qemu-iotests: add 083 NBD client disconnect tests
This new test case uses nbd-fault-injector.py to simulate broken TCP connections at each stage in the NBD protocol. This way we can exercise block/nbd-client.c's socket error handling code paths. In particular, this serves as a regression test to make sure nbd-client.c doesn't cause an infinite loop by leaving its nbd_receive_reply() fd handler registered after the connection has been closed. This bug was fixed in an earlier patch. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Stefan Hajnoczi
parent
1e8ece0db3
commit
dc668ded10
129
tests/qemu-iotests/083
Executable file
129
tests/qemu-iotests/083
Executable file
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#!/bin/bash
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#
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# Test NBD client unexpected disconnect
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#
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# Copyright Red Hat, Inc. 2014
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# creator
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owner=stefanha@redhat.com
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seq=`basename $0`
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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_supported_fmt generic
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_supported_proto nbd
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_supported_os Linux
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# Pick a TCP port based on our pid. This way multiple instances of this test
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# can run in parallel without conflicting.
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choose_tcp_port() {
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echo $((($$ % 31744) + 1024)) # 1024 <= port < 32768
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}
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wait_for_tcp_port() {
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while ! (netstat --tcp --listening --numeric | \
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grep "$1.*0.0.0.0:\*.*LISTEN") 2>&1 >/dev/null; do
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sleep 0.1
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done
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}
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filter_nbd() {
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# nbd.c error messages contain function names and line numbers that are prone
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# to change. Message ordering depends on timing between send and receive
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# callbacks sometimes, making them unreliable.
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#
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# Filter out the TCP port number since this changes between runs.
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sed -e 's#^nbd.c:.*##g' \
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-e 's#nbd:127.0.0.1:[^:]*:#nbd:127.0.0.1:PORT:#g'
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}
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check_disconnect() {
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event=$1
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when=$2
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negotiation=$3
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echo "=== Check disconnect $when $event ==="
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echo
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port=$(choose_tcp_port)
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cat > "$TEST_DIR/nbd-fault-injector.conf" <<EOF
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[inject-error]
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event=$event
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when=$when
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EOF
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if [ "$negotiation" = "--classic-negotiation" ]; then
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extra_args=--classic-negotiation
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nbd_url="nbd:127.0.0.1:$port"
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else
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nbd_url="nbd:127.0.0.1:$port:exportname=foo"
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fi
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./nbd-fault-injector.py $extra_args "127.0.0.1:$port" "$TEST_DIR/nbd-fault-injector.conf" 2>&1 >/dev/null &
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wait_for_tcp_port "127.0.0.1:$port"
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$QEMU_IO -c "read 0 512" "$nbd_url" 2>&1 | _filter_qemu_io | filter_nbd
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echo
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}
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for event in neg1 "export" neg2 request reply data; do
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for when in before after; do
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check_disconnect "$event" "$when"
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done
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# Also inject short replies from the NBD server
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case "$event" in
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neg1)
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for when in 8 16; do
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check_disconnect "$event" "$when"
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done
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;;
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"export")
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for when in 4 12 16; do
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check_disconnect "$event" "$when"
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done
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;;
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neg2)
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for when in 8 10; do
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check_disconnect "$event" "$when"
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done
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;;
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reply)
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for when in 4 8; do
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check_disconnect "$event" "$when"
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done
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;;
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esac
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done
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# Also check classic negotiation without export information
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for when in before 8 16 24 28 after; do
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check_disconnect "neg-classic" "$when" --classic-negotiation
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done
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# success, all done
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echo "*** done"
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rm -f $seq.full
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status=0
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163
tests/qemu-iotests/083.out
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163
tests/qemu-iotests/083.out
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QA output created by 083
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=== Check disconnect before neg1 ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect after neg1 ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect 8 neg1 ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect 16 neg1 ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect before export ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect after export ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect 4 export ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect 12 export ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect 16 export ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect before neg2 ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect after neg2 ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
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no file open, try 'help open'
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=== Check disconnect 8 neg2 ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect 10 neg2 ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect before request ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
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no file open, try 'help open'
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=== Check disconnect after request ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
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no file open, try 'help open'
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=== Check disconnect before reply ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
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no file open, try 'help open'
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=== Check disconnect after reply ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
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no file open, try 'help open'
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=== Check disconnect 4 reply ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
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no file open, try 'help open'
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=== Check disconnect 8 reply ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
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no file open, try 'help open'
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=== Check disconnect before data ===
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qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
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no file open, try 'help open'
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=== Check disconnect after data ===
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read failed: Input/output error
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=== Check disconnect before neg-classic ===
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qemu-io: can't open device nbd:127.0.0.1:PORT: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect 8 neg-classic ===
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qemu-io: can't open device nbd:127.0.0.1:PORT: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect 16 neg-classic ===
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qemu-io: can't open device nbd:127.0.0.1:PORT: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect 24 neg-classic ===
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qemu-io: can't open device nbd:127.0.0.1:PORT: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect 28 neg-classic ===
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qemu-io: can't open device nbd:127.0.0.1:PORT: Could not open image: Invalid argument
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no file open, try 'help open'
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=== Check disconnect after neg-classic ===
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qemu-io: can't open device nbd:127.0.0.1:PORT: Could not read image for determining its format: Input/output error
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no file open, try 'help open'
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*** done
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@ -85,6 +85,7 @@
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079 rw auto
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081 rw auto
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082 rw auto quick
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083 rw auto
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085 rw auto quick
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086 rw auto quick
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087 rw auto quick
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