname config flag
  34
  35 source ./functions.sh
  36 set -e
  37 set -x
  38
  39 requires_plugin sh
  40 requires_nbdsh_uri
  41 requires nbdsh -c 'print(h.set_opt_mode)'
  42 requires dd iflag=count_bytes </dev/null
  43
  44 files="test-multi-conn-name.out"
  45 rm -f $files
  46 cleanup_fn rm -f $files
  47
  48 fail=0
  49 export script='
  50 import os
  51
  52 uri = os.environ["uri"]
  53 h = {}
  54 for name in ["a", "b"]:
  55   for conn in [1, 2]:
  56     key = "%s%d" % (name, conn)
  57     h[key] = nbd.NBD()
  58     h[key].set_opt_mode(True)
  59     h[key].connect_uri(uri)
  60     h[key].set_export_name(name)
  61     h[key].opt_go()
  62 h["a1"].pread(1, 0)
  63 h["a2"].pwrite(b"A", 0)
  64 h["b1"].pread(1, 0)
  65 h["b2"].pwrite(b"B", 0, nbd.CMD_FLAG_FUA)
  66 print(bytes(h["a1"].pread(1, 0)))
  67 print(bytes(h["b1"].pread(1, 0)))
  68 '
  69
  70 # Without the knob we flush all exports
  71 nbdkit -vf -U - sh test-multi-conn-plugin.sh --filter=multi-conn \
  72   --run 'export uri; nbdsh -c "$script"' > test-multi-conn-name.out || fail=1
  73 diff -u <(cat <<\EOF
  74 b'A'
  75 b'B'
  76 EOF
  77          ) test-multi-conn-name.out || fail=1
  78 # But with the knob, our flush is specific to the correct export
  79 nbdkit -vf -U - sh test-multi-conn-plugin.sh --filter=multi-conn \
  80   multi-conn-exportname=true \
  81   --run 'export uri; nbdsh -c "$script"' > test-multi-conn-name.out || fail=1
  82 diff -u <(cat <<\EOF
  83 b'I'
  84 b'B'
  85 EOF
  86          ) test-multi-conn-name.out || fail=1
  87
  88 exit $fail