16 Jan
2011
16 Jan
'11
11:09 p.m.
Hello,
made a commit to fix in such case, when the broken connection is
reported after doing actually the query, attempting to reconnect then.
Let me know if works now.
Cheers,
Daniel
On 1/16/11 6:17 PM, Javier Gallart wrote:
Hi Daniel,
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.
First attempt after db restart (I've added a dbg message if we get a
CONNECTION_OK):
Jan 16 12:03:00 kam-test ./kamailio[22214]: DEBUG: db_postgres
[km_dbase.c:129]: connection OK
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]
Jan 16 12:03:00 kam-test ./kamailio[22214]: DEBUG: <core>
[db_res.c:118]: allocate 48 bytes for result set at 0x94cd08
Jan 16 12:03:00 kam-test ./kamailio[22214]: DEBUG: db_postgres
[km_dbase.c:222]: 0x92f888 PQresultStatus(PGRES_FATAL_ERROR)
PQgetResult(0x1a30d10)
Jan 16 12:03:00 kam-test ./kamailio[22214]: ERROR: db_postgres
[km_dbase.c:238]: 0x92f888 - invalid query, execution aborted
Jan 16 12:03:00 kam-test ./kamailio[22214]: ERROR: db_postgres
[km_dbase.c:239]: 0x92f888 - PQresultStatus(PGRES_FATAL_ERROR)
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
Second attempt:
Jan 16 12:03:08 kam-test ./kamailio[22214]: DEBUG: db_postgres
[km_dbase.c:132]: connection reset
Jan 16 12:03:08 kam-test ./kamailio[22214]: DEBUG: db_postgres
[km_dbase.c:315]: PQclear(0x1a30d10) result set
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]
Thanks!
Javi
On Fri, Jan 14, 2011 at 11:42 AM, Daniel-Constantin Mierla
<miconda(a)gmail.com <mailto:miconda@gmail.com>> wrote:
Hello,
what version of postgres and postgres client library are you using?
According to the docs from devel manual, this is the function that
should be used to reconnect:
|PQreset|
Resets the communication channel to the server.
void PQreset(PGconn *conn);
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.
You may see more here:
http://www.network-theory.co.uk/docs/postgresql/vol2/DatabaseConnectionCont…
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.
Cheers,
Daniel
On 1/14/11 11:15 AM, Javier Gallart wrote:
--
Daniel-Constantin Mierla
Kamailio (OpenSER) Advanced Training
Jan 24-26, 2011, Irvine, CA, USA
http://www.asipto.com
Hi Daniel
this is my test:
1- Kamailio starts and correctly loads the mtree
2- I make whatever modification in the tree and reload with mt_reload
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]
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:118]: allocate 48 bytes for result set at 0x94cd00
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: db_postgres
[km_dbase.c:220]: 0x92f880 PQresultStatus(PGRES_TUPLES_OK)
PQgetResult(0x29f05f0)
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: db_postgres
[km_res.c:108]: 3 columns returned from the query
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:155]: allocate 24 bytes for result names at 0x94cc60
[....]
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: db_postgres
[km_res.c:267]: freeing row buffer at 0x94c940
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: mtree
[mtree.c:738]: adding new tname [1]
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:54]: freeing 3 rows
[...]
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:94]: freeing result names at 0x94cc60
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:99]: freeing result types at 0x94cbc0
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:136]: freeing result set at 0x94cd00
Jan 14 04:19:06 kam-test ./kamailio[31205]: DEBUG: db_postgres
[km_dbase.c:313]: PQclear(0x29f05f0) result set
3. Postgres DB restarts (either through restart, or /stop/wait a
minute/start)
No log is written in Kamailio when this happens.
4.- I try again to reload the tree, and these are the logs:
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]
Jan 14 04:21:42 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:118]: allocate 48 bytes for result set at 0x94cd00
Jan 14 04:21:42 kam-test ./kamailio[31205]: DEBUG: db_postgres
[km_dbase.c:220]: 0x92f880 PQresultStatus(PGRES_FATAL_ERROR)
PQgetResult(0x29ef0a0)
Jan 14 04:21:42 kam-test ./kamailio[31205]: ERROR: db_postgres
[km_dbase.c:236]: 0x92f880 - invalid query, execution aborted
Jan 14 04:21:42 kam-test ./kamailio[31205]: ERROR: db_postgres
[km_dbase.c:237]: 0x92f880 - PQresultStatus(PGRES_FATAL_ERROR)
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
Jan 14 04:21:42 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:81]: freeing 0 columns
Jan 14 04:21:42 kam-test ./kamailio[31205]: DEBUG: <core>
[db_res.c:136]: freeing result set at 0x94cd00
Jan 14 04:21:42 kam-test ./kamailio[31205]: ERROR: mtree
[mtree_mod.c:633]: Error while fetching result
Jan 14 04:21:42 kam-test ./kamailio[31205]: ERROR: db_postgres
[km_dbase.c:329]: invalid parameter value
Jan 14 04:21:42 kam-test ./kamailio[31205]: ERROR: mtree
[mtree_mod.c:744]: cannot re-load info from database
Thanks in advance
Regards
Javi
On Thu, Jan 13, 2011 at 1:56 PM, Daniel-Constantin Mierla
<miconda(a)gmail.com <mailto:miconda@gmail.com>> wrote:
Can you send the log messages (debug=3) for that moment
(restart of pg server and making a new call/registration)?
Daniel
On 1/13/11 12:00 PM, Javier Gallart wrote:
--
Daniel-Constantin Mierla
Kamailio (OpenSER) Advanced Training
Jan 24-26, 2011, Irvine, CA, USA
http://www.asipto.com
Hi Daniel
I have just tested it and I'm getting the same results. This
is the kamailio version I'm testing:
root@kam-test:/usr/local/kamailio/sbin# ./kamailio -V
version: kamailio 3.2.0-dev2 (x86_64/linux) 35568f
Thanks!
Javi
On Tue, Jan 4, 2011 at 3:46 PM, Javier Gallart
<jgallartm(a)gmail.com <mailto:jgallartm@gmail.com>> wrote:
Hi list
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:
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
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
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
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
Is there a way to reconnect to the db before sending
that command?
Thanks in advance
Regards
Javi
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users(a)lists.sip-router.org <mailto:sr-users@lists.sip-router.org>
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
--
Daniel-Constantin Mierla
Kamailio (OpenSER) Advanced Training
Jan 24-26, 2011, Irvine, CA, USA
http://www.asipto.com
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users(a)lists.sip-router.org <mailto:sr-users@lists.sip-router.org>
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users