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#!/bin/bash
#
# Test NBD client unexpected disconnect
#
# Copyright Red Hat, Inc. 2014
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# creator
owner=stefanha@redhat.com
seq=`basename $0`
echo "QA output created by $seq"
here=`pwd`
tmp=/tmp/$$
status=1 # failure is the default!
# get standard environment, filters and checks
. ./common.rc
. ./common.filter
_supported_fmt generic
_supported_proto nbd
_supported_os Linux
# Pick a TCP port based on our pid. This way multiple instances of this test
# can run in parallel without conflicting.
choose_tcp_port() {
echo $((($$ % 31744) + 1024)) # 1024 <= port < 32768
}
wait_for_tcp_port() {
while ! (netstat --tcp --listening --numeric | \
grep "$1.*0\\.0\\.0\\.0:\\*.*LISTEN") 2>&1 >/dev/null; do
sleep 0.1
done
}
filter_nbd() {
# nbd.c error messages contain function names and line numbers that are prone
# to change. Message ordering depends on timing between send and receive
# callbacks sometimes, making them unreliable.
#
# Filter out the TCP port number since this changes between runs.
sed -e 's#^.*nbd\.c:.*##g' \
-e 's#nbd:127\.0\.0\.1:[^:]*:#nbd:127\.0\.0\.1:PORT:#g' \
-e 's#\(exportname=foo\|PORT\): Failed to .*$#\1#'
}
check_disconnect() {
event=$1
when=$2
negotiation=$3
echo "=== Check disconnect $when $event ==="
echo
port=$(choose_tcp_port)
cat > "$TEST_DIR/nbd-fault-injector.conf" <<EOF
[inject-error]
event=$event
when=$when
EOF
if [ "$negotiation" = "--classic-negotiation" ]; then
extra_args=--classic-negotiation
nbd_url="nbd:127.0.0.1:$port"
else
nbd_url="nbd:127.0.0.1:$port:exportname=foo"
fi
$PYTHON nbd-fault-injector.py $extra_args "127.0.0.1:$port" "$TEST_DIR/nbd-fault-injector.conf" 2>&1 >/dev/null &
wait_for_tcp_port "127\\.0\\.0\\.1:$port"
$QEMU_IO -c "read 0 512" "$nbd_url" 2>&1 | _filter_qemu_io | filter_nbd
echo
}
for event in neg1 "export" neg2 request reply data; do
for when in before after; do
check_disconnect "$event" "$when"
done
# Also inject short replies from the NBD server
case "$event" in
neg1)
for when in 8 16; do
check_disconnect "$event" "$when"
done
;;
"export")
for when in 4 12 16; do
check_disconnect "$event" "$when"
done
;;
neg2)
for when in 8 10; do
check_disconnect "$event" "$when"
done
;;
reply)
for when in 4 8; do
check_disconnect "$event" "$when"
done
;;
esac
done
# Also check classic negotiation without export information
for when in before 8 16 24 28 after; do
check_disconnect "neg-classic" "$when" --classic-negotiation
done
# success, all done
echo "*** done"
rm -f $seq.full
status=0
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