<div dir="ltr">Hello Vicente,<br><div class="gmail_extra"><br></div><div class="gmail_extra">Thank you for your reply, you'll find my answer below<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Nov 28, 2013 at 12:03 AM, Vicente Hernando <span dir="ltr"><<a href="mailto:vhernando@systemonenoc.com" target="_blank">vhernando@systemonenoc.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>Hello,<br>
<br>
also full steps to crash kamailio and reproduce the error would be
good.</div></div></blockquote><div><br></div><div>Here is the architecture<br><br></div><div>A <--> Asterisk <--> Kamailio 1 <---> kamailio2 <--- ISP---> mobile<br><br></div><div>Kamailio 1 & 2 are connected to a local redis server<br>
</div><div>1/ I restarted the redis server<br></div><div>2/ From the mobile I made a call to A then cancelled it. In the script of kamailio1, if a call has missed or failed, it sends a message to the redis. And in this case, it crashes<br>
<br></div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000"><div><div class="im"><br>
<br>
<br>
On 11/27/2013 11:35 PM, Daniel-Constantin Mierla wrote:<br>
</div></div><div class="im">
<blockquote type="cite">
Hello,<br>
<br>
can you give the full output for 'bt full' with gdb on the core
file? You gave only partial list of the frames, not being enough
to see the execution trace.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<div>On 11/27/13 6:52 PM, Tuan Viet Nguyen
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>
<div>
<div>
<div>
<div>Hello,<br>
<br>
</div>
I'll try to shut down the redis server to test the
behavior of kamailio and it has crashed if a call is
received and then cancelled. <br>
<br>
<b>1/The kamailio version is 4.0.4</b><br>
<br>
</div>
<div><b>2/ Kamailio log </b><br>
</div>
<div>/usr/local/sbin/kamailio[25333]: ERROR: ndb_redis
[redis_client.c:364]: redisc_exec(): Redis error:
Server closed the connection<br>
/usr/local/sbin/kamailio[25361]: : <core>
[pass_fd.c:293]: receive_fd(): ERROR: receive_fd: EOF
on 13<br>
/usr/local/sbin/kamailio[25328]: ALERT: <core>
[main.c:788]: handle_sigs(): child process 25333
exited by a signal 11<br>
/usr/local/sbin/kamailio[25328]: ALERT: <core>
[main.c:791]: handle_sigs(): core was generated<br>
<br>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</blockquote></div>
I assume you disconnect redis server and don't reconnect it. It is
that correct?<br>
<br>
Then this line is an error but it should recover from that. I
probably should set this as a warning instead an error.<div class="im"><br>
/usr/local/sbin/kamailio[25333]: ERROR: ndb_redis
[redis_client.c:364]: redisc_exec(): Redis error: Server closed the
connection<br></div></div></blockquote><div><br></div><div>Yes, it has been restarted<br> <br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"><div class="im">
<br>
</div><div class="im"><blockquote type="cite">
<blockquote type="cite">
<div dir="ltr">
<div>
<div>
<div>
<div> </div>
<u><b>3/ Interesting information in the core</b></u><br>
#3 0x00007fc79412893d in redisvCommand (c=0x64657461,
format=0x9 <Address 0x9 out of bounds>, ap=0x30,
ap@entry=0x7fff0ff56aa8) at hiredis.c:1304<br>
No locals.<br>
#4 0x00007fc794341713 in redisc_exec
(srv=srv@entry=0x7fff0ff56be0,
res=res@entry=0x7fff0ff56c00,
cmd=cmd@entry=0x7fff0ff56bf0) at redis_client.c:368<br>
rsrv = 0x7fc794565150<br>
rpl = 0x7fc7946fab70<br>
c = 0 '\000'<br>
ap = {{gp_offset = 48, fp_offset = 48,
overflow_arg_area = 0x7fff0ff56bb0, reg_save_area =
0x7fff0ff56ac0}}<br>
__FUNCTION__ = "redisc_exec"<br>
#5 0x00007fc79433b781 in w_redis_cmd5
(msg=<optimized out>, ssrv=<optimized out>,
scmd=<optimized out>, sargv1=<optimized
out>, sargv2=0x7fc7946f7bf0 "p\243_\224\307\177",
sres=0x7fc7946f7c50 " \253_\224\307\177") at
ndb_redis_mod.c:250<br>
s = {{s = 0x7fc7945fb300 "kamailio_redis", len =
14}, {s = 0x7fc7945f5f50 "PUBLISH %s %s", len = 13}, {s
= 0x7fc7945fab20 "r", len = 1}}<br>
arg1 = {s = 0x7fc7945f5f80 "notification", len =
12}<br>
arg2 = {<br>
s = 0x7fc794551c60 "info XXX"..., <br>
len = 212}<br>
c1 = 0 '\000'<br>
c2 = 0 '\000'<br>
__FUNCTION__ = "w_redis_cmd5"<br>
<br>
<br>
</div>
</div>
</div>
</div>
</blockquote>
</blockquote></div>
In the source code:<br>
<br>
rpl->rplRedis = redisvCommand(rsrv->ctxRedis, cmd->s,
ap );<br>
if(rpl->rplRedis == NULL)<br>
{<br>
/* null reply, reconnect and try again */<br>
if(rsrv->ctxRedis->err)<br>
{<br>
LM_ERR("Redis error: %s\n",
rsrv->ctxRedis->errstr);<br>
}<br>
if(redisc_reconnect_server(rsrv)==0)<br>
{<br>
rpl->rplRedis = redisvCommand(rsrv->ctxRedis,
cmd->s, ap);<br>
}<br>
}<br>
<br>
First redisvCommand executes but returns nothing. Then it shows a
redis error.<br>
<br>
It tries to reconnect and it manages to connect ?? because it shows
no more errors.<br>
<br>
And then executes redisvCommand again and crashes.<br>
<br>
If server is down it should not be able to connect and so not to
execute redisvCommand again.<br></div></blockquote><div><br></div><div>According to the core, we MUST be in this case <b>if(redisc_reconnect_server(rsrv)==0)<br></b></div><div>But I am wondering how the first redisvCommand can succeed before the reconnection ? (the connection kamailio1 <-> redis has already been taken down). Does all the redis context always there when we first call redisvCommand? <br>
</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000">
<br>
<br>
May be I would get more clues with more information.<br>
<br>
Regards,<br>
Vicente.</div></blockquote><div><br></div><div>Thank you<br></div><div>Regards,<br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"><div class="im"><br>
<br>
<blockquote type="cite">
<blockquote type="cite">
<div dir="ltr">
<div>
<div>
<div> </div>
I've found one of post that this issue has been fixed but
it seems that it's always the case ..<br>
<a href="http://www.mail-archive.com/search?l=sr-users@lists.sip-router.org&q=subject:%22Re%3A+%5BSR-Users%5D+ndb_redis+module+fails+after+a+while%22" target="_blank">http://www.mail-archive.com/search?l=sr-users@lists.sip-router.org&q=subject:%22Re%3A+%5BSR-Users%5D+ndb_redis+module+fails+after+a+while%22</a><br>
<br>
</div>
Do you have any idea? <br>
</div>
Thank you<br>
</div>
<br>
<fieldset></fieldset>
<br>
<pre>_______________________________________________
sr-dev mailing list
<a href="mailto:sr-dev@lists.sip-router.org" target="_blank">sr-dev@lists.sip-router.org</a>
<a href="http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev" target="_blank">http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev</a>
</pre>
</blockquote>
<br>
<pre cols="72">--
Daniel-Constantin Mierla - <a href="http://www.asipto.com" target="_blank">http://www.asipto.com</a>
<a href="http://twitter.com/#%21/miconda" target="_blank">http://twitter.com/#!/miconda</a> - <a href="http://www.linkedin.com/in/miconda" target="_blank">http://www.linkedin.com/in/miconda</a></pre>
<br>
<fieldset></fieldset>
<br>
<pre>_______________________________________________
sr-dev mailing list
<a href="mailto:sr-dev@lists.sip-router.org" target="_blank">sr-dev@lists.sip-router.org</a>
<a href="http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev" target="_blank">http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev</a>
</pre>
</blockquote>
<br>
</div></div>
</blockquote></div><br></div></div>