[ovs-dev] debugging "make check" failures

[ravi kerur]

Thanks Ethan. Core file generation is enabled. However, I do not see
any core files under failed test directory i.e
tests/testsuite.dir/0449. Is the generated core file available in that
directory or some place else? or it could be that ovs-vswitchd didn't
segfault at all?

openvswitch# ulimit -a
core file size          (blocks, -c) unlimited
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 62053
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 62053
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

Excerpts from testsuite.log file under failed test...

/ofproto-dpif.at:345: cat ofctl_monitor.log
./ofproto-dpif.at:357: ovs-ofctl monitor br0 65534 -P nxm --detach
--pidfile 2> ofctl_monitor.log
success
2012-06-27T17:16:36Z|00001|jsonrpc|WARN|unix:/root/mpls_vlan_qinq_dev_1e/openvswitch/tests/testsuite.dir/0449/ovs-vswitchd.24497.ctl:
receive error: Connection reset by peer
2012-06-27T17:16:36Z|00002|unixctl|WARN|error communicating with
unix:/root/mpls_vlan_qinq_dev_1e/openvswitch/tests/testsuite.dir/0449/ovs-vswitchd.24497.ctl:
Connection reset by peer
ovs-appctl: ovs-vswitchd: transaction error (Connection reset by peer)
ovs-appctl: cannot read pidfile
"/root/mpls_vlan_qinq_dev_1e/openvswitch/tests/testsuite.dir/0449/ovs-vswitchd.pid"
(No such process)
./ofproto-dpif.at:363: ovs_wait_cond () { ovs-appctl -t ovs-ofctl exit
}


On Tue, Jun 26, 2012 at 6:08 PM, Ethan Jackson <ethan at nicira.com> wrote:
> Make sure you've enabled core files
>
> ulimit -a
> ulimit -c unlimited
>
> Ethan
>
> On Tue, Jun 26, 2012 at 5:49 PM, ravi kerur <rkerur at gmail.com> wrote:
>> Thanks Ben, I don't remember seeing core file under
>> tests/testsuite.dir/0449 directory. I will double-check, if its
>> available it will be definitely helpful.
>>
>> On Tue, Jun 26, 2012 at 5:10 PM, Ben Pfaff <blp at nicira.com> wrote:
>>> On Tue, Jun 26, 2012 at 05:08:43PM -0700, ravi kerur wrote:
>>>> The problem is that ovs-vswitchd crashes when eth_type = 0x8847/0x8848
>>>> and happens only in the automation i.e "make check", or "make
>>>> dist-check", since user-space code has been successfully tested
>>>> manually and I couldn't find a way to run gdb during automation not
>>>> sure how to debug this.
>>>
>>> I usually run GDB on the core file.
>> _______________________________________________
>> dev mailing list
>> dev at openvswitch.org
>> http://openvswitch.org/mailman/listinfo/dev