tests/qemu-iotests/083

   1 #!/bin/bash
   2 #
   3 # Test NBD client unexpected disconnect
   4 #
   5 # Copyright Red Hat, Inc. 2014
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 #
  20
  21 # creator
  22 owner=stefanha@redhat.com
  23
  24 seq=`basename $0`
  25 echo "QA output created by $seq"
  26
  27 here=`pwd`
  28 tmp=/tmp/$$
  29 status=1        # failure is the default!
  30
  31 # get standard environment, filters and checks
  32 . ./common.rc
  33 . ./common.filter
  34
  35 _supported_fmt generic
  36 _supported_proto nbd
  37 _supported_os Linux
  38
  39 # Pick a TCP port based on our pid.  This way multiple instances of this test
  40 # can run in parallel without conflicting.
  41 choose_tcp_port() {
  42         echo $((($$ % 31744) + 1024)) # 1024 <= port < 32768
  43 }
  44
  45 wait_for_tcp_port() {
  46         while ! (netstat --tcp --listening --numeric | \
  47                  grep "$1.*0\\.0\\.0\\.0:\\*.*LISTEN") 2>&1 >/dev/null; do
  48                 sleep 0.1
  49         done
  50 }
  51
  52 filter_nbd() {
  53         # nbd.c error messages contain function names and line numbers that are prone
  54         # to change.  Message ordering depends on timing between send and receive
  55         # callbacks sometimes, making them unreliable.
  56         #
  57         # Filter out the TCP port number since this changes between runs.
  58         sed -e 's#^.*nbd\.c:.*##g' \
  59             -e 's#nbd:127\.0\.0\.1:[^:]*:#nbd:127\.0\.0\.1:PORT:#g'
  60 }
  61
  62 check_disconnect() {
  63         event=$1
  64         when=$2
  65         negotiation=$3
  66         echo "=== Check disconnect $when $event ==="
  67         echo
  68
  69         port=$(choose_tcp_port)
  70
  71         cat > "$TEST_DIR/nbd-fault-injector.conf" <<EOF
  72 [inject-error]
  73 event=$event
  74 when=$when
  75 EOF
  76
  77         if [ "$negotiation" = "--classic-negotiation" ]; then
  78                 extra_args=--classic-negotiation
  79                 nbd_url="nbd:127.0.0.1:$port"
  80         else
  81                 nbd_url="nbd:127.0.0.1:$port:exportname=foo"
  82         fi
  83
  84         $PYTHON nbd-fault-injector.py $extra_args "127.0.0.1:$port" "$TEST_DIR/nbd-fault-injector.conf" 2>&1 >/dev/null &
  85         wait_for_tcp_port "127\\.0\\.0\\.1:$port"
  86         $QEMU_IO -c "read 0 512" "$nbd_url" 2>&1 | _filter_qemu_io | filter_nbd
  87
  88         echo
  89 }
  90
  91 for event in neg1 "export" neg2 request reply data; do
  92         for when in before after; do
  93                 check_disconnect "$event" "$when"
  94         done
  95
  96         # Also inject short replies from the NBD server
  97         case "$event" in
  98         neg1)
  99                 for when in 8 16; do
 100                         check_disconnect "$event" "$when"
 101                 done
 102                 ;;
 103         "export")
 104                 for when in 4 12 16; do
 105                         check_disconnect "$event" "$when"
 106                 done
 107                 ;;
 108         neg2)
 109                 for when in 8 10; do
 110                         check_disconnect "$event" "$when"
 111                 done
 112                 ;;
 113         reply)
 114                 for when in 4 8; do
 115                         check_disconnect "$event" "$when"
 116                 done
 117                 ;;
 118         esac
 119 done
 120
 121 # Also check classic negotiation without export information
 122 for when in before 8 16 24 28 after; do
 123         check_disconnect "neg-classic" "$when" --classic-negotiation
 124 done
 125
 126 # success, all done
 127 echo "*** done"
 128 rm -f $seq.full
 129 status=0