Hi Daniel, <br><br>I'm using postgres 8.4 at the server and libpq5 library for the client. I've been testing again and the problem is that after a db restart (no matter if done through a service restart or having t down for some time), the PQstatus(CON_CONNECTION(_con)) function returns a CONNECTION_OK and therefore it doesn't try to reconnect. It's on the second attempt of the mt_reload that it returns the correct CONNECTION_BAD value, and reconnection at that point works perfectly well.<br>
<br>First attempt after db restart (I've added a dbg message if we get a CONNECTION_OK):<br><br>Jan 16 12:03:00 kam-test ./kamailio[22214]: DEBUG: db_postgres [km_dbase.c:129]: connection OK<br>Jan 16 12:03:00 kam-test ./kamailio[22214]: DEBUG: db_postgres [km_dbase.c:155]: sending query ok: 0x92f888 - [select tname,tprefix,tvalue from mtree order by tname]<br>
Jan 16 12:03:00 kam-test ./kamailio[22214]: DEBUG: <core> [db_res.c:118]: allocate 48 bytes for result set at 0x94cd08<br>Jan 16 12:03:00 kam-test ./kamailio[22214]: DEBUG: db_postgres [km_dbase.c:222]: 0x92f888 PQresultStatus(PGRES_FATAL_ERROR) PQgetResult(0x1a30d10)<br>
Jan 16 12:03:00 kam-test ./kamailio[22214]: ERROR: db_postgres [km_dbase.c:238]: 0x92f888 - invalid query, execution aborted<br>Jan 16 12:03:00 kam-test ./kamailio[22214]: ERROR: db_postgres [km_dbase.c:239]: 0x92f888 - PQresultStatus(PGRES_FATAL_ERROR)<br>
Jan 16 12:03:00 kam-test ./kamailio[22214]: ERROR: db_postgres [km_dbase.c:240]: 0x92f888: server closed the connection unexpectedly#012#011This probably means the server terminated abnormally#012#011before or while processing the request.#012<br>
<br>Second attempt:<br><br>Jan 16 12:03:08 kam-test ./kamailio[22214]: DEBUG: db_postgres [km_dbase.c:132]: connection reset<br>Jan 16 12:03:08 kam-test ./kamailio[22214]: DEBUG: db_postgres [km_dbase.c:315]: PQclear(0x1a30d10) result set<br>
Jan 16 12:03:08 kam-test ./kamailio[22214]: DEBUG: db_postgres [km_dbase.c:155]: sending query ok: 0x92f888 - [select tname,tprefix,tvalue from mtree order by tname]<br><br>Thanks!<br><br>Javi<br><br><br><br><div class="gmail_quote">
On Fri, Jan 14, 2011 at 11:42 AM, Daniel-Constantin Mierla <span dir="ltr"><<a href="mailto:miconda@gmail.com">miconda@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000">
Hello,<br>
<br>
what version of postgres and postgres client library are you using?<br>
<br>
According to the docs from devel manual, this is the function that
should be used to reconnect:<br>
<br>
<dt><code>PQreset</code>
</dt>
<dd>
Resets the communication channel to the server.
<pre>void PQreset(PGconn *conn);
</pre>
This function will close the connection
to the server and attempt to reestablish a new
connection to the same server, using all the same
parameters previously used. This may be useful for
error recovery if a working connection is lost.</dd>
<br>
<br>
You may see more here:<br>
<a href="http://www.network-theory.co.uk/docs/postgresql/vol2/DatabaseConnectionControlFunctions.html" target="_blank">http://www.network-theory.co.uk/docs/postgresql/vol2/DatabaseConnectionControlFunctions.html</a><br>
<br>
Somehow seems not to work in this case. Can you try also with a
shorter down time for postgres server, like a normal restart? Would
be intrested to see if the client side loses somehow connection
parameters due to long time unconnected.<br>
<br>
Cheers,<br><font color="#888888">
Daniel</font><div><div></div><div class="h5"><br>
<br>
On 1/14/11 11:15 AM, Javier Gallart wrote:
<blockquote type="cite">Hi Daniel<br>
<br>
<br>
this is my test:<br>
<br>
1- Kamailio starts and correctly loads the mtree <br>
2- I make whatever modification in the tree and reload with
mt_reload<br>
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: db_postgres
[km_dbase.c:153]: sending query ok: 0x92f880 - [select
tname,tprefix,tvalue from mtree order by tname]<br>
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:118]: allocate 48 bytes for result set at 0x94cd00<br>
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: db_postgres
[km_dbase.c:220]: 0x92f880 PQresultStatus(PGRES_TUPLES_OK)
PQgetResult(0x29f05f0)<br>
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: db_postgres
[km_res.c:108]: 3 columns returned from the query<br>
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:155]: allocate 24 bytes for result names at 0x94cc60<br>
[....]<br>
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: db_postgres
[km_res.c:267]: freeing row buffer at 0x94c940<br>
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: mtree
[mtree.c:738]: adding new tname [1]<br>
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:54]: freeing 3 rows<br>
[...]<br>
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:94]: freeing result names at 0x94cc60<br>
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:99]: freeing result types at 0x94cbc0<br>
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:136]: freeing result set at 0x94cd00<br>
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: db_postgres
[km_dbase.c:313]: PQclear(0x29f05f0) result set<br>
<br>
3. Postgres DB restarts (either through restart, or /stop/wait a
minute/start)<br>
No log is written in Kamailio when this happens.<br>
<br>
4.- I try again to reload the tree, and these are the logs:<br>
Jan 14 04:21:42 kam-test ./kamailio[31205]: DEBUG: db_postgres
[km_dbase.c:153]: sending query ok: 0x92f880 - [select
tname,tprefix,tvalue from mtree order by tname]<br>
Jan 14 04:21:42 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:118]: allocate 48 bytes for result set at 0x94cd00<br>
Jan 14 04:21:42 kam-test ./kamailio[31205]: DEBUG: db_postgres
[km_dbase.c:220]: 0x92f880 PQresultStatus(PGRES_FATAL_ERROR)
PQgetResult(0x29ef0a0)<br>
Jan 14 04:21:42 kam-test ./kamailio[31205]: ERROR: db_postgres
[km_dbase.c:236]: 0x92f880 - invalid query, execution aborted<br>
Jan 14 04:21:42 kam-test ./kamailio[31205]: ERROR: db_postgres
[km_dbase.c:237]: 0x92f880 - PQresultStatus(PGRES_FATAL_ERROR)<br>
Jan 14 04:21:42 kam-test ./kamailio[31205]: ERROR: db_postgres
[km_dbase.c:238]: 0x92f880: server closed the connection
unexpectedly#012#011This probably means the server terminated
abnormally#012#011before or while processing the request.#012<br>
Jan 14 04:21:42 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:81]: freeing 0 columns<br>
Jan 14 04:21:42 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:136]: freeing result set at 0x94cd00<br>
Jan 14 04:21:42 kam-test ./kamailio[31205]: ERROR: mtree
[mtree_mod.c:633]: Error while fetching result<br>
Jan 14 04:21:42 kam-test ./kamailio[31205]: ERROR: db_postgres
[km_dbase.c:329]: invalid parameter value<br>
Jan 14 04:21:42 kam-test ./kamailio[31205]: ERROR: mtree
[mtree_mod.c:744]: cannot re-load info from database<br>
<br>
Thanks in advance<br>
<br>
<br>
Regards<br>
<br>
Javi<br>
<br>
<div class="gmail_quote">On Thu, Jan 13, 2011 at 1:56 PM,
Daniel-Constantin Mierla <span dir="ltr"><<a href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000"> Can you send the log
messages (debug=3) for that moment (restart of pg server and
making a new call/registration)?<br>
<br>
Daniel
<div>
<div><br>
<br>
On 1/13/11 12:00 PM, Javier Gallart wrote: </div>
</div>
<blockquote type="cite">
<div>
<div>Hi Daniel<br>
<br>
I have just tested it and I'm getting the same
results. This is the kamailio version I'm testing:<br>
root@kam-test:/usr/local/kamailio/sbin# ./kamailio -V<br>
version: kamailio 3.2.0-dev2 (x86_64/linux) 35568f<br>
<br>
Thanks!<br>
<br>
Javi<br>
<br>
<br>
<div class="gmail_quote">On Tue, Jan 4, 2011 at 3:46
PM, Javier Gallart <span dir="ltr"><<a href="mailto:jgallartm@gmail.com" target="_blank">jgallartm@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Hi list
<div><br>
</div>
<div>we have been testing the mtree module. We do
periodical reloads of the mtree table with the
"mi mt_reload" command through xmlrpc. It works
fine except when the db is restarted. If we
manually restart the db and then try the
mt_reload commands we get this error:</div>
<div>
<div>Jan 4 09:13:17
server /usr/local/kamailio-3.1.1/sbin/kamailio[28534]:
ERROR: db_postgres [km_dbase.c:152]: 0xa6a490
PQsendQuery Error: server closed the
connection unexpectedly#012#011This probably
means the server terminated
abnormally#012#011before or while processing
the request.#012 Query: select
partition,prefix,route from trees order by
partition</div>
<div>Jan 4 09:13:17 server
/usr/local/kamailio-3.1.1/sbin/kamailio[28534]:
ERROR: <core> [db_query.c:101]: error
while submitting query</div>
<div>Jan 4 09:13:17 server
/usr/local/kamailio-3.1.1/sbin/kamailio[28534]:
ERROR: mtree [mtree_mod.c:622]: Error while
querying db</div>
<div>Jan 4 09:13:17 server
/usr/local/kamailio-3.1.1/sbin/kamailio[28534]:
ERROR: mtree [mtree_mod.c:738]: cannot re-load
info from database</div>
</div>
<div><br>
</div>
<div>Is there a way to reconnect to the db before
sending that command?</div>
<div><br>
</div>
<div>Thanks in advance</div>
<div><br>
</div>
<div>Regards</div>
<div><br>
</div>
<div>Javi</div>
<div><br>
</div>
</blockquote>
</div>
<br>
</div>
</div>
<pre><fieldset></fieldset>
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<pre cols="72">--
Daniel-Constantin Mierla
Kamailio (OpenSER) Advanced Training
Jan 24-26, 2011, Irvine, CA, USA
<a href="http://www.asipto.com" target="_blank">http://www.asipto.com</a></pre>
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<pre cols="72">--
Daniel-Constantin Mierla
Kamailio (OpenSER) Advanced Training
Jan 24-26, 2011, Irvine, CA, USA
<a href="http://www.asipto.com" target="_blank">http://www.asipto.com</a></pre>
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