db_mysql "Commands out of sync; you can't run this command now "

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Re: [SR-Users] Kamailio + rtpproxy...

MÉSZÁROS Mihály

27 Aug 2011 27 Aug '11

8:14 p.m.

Hi,

I am using the git version of kamailio, and i am experiencing problem This message is repeated in log with all kind of mysql query (insert/delete/select)

Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: db_mysql [km_dbase.c:124]: driver error on query: Commands out of sync; you can't run this command now Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: <core> [db_query.c:103]: error while submitting query Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [udomain.c:570]: db_query failed Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: db_mysql [km_dbase.c:124]: driver error on query: Commands out of sync; you can't run this command now Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: <core> [db_query.c:186]: error while submitting query Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [ucontact.c:513]: inserting contact in db failed Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [urecord.c:474]: failed to insert in database Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: registrar [save.c:430]: failed to insert contact Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: db_mysql [km_dbase.c:124]: driver error on query: Commands out of sync; you can't run this command now Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: <core> [db_query.c:242]: error while submitting query Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [urecord.c:426]: failed to delete from database Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [udomain.c:896]: DB delete failed

I am using stable debian so db_mysql.so linked with libmysqlclient.so.16

I read mysql doc and it is saying about this error the following: "Commands out of sync; you can't run this command now"

http://dev.mysql.com/doc/refman/5.0/en/commands-out-of-sync.html

So this problem cause it that not freed the last result.

Only one assumption: Could it related to this change: http://git.sip-router.org/cgi-bin/gitweb.cgi?p=sip-router;a=commitdiff;h=dfc...

Any help appreciated.

Regards, Misi

Show replies by date

Daniel-Constantin Mierla

28 Aug 28 Aug

7:25 a.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

Hello,

thanks for investigation - this is only on current devel version. For quick try, can you revert the patch and try? Practically, you have to replace:

while( mysql_more_results(CON_CONNECTION(_h)) && mysql_next_result(CON_CONNECTION(_h)) > 0 ) {

with:

while( mysql_next_result( CON_CONNECTION(_h) ) > 0 ) {

two times in modules/db_mysql/km_dbase.c.

At this moment I do not have a good internet connection to be able to investigate more and search into documentation of mysql for mysql_more_results(). It looks like the result was not freed indeed. Another case for such error is when a mysql connection is shared between many processes and the access to it is not synchronized -- there were no changes afaik that could introduce such situation.

Thanks, Daniel

On 8/27/11 10:14 PM, MÉSZÁROS Mihály wrote:

...

Hi,

I am using the git version of kamailio, and i am experiencing problem This message is repeated in log with all kind of mysql query (insert/delete/select)

Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: db_mysql [km_dbase.c:124]: driver error on query: Commands out of sync; you can't run this command now Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: <core> [db_query.c:103]: error while submitting query Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [udomain.c:570]: db_query failed Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: db_mysql [km_dbase.c:124]: driver error on query: Commands out of sync; you can't run this command now Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: <core> [db_query.c:186]: error while submitting query Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [ucontact.c:513]: inserting contact in db failed Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [urecord.c:474]: failed to insert in database Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: registrar [save.c:430]: failed to insert contact Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: db_mysql [km_dbase.c:124]: driver error on query: Commands out of sync; you can't run this command now Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: <core> [db_query.c:242]: error while submitting query Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [urecord.c:426]: failed to delete from database Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [udomain.c:896]: DB delete failed

I am using stable debian so db_mysql.so linked with libmysqlclient.so.16

I read mysql doc and it is saying about this error the following: "Commands out of sync; you can't run this command now"

http://dev.mysql.com/doc/refman/5.0/en/commands-out-of-sync.html

So this problem cause it that not freed the last result.

Only one assumption: Could it related to this change: http://git.sip-router.org/cgi-bin/gitweb.cgi?p=sip-router;a=commitdiff;h=dfc...

Any help appreciated.

Regards, Misi

SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

-- Daniel-Constantin Mierla -- http://www.asipto.com Kamailio Advanced Training, Oct 10-13, Berlin: http://asipto.com/u/kat http://linkedin.com/in/miconda -- http://twitter.com/miconda

MÉSZÁROS Mihály

8:56 a.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

Hello,

After reverting back to original this commit, the problem is still occurring. :( So not this commit is causing the problem. :(

Misi

2011-08-28 09:25 keltezéssel, Daniel-Constantin Mierla írta:

...

Hello,

thanks for investigation - this is only on current devel version. For quick try, can you revert the patch and try? Practically, you have to replace:

while( mysql_more_results(CON_CONNECTION(_h)) && mysql_next_result(CON_CONNECTION(_h)) > 0 ) {

with:

while( mysql_next_result( CON_CONNECTION(_h) ) > 0 ) {

two times in modules/db_mysql/km_dbase.c.

At this moment I do not have a good internet connection to be able to investigate more and search into documentation of mysql for mysql_more_results(). It looks like the result was not freed indeed. Another case for such error is when a mysql connection is shared between many processes and the access to it is not synchronized -- there were no changes afaik that could introduce such situation.

Thanks, Daniel

On 8/27/11 10:14 PM, MÉSZÁROS Mihály wrote:

...
Hi,

I am using the git version of kamailio, and i am experiencing problem This message is repeated in log with all kind of mysql query (insert/delete/select)

Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: db_mysql [km_dbase.c:124]: driver error on query: Commands out of sync; you can't run this command now Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: <core> [db_query.c:103]: error while submitting query Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [udomain.c:570]: db_query failed Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: db_mysql [km_dbase.c:124]: driver error on query: Commands out of sync; you can't run this command now Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: <core> [db_query.c:186]: error while submitting query Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [ucontact.c:513]: inserting contact in db failed Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [urecord.c:474]: failed to insert in database Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: registrar [save.c:430]: failed to insert contact Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: db_mysql [km_dbase.c:124]: driver error on query: Commands out of sync; you can't run this command now Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: <core> [db_query.c:242]: error while submitting query Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [urecord.c:426]: failed to delete from database Aug 27 22:04:05 hal /usr/sbin/kamailio[25681]: ERROR: usrloc [udomain.c:896]: DB delete failed

I am using stable debian so db_mysql.so linked with libmysqlclient.so.16

I read mysql doc and it is saying about this error the following: "Commands out of sync; you can't run this command now"

http://dev.mysql.com/doc/refman/5.0/en/commands-out-of-sync.html

So this problem cause it that not freed the last result.

Only one assumption: Could it related to this change: http://git.sip-router.org/cgi-bin/gitweb.cgi?p=sip-router;a=commitdiff;h=dfc...

Any help appreciated.

Regards, Misi

SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

Alex Hermann

8:53 a.m.

On Saturday 27 August 2011, MÉSZÁROS Mihály wrote:

...

I am using the git version of kamailio, and i am experiencing problem This message is repeated in log with all kind of mysql query (insert/delete/select) http://dev.mysql.com/doc/refman/5.0/en/commands-out-of-sync.html

Can you try to reproduce with attached patch and mail the line with the mysql error as well as the last couple of loglines with submit_query and store_result having the same con: as the failing query. You can anonymize the queries as long as it is still deducable which module submitted the query.

Also send list of modules using the database please.

...

Only one assumption: Could it related to this change: http://git.sip-router.org/cgi-bin/gitweb.cgi?p=sip-router;a=commitdiff;h= dfc2834223b7c6b2e799da5a0876b8096cfdae5e

That one can be safely reverted if you don't use the PV $sqlrows. But please do above test without reverting this.

-- Alex Hermann

MÉSZÁROS Mihály

10:50 a.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

I attached the log file. If you need detailed log/higher log level, then please let me know.

...

Can you try to reproduce with attached patch and mail the line with the mysql error as well as the last couple of loglines with submit_query and store_result having the same con: as the failing query. You can anonymize the queries as long as it is still deducable which module submitted the query.

Also send list of modules using the database please.

Modules what i am using

loadmodule "db_mysql.so" loadmodule "mi_fifo.so" loadmodule "kex.so" loadmodule "tm.so" loadmodule "tmx.so" loadmodule "sl.so" loadmodule "rr.so" loadmodule "pv.so" loadmodule "maxfwd.so" loadmodule "usrloc.so" loadmodule "registrar.so" loadmodule "textops.so" loadmodule "siputils.so" loadmodule "xlog.so" loadmodule "sanity.so" loadmodule "ctl.so" loadmodule "mi_rpc.so" loadmodule "acc.so" loadmodule "auth.so" loadmodule "auth_db.so" loadmodule "alias_db.so" loadmodule "presence.so" loadmodule "presence_xml.so" loadmodule "tls.so" loadmodule "htable.so" loadmodule "pike.so" loadmodule "siptrace.so" loadmodule "lcr.so" loadmodule "enum.so" loadmodule "cfg_rpc.so"

modparam("usrloc", "db_mode", 3)

...

...
Only one assumption: Could it related to this change: http://git.sip-router.org/cgi-bin/gitweb.cgi?p=sip-router;a=commitdiff;h= dfc2834223b7c6b2e799da5a0876b8096cfdae5e

That one can be safely reverted if you don't use the PV $sqlrows. But please do above test without reverting this.

OK I applied your patch to the git version of km_dbase.c

Thanks, Misi

Alex Hermann

11:45 a.m.

On Sunday 28 August 2011, MÉSZÁROS Mihály wrote:

...

I attached the log file. If you need detailed log/higher log level, then please let me know.

usrloc seems to be using the same connection from multiple processes:

pid: 18389 and 18391, connection: 0xb7387d5c

Aug 28 12:40:10 hal /usr/sbin/kamailio[18389]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 0xb7387d5c table: location query: select contact,expires,q,callid,cseq,flags,cflags,user_agent,received,path,socket,methods,last_modified from location where username='mutf-hd' order by q Aug 28 12:40:10 hal /usr/sbin/kamailio[18391]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 0xb7387d5c table: location query: select contact,expires,q,callid,cseq,flags,cflags,user_agent,received,path,socket,methods,last_modified from location where username='ppke-vjk' order by q Aug 28 12:40:10 hal /usr/sbin/kamailio[18389]: INFO: db_mysql [km_dbase.c:177]: store_result: con: 0xb7387d5c table: location Aug 28 12:40:10 hal /usr/sbin/kamailio[18389]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 0xb7387d5c table: location query: update location set expires='2011-08-28 12:45:10',q=-1.00 ,cseq=2,flags=0,cflags=0,user_agent='Polycom HDX 8000 HD (Release - 3.0.2.1-17007)',received=NULL,path=NULL,socket='tcp:195.111.192.7:5060',methods=24575,last_modified='2011-08-28 12:40:10' where username='mutf-hd' AND contact='sip:mutf-hd@193.225.216.28:5060;transport=tcp' AND callid='3533311123-1752' Aug 28 12:40:10 hal /usr/sbin/kamailio[18391]: INFO: db_mysql [km_dbase.c:177]: store_result: con: 0xb7387d5c table: location Aug 28 12:40:10 hal /usr/sbin/kamailio[18391]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 0xb7387d5c table: location query: insert into location Aug 28 12:40:10 hal /usr/sbin/kamailio[18389]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 0xb7387d5c table: location query: select contact,expires,q,callid,cseq,flags,cflags,user_agent,received,path,socket,methods,last_modified from location where username='de-tek-hpc' order by q Aug 28 12:40:10 hal /usr/sbin/kamailio[18389]: ERROR: db_mysql [km_dbase.c:131]: driver error on query: Commands out of sync; you can't run this command now

It probably needs a fix like below because mod_init has also created a db connection which is inherited by at least one child and ul_dbh is not 0 anymore. That process needs to be excluded from opening a database connection, all other childs need to open their own DB connection. I just don't know what rank mod_init is run as and thus don't know which process to exclude. Maybe some other dev can jump in.

diff --git a/modules_k/usrloc/ul_mod.c b/modules_k/usrloc/ul_mod.c index b3a9499..ca50b01 100644 --- a/modules_k/usrloc/ul_mod.c +++ b/modules_k/usrloc/ul_mod.c @@ -378,7 +378,7 @@ static int child_init(int _rank) break; }

- if (!ul_dbh) + if (rank != PROC_MAIN) ul_dbh = ul_dbf.init(&db_url); /* Get a new database connection */ if (!ul_dbh) { LM_ERR("child(%d): failed to connect to database\n", _rank);

MÉSZÁROS Mihály

29 Aug 29 Aug

9:51 a.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

Hi,

Your patch didn't work for me. The kamailio didn't start if i use "if ( _rank != PROC_MAIN)" So i commented out, both if statement, and now "out of sync problem disappeared"

--- a/modules_k/usrloc/ul_mod.c +++ b/modules_k/usrloc/ul_mod.c @@ -355,8 +355,11 @@ static int child_init(int _rank) break; }

- if (!ul_dbh) +LM_INFO("before misi ul_mod con: %p rank: %d",ul_dbh,_rank); +// if (!ul_dbh) +// if ( _rank != PROC_MAIN) ul_dbh = ul_dbf.init(&db_url); /* Get a new database connection */ +LM_INFO("after misi ul_mod con: %p rank: %d",ul_dbh,_rank); if (!ul_dbh) { LM_ERR("child(%d): failed to connect to database\n", _rank); return -1;

BUT

I am experiencing that in usrloc module, still more then one worker process share the same sql connection:

Aug 29 11:16:04 hal /usr/sbin/kamailio[21521]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: (nil) rank: 1 Aug 29 11:16:04 hal /usr/sbin/kamailio[21523]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: (nil) rank: 3 Aug 29 11:16:04 hal /usr/sbin/kamailio[21525]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: (nil) rank: 5 Aug 29 11:16:04 hal /usr/sbin/kamailio[21521]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb7286d5c rank: 1 Aug 29 11:16:04 hal /usr/sbin/kamailio[21524]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: (nil) rank: 4 Aug 29 11:16:04 hal /usr/sbin/kamailio[21527]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: (nil) rank: 7 Aug 29 11:16:04 hal /usr/sbin/kamailio[21522]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: (nil) rank: 2 Aug 29 11:16:04 hal /usr/sbin/kamailio[21526]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: (nil) rank: 6 Aug 29 11:16:04 hal /usr/sbin/kamailio[21530]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: (nil) rank: -1 Aug 29 11:16:04 hal /usr/sbin/kamailio[21508]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: (nil) rank: 0 Aug 29 11:16:04 hal /usr/sbin/kamailio[21528]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: (nil) rank: 8 Aug 29 11:16:04 hal /usr/sbin/kamailio[21523]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb7286d5c rank: 3 Aug 29 11:16:04 hal /usr/sbin/kamailio[21524]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb7286d5c rank: 4 Aug 29 11:16:04 hal /usr/sbin/kamailio[21525]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb7286d5c rank: 5 Aug 29 11:16:04 hal /usr/sbin/kamailio[21528]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb7286d5c rank: 8 Aug 29 11:16:04 hal /usr/sbin/kamailio[21522]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb7286d5c rank: 2 Aug 29 11:16:04 hal /usr/sbin/kamailio[21526]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb7286d5c rank: 6 Aug 29 11:16:04 hal /usr/sbin/kamailio[21529]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: (nil) rank: -1 Aug 29 11:16:04 hal /usr/sbin/kamailio[21527]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb7286d5c rank: 7 Aug 29 11:16:04 hal /usr/sbin/kamailio[21508]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb7286d5c rank: 0 Aug 29 11:16:04 hal /usr/sbin/kamailio[21530]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb7286d5c rank: -1 Aug 29 11:16:04 hal /usr/sbin/kamailio[21529]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb7286d5c rank: -1 Aug 29 11:16:04 hal /usr/sbin/kamailio[21536]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: 0xb7286d5c rank: 12 Aug 29 11:16:04 hal /usr/sbin/kamailio[21534]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: 0xb7286d5c rank: 10 Aug 29 11:16:04 hal /usr/sbin/kamailio[21533]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: 0xb7286d5c rank: 9 Aug 29 11:16:04 hal /usr/sbin/kamailio[21533]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb72ab174 rank: 9 Aug 29 11:16:04 hal /usr/sbin/kamailio[21535]: INFO: usrloc [ul_mod.c:358]: before misi ul_mod con: 0xb7286d5c rank: 11 Aug 29 11:16:04 hal /usr/sbin/kamailio[21534]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb72ab174 rank: 10 Aug 29 11:16:04 hal /usr/sbin/kamailio[21536]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb72ab174 rank: 12 Aug 29 11:16:04 hal /usr/sbin/kamailio[21535]: INFO: usrloc [ul_mod.c:363]: after misi ul_mod con: 0xb72ab174 rank: 11

Misi

2011-08-28 13:45 keltezéssel, Alex Hermann írta:

...

On Sunday 28 August 2011, MÉSZÁROS Mihály wrote:

...
I attached the log file. If you need detailed log/higher log level, then please let me know.

usrloc seems to be using the same connection from multiple processes:

pid: 18389 and 18391, connection: 0xb7387d5c

Aug 28 12:40:10 hal /usr/sbin/kamailio[18389]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 0xb7387d5c table: location query: select contact,expires,q,callid,cseq,flags,cflags,user_agent,received,path,socket,methods,last_modified from location where username='mutf-hd' order by q Aug 28 12:40:10 hal /usr/sbin/kamailio[18391]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 0xb7387d5c table: location query: select contact,expires,q,callid,cseq,flags,cflags,user_agent,received,path,socket,methods,last_modified from location where username='ppke-vjk' order by q Aug 28 12:40:10 hal /usr/sbin/kamailio[18389]: INFO: db_mysql [km_dbase.c:177]: store_result: con: 0xb7387d5c table: location Aug 28 12:40:10 hal /usr/sbin/kamailio[18389]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 0xb7387d5c table: location query: update location set expires='2011-08-28 12:45:10',q=-1.00 ,cseq=2,flags=0,cflags=0,user_agent='Polycom HDX 8000 HD (Release - 3.0.2.1-17007)',received=NULL,path=NULL,socket='tcp:195.111.192.7:5060',methods=24575,last_modified='2011-08-28 12:40:10' where username='mutf-hd' AND contact='sip:mutf-hd@193.225.216.28:5060;transport=tcp' AND callid='3533311123-1752' Aug 28 12:40:10 hal /usr/sbin/kamailio[18391]: INFO: db_mysql [km_dbase.c:177]: store_result: con: 0xb7387d5c table: location Aug 28 12:40:10 hal /usr/sbin/kamailio[18391]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 0xb7387d5c table: location query: insert into location Aug 28 12:40:10 hal /usr/sbin/kamailio[18389]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 0xb7387d5c table: location query: select contact,expires,q,callid,cseq,flags,cflags,user_agent,received,path,socket,methods,last_modified from location where username='de-tek-hpc' order by q Aug 28 12:40:10 hal /usr/sbin/kamailio[18389]: ERROR: db_mysql [km_dbase.c:131]: driver error on query: Commands out of sync; you can't run this command now

It probably needs a fix like below because mod_init has also created a db connection which is inherited by at least one child and ul_dbh is not 0 anymore. That process needs to be excluded from opening a database connection, all other childs need to open their own DB connection. I just don't know what rank mod_init is run as and thus don't know which process to exclude. Maybe some other dev can jump in.

diff --git a/modules_k/usrloc/ul_mod.c b/modules_k/usrloc/ul_mod.c index b3a9499..ca50b01 100644 --- a/modules_k/usrloc/ul_mod.c +++ b/modules_k/usrloc/ul_mod.c @@ -378,7 +378,7 @@ static int child_init(int _rank) break; }
  if (!ul_dbh)
  if (rank != PROC_MAIN)
           ul_dbh = ul_dbf.init(&db_url); /* Get a new database connection */
   if (!ul_dbh) {
           LM_ERR("child(%d): failed to connect to database\n", _rank);

Alex Hermann

11:09 a.m.

On Monday 29 August 2011, MÉSZÁROS Mihály wrote:

...

Your patch didn't work for me. The kamailio didn't start if i use "if ( _rank != PROC_MAIN)" So i commented out, both if statement, and now "out of sync problem disappeared"

That should do the trick, but it might be possible to create a zombie connection this way. I don't know how the initialization of modules works exactly, so I can't really help you with this.

...

BUT

I am experiencing that in usrloc module, still more then one worker process share the same sql connection:

That is weird. AFAIK, connections can't be shared between processes, there seems to be no locking/semaphores/whatever to protect against simultaneous access.

Maybe you got lucky in your tests and just didn't have enough traffic to hit the simultaneous access problem (yet).

I'm out of ideas here, sorry.

-- Greetings, Alex Hermann

MÉSZÁROS Mihály

11:44 a.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

Hi,

Thank You Alex for your help!

Others? Daniel? Can You please help me?

Thanks, Misi

2011-08-29 13:09 keltezéssel, Alex Hermann írta:

...

On Monday 29 August 2011, MÉSZÁROS Mihály wrote:

...
Your patch didn't work for me. The kamailio didn't start if i use "if ( _rank != PROC_MAIN)" So i commented out, both if statement, and now "out of sync problem disappeared"

That should do the trick, but it might be possible to create a zombie connection this way. I don't know how the initialization of modules works exactly, so I can't really help you with this.

...
BUT

I am experiencing that in usrloc module, still more then one worker process share the same sql connection:

That is weird. AFAIK, connections can't be shared between processes, there seems to be no locking/semaphores/whatever to protect against simultaneous access.

Maybe you got lucky in your tests and just didn't have enough traffic to hit the simultaneous access problem (yet).

I'm out of ideas here, sorry.

Alex Hermann

noon

On Monday 29 August 2011, MÉSZÁROS Mihály wrote:

...

I am experiencing that in usrloc module, still more then one worker process share the same sql connection:

I'm sorry, the first patch was totally bogus. Due to the forking of the childs, they have the same memory layout and a very high chance of allocating the same address (in their own address space) for the connection struct.

Attached patch should give a thread_id truly unique per connection. If you're able to find multiple processes using the same thread_id, you've found the cause.

-- Greetings, Alex Hermann

MÉSZÁROS Mihály

3:12 p.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

Hi,

I find the following:

grep "con: 17212"

Aug 29 17:05:27 hal /usr/sbin/kamailio[24001]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 17212 table: location query: insert into location (username,contact,expires,q,callid,cseq,flags,cflags,user_agent,received,path,socket,methods,last_modified ) values ('de-tek-hpc','sip:de-tek-hpc@193.6.138.201:5060;transport=tcp','2011-08-29 17:10:27',-1.00 ,'966616894-1736',2,0,0,'Polycom HDX 8000 HD (Release - 3.0.2.1-17007)',NULL,NULL,'tcp:195.111.192.7:5060',24575,'2011-08-29 17:05:27') Aug 29 17:05:27 hal /usr/sbin/kamailio[24001]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 17212 table: location query: delete from location where username='de-tek-hpc' Aug 29 17:05:30 hal /usr/sbin/kamailio[24002]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 17212 table: location query: select contact,expires,q,callid,cseq,flags,cflags,user_agent,received,path,socket,methods,last_modified from location where username='me-iit' order by q Aug 29 17:05:30 hal /usr/sbin/kamailio[24002]: INFO: db_mysql [km_dbase.c:175]: store_result: con: 17212 table: location Aug 29 17:05:30 hal /usr/sbin/kamailio[24002]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 17212 table: location query: update location set expires='2011-08-29 17:10:30',q=-1.00 ,cseq=3,flags=0,cflags=0,user_agent='Polycom HDX 8000 HD (Release - 3.0.2.1-17007)',received=NULL,path=NULL,socket='tcp:195.111.192.7:5060',methods=NULL,last_modified='2011-08-29 17:05:30' where username='me-iit' AND contact='sip:me-iit@193.6.5.220:5060;transport=tcp' AND callid='385875516-1729' Aug 29 17:05:37 hal /usr/sbin/kamailio[24003]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 17212 table: location query: select contact,expires,q,callid,cseq,flags,cflags,user_agent,received,path,socket,methods,last_modified from location where username='de-tek-hpc' order by q Aug 29 17:05:37 hal /usr/sbin/kamailio[24003]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 17212 table: location query: insert into location (username,contact,expires,q,callid,cseq,flags,cflags,user_agent,received,path,socket,methods,last_modified ) values ('de-tek-hpc','sip:de-tek-hpc@193.6.138.201:5060;transport=tcp','2011-08-29 17:10:37',-1.00 ,'976693266-1736',2,0,0,'Polycom HDX 8000 HD (Release - 3.0.2.1-17007)',NULL,NULL,'tcp:195.111.192.7:5060',24575,'2011-08-29 17:05:37') Aug 29 17:05:37 hal /usr/sbin/kamailio[24003]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 17212 table: location query: delete from location where username='de-tek-hpc' Aug 29 17:05:47 hal /usr/sbin/kamailio[24004]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 17212 table: location query: select contact,expires,q,callid,cseq,flags,cflags,user_agent,received,path,socket,methods,last_modified from location where username='de-tek-hpc' order by q Aug 29 17:05:47 hal /usr/sbin/kamailio[24004]: INFO: db_mysql [km_dbase.c:175]: store_result: con: 17212 table: location Aug 29 17:05:47 hal /usr/sbin/kamailio[24004]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 17212 table: location query: update location set expires='2011-08-29 17:10:47',q=-1.00 ,cseq=2,flags=0,cflags=0,user_agent='Polycom HDX 8000 HD (Release - 3.0.2.1-17007)',received=NULL,path=NULL,socket='tcp:195.111.192.7:5060',methods=24575,last_modified='2011-08-29 17:05:47' where username='de-tek-hpc' AND contact='sip:de-tek-hpc@193.6.138.201:5060;transport=tcp' AND callid='385871516-1736'

a full log piece:

Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 17212 table: location query: select c ontact,expires,q,callid,cseq,flags,cflags,user_agent,received,path,socket,methods,last_modified from location where username='ppke-vjk' ord er by q Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: ERROR: db_mysql [km_dbase.c:129]: driver error on query: Commands out of sync; you can't run this command now Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: ERROR: <core> [db_query.c:103]: error while submitting query Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: ERROR: usrloc [udomain.c:570]: db_query failed Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 17212 table: location query: insert i nto location (username,contact,expires,q,callid,cseq,flags,cflags,user_agent,received,path,socket,methods,last_modified ) values ('ppke-vjk ','sip:ppke-vjk@193.225.195.133:5061;transport=tls','2011-08-29 17:15:16',-1.00 ,'1254092986-1737',2,0,0,'Polycom HDX 8000 HD (Release - 3.0.2.1-17007)',NULL,NULL,'tls:195.111.192.7:5061',24575,'2011-08-29 17:10:16') Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: ERROR: db_mysql [km_dbase.c:129]: driver error on query: Commands out of sync; you can't run this command now Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: ERROR: <core> [db_query.c:186]: error while submitting query Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: ERROR: usrloc [ucontact.c:513]: inserting contact in db failed Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: ERROR: usrloc [urecord.c:474]: failed to insert in database Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: ERROR: registrar [save.c:430]: failed to insert contact Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: INFO: db_mysql [km_dbase.c:83]: submit_query: con: 17212 table: location query: delete f rom location where username='ppke-vjk' Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: ERROR: db_mysql [km_dbase.c:129]: driver error on query: Commands out of sync; you can't run this command now Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: ERROR: <core> [db_query.c:242]: error while submitting query Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: ERROR: usrloc [urecord.c:426]: failed to delete from database Aug 29 17:10:16 hal /usr/sbin/kamailio[24003]: ERROR: usrloc [udomain.c:896]: DB delete failed

Thanks, Misi

(I don't know may be matter, and i didn't mentioned yet, that i am running multiple kamaillio instance on different ip address but on the same machine.)

2011-08-29 14:00 keltezéssel, Alex Hermann írta:

...

On Monday 29 August 2011, MÉSZÁROS Mihály wrote:

...
I am experiencing that in usrloc module, still more then one worker process share the same sql connection:

I'm sorry, the first patch was totally bogus. Due to the forking of the childs, they have the same memory layout and a very high chance of allocating the same address (in their own address space) for the connection struct.

Attached patch should give a thread_id truly unique per connection. If you're able to find multiple processes using the same thread_id, you've found the cause.

MÉSZÁROS Mihály

8:44 p.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

Hi,

With this debug i can see that all tcp connections are using the same db connection(18549). Any suggestion highly appreciated! Please read collected information on the bottom of my email.

Misi

--- a/modules_k/usrloc/Makefile +++ b/modules_k/usrloc/Makefile @@ -8,12 +8,16 @@ include ../../Makefile.defs auto_gen= NAME=usrloc.so -LIBS= +LIBS=-L/usr/lib/mysql -L/usr/lib -L/usr/lib/mysql -lmysqlclient -lz +#LIBS=

DEFS+=-DOPENSER_MOD_INTERFACE

+ SERLIBPATH=../../lib SER_LIBS+=$(SERLIBPATH)/kmi/kmi SER_LIBS+=$(SERLIBPATH)/srdb1/srdb1 SER_LIBS+=$(SERLIBPATH)/kcore/kcore + + include ../../Makefile.modules diff --git a/modules_k/usrloc/ul_mod.c b/modules_k/usrloc/ul_mod.c index c3fe26a..9ff1a4c 100644 --- a/modules_k/usrloc/ul_mod.c +++ b/modules_k/usrloc/ul_mod.c @@ -50,6 +50,10 @@ * over a API. A main user of this API is the registrar module. * \see registrar */ +#include <sys/types.h> +#include <unistd.h> +#include <mysql/mysql.h> +#include "../../modules/db_mysql/km_my_con.h"

#include <stdio.h> #include "ul_mod.h" @@ -355,8 +359,15 @@ static int child_init(int _rank) break; }

+ LM_INFO("misi before mysql: rank: %d pid: %d\n", + _rank,getpid()); + if (!ul_dbh) ul_dbh = ul_dbf.init(&db_url); /* Get a new database connection */ + + LM_INFO("misi after mysql: con: %ld rank: %d pid: %d\n", + mysql_thread_id(((struct my_con*)(ul_dbh->tail))->con),_rank,getpid()); + if (!ul_dbh) { LM_ERR("child(%d): failed to connect to database\n", _rank); return -1;

Aug 29 22:34:12 hal /usr/sbin/kamailio[8275]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 1 pid: 8275 Aug 29 22:34:12 hal /usr/sbin/kamailio[8275]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18543 rank: 1 pid: 8275 Aug 29 22:34:12 hal /usr/sbin/kamailio[8256]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 0 pid: 8256 Aug 29 22:34:12 hal /usr/sbin/kamailio[8294]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 5 pid: 8294 Aug 29 22:34:12 hal /usr/sbin/kamailio[8291]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 4 pid: 8291 Aug 29 22:34:12 hal /usr/sbin/kamailio[8288]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 3 pid: 8288 Aug 29 22:34:12 hal /usr/sbin/kamailio[8285]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 2 pid: 8285 Aug 29 22:34:12 hal /usr/sbin/kamailio[8298]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 8 pid: 8298 Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8300 Aug 29 22:34:12 hal /usr/sbin/kamailio[8294]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18544 rank: 5 pid: 8294 Aug 29 22:34:12 hal /usr/sbin/kamailio[8296]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 6 pid: 8296 Aug 29 22:34:12 hal /usr/sbin/kamailio[8288]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18545 rank: 3 pid: 8288 Aug 29 22:34:12 hal /usr/sbin/kamailio[8297]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 7 pid: 8297 Aug 29 22:34:12 hal /usr/sbin/kamailio[8256]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 0 pid: 8256 Aug 29 22:34:12 hal /usr/sbin/kamailio[8298]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18548 rank: 8 pid: 8298 Aug 29 22:34:12 hal /usr/sbin/kamailio[8291]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18547 rank: 4 pid: 8291 Aug 29 22:34:12 hal /usr/sbin/kamailio[8285]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18546 rank: 2 pid: 8285 Aug 29 22:34:12 hal /usr/sbin/kamailio[8296]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18550 rank: 6 pid: 8296 Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18552 rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18553 rank: -1 pid: 8300 Aug 29 22:34:12 hal /usr/sbin/kamailio[8297]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18554 rank: 7 pid: 8297 Aug 29 22:34:12 hal /usr/sbin/kamailio[8303]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 9 pid: 8303 Aug 29 22:34:12 hal /usr/sbin/kamailio[8304]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 10 pid: 8304 Aug 29 22:34:12 hal /usr/sbin/kamailio[8305]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 11 pid: 8305 Aug 29 22:34:12 hal /usr/sbin/kamailio[8303]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 9 pid: 8303 Aug 29 22:34:12 hal /usr/sbin/kamailio[8304]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 10 pid: 8304 Aug 29 22:34:12 hal /usr/sbin/kamailio[8305]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 11 pid: 8305 Aug 29 22:34:12 hal /usr/sbin/kamailio[8306]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 12 pid: 8306 Aug 29 22:34:12 hal /usr/sbin/kamailio[8306]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 12 pid: 8306 hal:/home/misi# kamctl-vvc ps database engine 'MYSQL' loaded Control engine 'FIFO' loaded entering fifo_cmd ps Process:: ID=0 PID=8256 Type=attendant Process:: ID=1 PID=8275 Type=udp receiver child=0 sock=195.111.192.7:5060 Process:: ID=2 PID=8285 Type=udp receiver child=1 sock=195.111.192.7:5060 Process:: ID=3 PID=8288 Type=udp receiver child=2 sock=195.111.192.7:5060 Process:: ID=4 PID=8291 Type=udp receiver child=3 sock=195.111.192.7:5060 Process:: ID=5 PID=8294 Type=udp receiver child=0 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=6 PID=8296 Type=udp receiver child=1 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=7 PID=8297 Type=udp receiver child=2 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=8 PID=8298 Type=udp receiver child=3 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=9 PID=8299 Type=slow timer Process:: ID=10 PID=8300 Type=timer Process:: ID=11 PID=8301 Type=MI FIFO Process:: ID=12 PID=8302 Type=ctl handler Process:: ID=13 PID=8303 Type=tcp receiver child=0 Process:: ID=14 PID=8304 Type=tcp receiver child=1 Process:: ID=15 PID=8305 Type=tcp receiver child=2 Process:: ID=16 PID=8306 Type=tcp receiver child=3 Process:: ID=17 PID=8307 Type=tcp main process FIFO command was: :ps:openser_receiver_9501

2011-08-29 14:00 keltezéssel, Alex Hermann írta:

...

On Monday 29 August 2011, MÉSZÁROS Mihály wrote:

...
I am experiencing that in usrloc module, still more then one worker process share the same sql connection:

I'm sorry, the first patch was totally bogus. Due to the forking of the childs, they have the same memory layout and a very high chance of allocating the same address (in their own address space) for the connection struct.

Attached patch should give a thread_id truly unique per connection. If you're able to find multiple processes using the same thread_id, you've found the cause.

MÉSZÁROS Mihály

30 Aug 30 Aug

7:58 a.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

So the problem is that rank: 0 PROC_MAIN process initialitzed and have db connection with mod_child_init, and after rank 0 PROC_MAIN process is forking for tcp workers it contains the initialized ul_dbh and no unique connection created for the tcp workers.

Any suggestion, solution?

Thanks, Misi

2011-08-29 22:44 keltezéssel, MÉSZÁROS Mihály írta:

...

Hi,

With this debug i can see that all tcp connections are using the same db connection(18549). Any suggestion highly appreciated! Please read collected information on the bottom of my email.

Misi

--- a/modules_k/usrloc/Makefile +++ b/modules_k/usrloc/Makefile @@ -8,12 +8,16 @@ include ../../Makefile.defs auto_gen= NAME=usrloc.so -LIBS= +LIBS=-L/usr/lib/mysql -L/usr/lib -L/usr/lib/mysql -lmysqlclient -lz +#LIBS=

DEFS+=-DOPENSER_MOD_INTERFACE

SERLIBPATH=../../lib SER_LIBS+=$(SERLIBPATH)/kmi/kmi SER_LIBS+=$(SERLIBPATH)/srdb1/srdb1 SER_LIBS+=$(SERLIBPATH)/kcore/kcore

include ../../Makefile.modules diff --git a/modules_k/usrloc/ul_mod.c b/modules_k/usrloc/ul_mod.c index c3fe26a..9ff1a4c 100644 --- a/modules_k/usrloc/ul_mod.c +++ b/modules_k/usrloc/ul_mod.c @@ -50,6 +50,10 @@

over a API. A main user of this API is the registrar module.

\see registrar

*/ +#include <sys/types.h> +#include <unistd.h> +#include <mysql/mysql.h> +#include "../../modules/db_mysql/km_my_con.h"

#include <stdio.h> #include "ul_mod.h" @@ -355,8 +359,15 @@ static int child_init(int _rank) break; }
  LM_INFO("misi before mysql:   rank: %d  pid: %d\n",
                          _rank,getpid());
  if (!ul_dbh)
          ul_dbh = ul_dbf.init(&db_url); /* Get a new database 
connection */
  LM_INFO("misi after mysql:  con: %ld  rank: %d  pid: %d\n",
                          mysql_thread_id(((struct 
my_con*)(ul_dbh->tail))->con),_rank,getpid());
  if (!ul_dbh) {
          LM_ERR("child(%d): failed to connect to database\n", 
_rank); return -1;

Aug 29 22:34:12 hal /usr/sbin/kamailio[8275]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 1 pid: 8275 Aug 29 22:34:12 hal /usr/sbin/kamailio[8275]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18543 rank: 1 pid: 8275 Aug 29 22:34:12 hal /usr/sbin/kamailio[8256]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 0 pid: 8256 Aug 29 22:34:12 hal /usr/sbin/kamailio[8294]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 5 pid: 8294 Aug 29 22:34:12 hal /usr/sbin/kamailio[8291]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 4 pid: 8291 Aug 29 22:34:12 hal /usr/sbin/kamailio[8288]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 3 pid: 8288 Aug 29 22:34:12 hal /usr/sbin/kamailio[8285]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 2 pid: 8285 Aug 29 22:34:12 hal /usr/sbin/kamailio[8298]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 8 pid: 8298 Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8300 Aug 29 22:34:12 hal /usr/sbin/kamailio[8294]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18544 rank: 5 pid: 8294 Aug 29 22:34:12 hal /usr/sbin/kamailio[8296]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 6 pid: 8296 Aug 29 22:34:12 hal /usr/sbin/kamailio[8288]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18545 rank: 3 pid: 8288 Aug 29 22:34:12 hal /usr/sbin/kamailio[8297]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 7 pid: 8297 Aug 29 22:34:12 hal /usr/sbin/kamailio[8256]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 0 pid: 8256 Aug 29 22:34:12 hal /usr/sbin/kamailio[8298]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18548 rank: 8 pid: 8298 Aug 29 22:34:12 hal /usr/sbin/kamailio[8291]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18547 rank: 4 pid: 8291 Aug 29 22:34:12 hal /usr/sbin/kamailio[8285]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18546 rank: 2 pid: 8285 Aug 29 22:34:12 hal /usr/sbin/kamailio[8296]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18550 rank: 6 pid: 8296 Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18552 rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18553 rank: -1 pid: 8300 Aug 29 22:34:12 hal /usr/sbin/kamailio[8297]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18554 rank: 7 pid: 8297 Aug 29 22:34:12 hal /usr/sbin/kamailio[8303]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 9 pid: 8303 Aug 29 22:34:12 hal /usr/sbin/kamailio[8304]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 10 pid: 8304 Aug 29 22:34:12 hal /usr/sbin/kamailio[8305]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 11 pid: 8305 Aug 29 22:34:12 hal /usr/sbin/kamailio[8303]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 9 pid: 8303 Aug 29 22:34:12 hal /usr/sbin/kamailio[8304]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 10 pid: 8304 Aug 29 22:34:12 hal /usr/sbin/kamailio[8305]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 11 pid: 8305 Aug 29 22:34:12 hal /usr/sbin/kamailio[8306]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 12 pid: 8306 Aug 29 22:34:12 hal /usr/sbin/kamailio[8306]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 12 pid: 8306 hal:/home/misi# kamctl-vvc ps database engine 'MYSQL' loaded Control engine 'FIFO' loaded entering fifo_cmd ps Process:: ID=0 PID=8256 Type=attendant Process:: ID=1 PID=8275 Type=udp receiver child=0 sock=195.111.192.7:5060 Process:: ID=2 PID=8285 Type=udp receiver child=1 sock=195.111.192.7:5060 Process:: ID=3 PID=8288 Type=udp receiver child=2 sock=195.111.192.7:5060 Process:: ID=4 PID=8291 Type=udp receiver child=3 sock=195.111.192.7:5060 Process:: ID=5 PID=8294 Type=udp receiver child=0 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=6 PID=8296 Type=udp receiver child=1 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=7 PID=8297 Type=udp receiver child=2 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=8 PID=8298 Type=udp receiver child=3 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=9 PID=8299 Type=slow timer Process:: ID=10 PID=8300 Type=timer Process:: ID=11 PID=8301 Type=MI FIFO Process:: ID=12 PID=8302 Type=ctl handler Process:: ID=13 PID=8303 Type=tcp receiver child=0 Process:: ID=14 PID=8304 Type=tcp receiver child=1 Process:: ID=15 PID=8305 Type=tcp receiver child=2 Process:: ID=16 PID=8306 Type=tcp receiver child=3 Process:: ID=17 PID=8307 Type=tcp main process FIFO command was: :ps:openser_receiver_9501

2011-08-29 14:00 keltezéssel, Alex Hermann írta:

...
On Monday 29 August 2011, MÉSZÁROS Mihály wrote:

...
I am experiencing that in usrloc module, still more then one worker process share the same sql connection:

I'm sorry, the first patch was totally bogus. Due to the forking of the childs, they have the same memory layout and a very high chance of allocating the same address (in their own address space) for the connection struct.

Attached patch should give a thread_id truly unique per connection. If you're able to find multiple processes using the same thread_id, you've found the cause.

Daniel-Constantin Mierla

31 Aug 31 Aug

7:43 a.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

Hello,

thanks for investigating further. I just committed a patch, pull the latest GIT and try again. Let me know if works ok.

Thanks, Daniel

On 8/30/11 9:58 AM, MÉSZÁROS Mihály wrote:

...

So the problem is that rank: 0 PROC_MAIN process initialitzed and have db connection with mod_child_init, and after rank 0 PROC_MAIN process is forking for tcp workers it contains the initialized ul_dbh and no unique connection created for the tcp workers.

Any suggestion, solution?

Thanks, Misi

2011-08-29 22:44 keltezéssel, MÉSZÁROS Mihály írta:

...
Hi,

With this debug i can see that all tcp connections are using the same db connection(18549). Any suggestion highly appreciated! Please read collected information on the bottom of my email.

Misi

--- a/modules_k/usrloc/Makefile +++ b/modules_k/usrloc/Makefile @@ -8,12 +8,16 @@ include ../../Makefile.defs auto_gen= NAME=usrloc.so -LIBS= +LIBS=-L/usr/lib/mysql -L/usr/lib -L/usr/lib/mysql -lmysqlclient -lz +#LIBS=

DEFS+=-DOPENSER_MOD_INTERFACE

SERLIBPATH=../../lib SER_LIBS+=$(SERLIBPATH)/kmi/kmi SER_LIBS+=$(SERLIBPATH)/srdb1/srdb1 SER_LIBS+=$(SERLIBPATH)/kcore/kcore

include ../../Makefile.modules diff --git a/modules_k/usrloc/ul_mod.c b/modules_k/usrloc/ul_mod.c index c3fe26a..9ff1a4c 100644 --- a/modules_k/usrloc/ul_mod.c +++ b/modules_k/usrloc/ul_mod.c @@ -50,6 +50,10 @@

over a API. A main user of this API is the registrar module.

\see registrar

*/ +#include <sys/types.h> +#include <unistd.h> +#include <mysql/mysql.h> +#include "../../modules/db_mysql/km_my_con.h"

#include <stdio.h> #include "ul_mod.h" @@ -355,8 +359,15 @@ static int child_init(int _rank) break; }
  LM_INFO("misi before mysql:   rank: %d  pid: %d\n",
                          _rank,getpid());
  if (!ul_dbh)
          ul_dbh = ul_dbf.init(&db_url); /* Get a new database 
connection */
  LM_INFO("misi after mysql:  con: %ld  rank: %d  pid: %d\n",
                          mysql_thread_id(((struct 
my_con*)(ul_dbh->tail))->con),_rank,getpid());
  if (!ul_dbh) {
          LM_ERR("child(%d): failed to connect to database\n", 
_rank); return -1;

Aug 29 22:34:12 hal /usr/sbin/kamailio[8275]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 1 pid: 8275 Aug 29 22:34:12 hal /usr/sbin/kamailio[8275]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18543 rank: 1 pid: 8275 Aug 29 22:34:12 hal /usr/sbin/kamailio[8256]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 0 pid: 8256 Aug 29 22:34:12 hal /usr/sbin/kamailio[8294]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 5 pid: 8294 Aug 29 22:34:12 hal /usr/sbin/kamailio[8291]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 4 pid: 8291 Aug 29 22:34:12 hal /usr/sbin/kamailio[8288]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 3 pid: 8288 Aug 29 22:34:12 hal /usr/sbin/kamailio[8285]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 2 pid: 8285 Aug 29 22:34:12 hal /usr/sbin/kamailio[8298]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 8 pid: 8298 Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8300 Aug 29 22:34:12 hal /usr/sbin/kamailio[8294]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18544 rank: 5 pid: 8294 Aug 29 22:34:12 hal /usr/sbin/kamailio[8296]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 6 pid: 8296 Aug 29 22:34:12 hal /usr/sbin/kamailio[8288]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18545 rank: 3 pid: 8288 Aug 29 22:34:12 hal /usr/sbin/kamailio[8297]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 7 pid: 8297 Aug 29 22:34:12 hal /usr/sbin/kamailio[8256]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 0 pid: 8256 Aug 29 22:34:12 hal /usr/sbin/kamailio[8298]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18548 rank: 8 pid: 8298 Aug 29 22:34:12 hal /usr/sbin/kamailio[8291]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18547 rank: 4 pid: 8291 Aug 29 22:34:12 hal /usr/sbin/kamailio[8285]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18546 rank: 2 pid: 8285 Aug 29 22:34:12 hal /usr/sbin/kamailio[8296]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18550 rank: 6 pid: 8296 Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18552 rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18553 rank: -1 pid: 8300 Aug 29 22:34:12 hal /usr/sbin/kamailio[8297]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18554 rank: 7 pid: 8297 Aug 29 22:34:12 hal /usr/sbin/kamailio[8303]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 9 pid: 8303 Aug 29 22:34:12 hal /usr/sbin/kamailio[8304]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 10 pid: 8304 Aug 29 22:34:12 hal /usr/sbin/kamailio[8305]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 11 pid: 8305 Aug 29 22:34:12 hal /usr/sbin/kamailio[8303]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 9 pid: 8303 Aug 29 22:34:12 hal /usr/sbin/kamailio[8304]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 10 pid: 8304 Aug 29 22:34:12 hal /usr/sbin/kamailio[8305]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 11 pid: 8305 Aug 29 22:34:12 hal /usr/sbin/kamailio[8306]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 12 pid: 8306 Aug 29 22:34:12 hal /usr/sbin/kamailio[8306]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 12 pid: 8306 hal:/home/misi# kamctl-vvc ps database engine 'MYSQL' loaded Control engine 'FIFO' loaded entering fifo_cmd ps Process:: ID=0 PID=8256 Type=attendant Process:: ID=1 PID=8275 Type=udp receiver child=0 sock=195.111.192.7:5060 Process:: ID=2 PID=8285 Type=udp receiver child=1 sock=195.111.192.7:5060 Process:: ID=3 PID=8288 Type=udp receiver child=2 sock=195.111.192.7:5060 Process:: ID=4 PID=8291 Type=udp receiver child=3 sock=195.111.192.7:5060 Process:: ID=5 PID=8294 Type=udp receiver child=0 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=6 PID=8296 Type=udp receiver child=1 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=7 PID=8297 Type=udp receiver child=2 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=8 PID=8298 Type=udp receiver child=3 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=9 PID=8299 Type=slow timer Process:: ID=10 PID=8300 Type=timer Process:: ID=11 PID=8301 Type=MI FIFO Process:: ID=12 PID=8302 Type=ctl handler Process:: ID=13 PID=8303 Type=tcp receiver child=0 Process:: ID=14 PID=8304 Type=tcp receiver child=1 Process:: ID=15 PID=8305 Type=tcp receiver child=2 Process:: ID=16 PID=8306 Type=tcp receiver child=3 Process:: ID=17 PID=8307 Type=tcp main process FIFO command was: :ps:openser_receiver_9501

2011-08-29 14:00 keltezéssel, Alex Hermann írta:

...
On Monday 29 August 2011, MÉSZÁROS Mihály wrote:

...
I am experiencing that in usrloc module, still more then one worker process share the same sql connection:

I'm sorry, the first patch was totally bogus. Due to the forking of the childs, they have the same memory layout and a very high chance of allocating the same address (in their own address space) for the connection struct.

Attached patch should give a thread_id truly unique per connection. If you're able to find multiple processes using the same thread_id, you've found the cause.
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

-- Daniel-Constantin Mierla -- http://www.asipto.com Kamailio Advanced Training, Oct 10-13, Berlin: http://asipto.com/u/kat http://linkedin.com/in/miconda -- http://twitter.com/miconda

MÉSZÁROS Mihály

8:49 a.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

Hi Daniel,

Thank You for your reply!

- if (!ul_dbh) - ul_dbh = ul_dbf.init(&db_url); /* Get a new database connection */ + ul_dbh = ul_dbf.init(&db_url); /* Get a database connection per child */

Are you sure that it will not cause any problem that rank -1 process in usrloc database will be initialized twice, and ul_dbh will be overloaded with new connection? I guess this will cause problem.

You can see before: Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8300 Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18552 rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18553 rank: -1 pid: 8300

Thanks, Misi

2011-08-31 09:43 keltezéssel, Daniel-Constantin Mierla írta:

...

Hello,

thanks for investigating further. I just committed a patch, pull the latest GIT and try again. Let me know if works ok.

Thanks, Daniel

On 8/30/11 9:58 AM, MÉSZÁROS Mihály wrote:

...
So the problem is that rank: 0 PROC_MAIN process initialitzed and have db connection with mod_child_init, and after rank 0 PROC_MAIN process is forking for tcp workers it contains the initialized ul_dbh and no unique connection created for the tcp workers.

Any suggestion, solution?

Thanks, Misi

2011-08-29 22:44 keltezéssel, MÉSZÁROS Mihály írta:

...
Hi,

With this debug i can see that all tcp connections are using the same db connection(18549). Any suggestion highly appreciated! Please read collected information on the bottom of my email.

Misi

--- a/modules_k/usrloc/Makefile +++ b/modules_k/usrloc/Makefile @@ -8,12 +8,16 @@ include ../../Makefile.defs auto_gen= NAME=usrloc.so -LIBS= +LIBS=-L/usr/lib/mysql -L/usr/lib -L/usr/lib/mysql -lmysqlclient -lz +#LIBS=

DEFS+=-DOPENSER_MOD_INTERFACE

SERLIBPATH=../../lib SER_LIBS+=$(SERLIBPATH)/kmi/kmi SER_LIBS+=$(SERLIBPATH)/srdb1/srdb1 SER_LIBS+=$(SERLIBPATH)/kcore/kcore

include ../../Makefile.modules diff --git a/modules_k/usrloc/ul_mod.c b/modules_k/usrloc/ul_mod.c index c3fe26a..9ff1a4c 100644 --- a/modules_k/usrloc/ul_mod.c +++ b/modules_k/usrloc/ul_mod.c @@ -50,6 +50,10 @@

over a API. A main user of this API is the registrar module.

\see registrar

*/ +#include <sys/types.h> +#include <unistd.h> +#include <mysql/mysql.h> +#include "../../modules/db_mysql/km_my_con.h"

#include <stdio.h> #include "ul_mod.h" @@ -355,8 +359,15 @@ static int child_init(int _rank) break; }
  LM_INFO("misi before mysql:   rank: %d  pid: %d\n",
                          _rank,getpid());
  if (!ul_dbh)
          ul_dbh = ul_dbf.init(&db_url); /* Get a new database 
connection */
  LM_INFO("misi after mysql:  con: %ld  rank: %d  pid: %d\n",
                          mysql_thread_id(((struct 
my_con*)(ul_dbh->tail))->con),_rank,getpid());
  if (!ul_dbh) {
          LM_ERR("child(%d): failed to connect to database\n", 
_rank); return -1;

Aug 29 22:34:12 hal /usr/sbin/kamailio[8275]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 1 pid: 8275 Aug 29 22:34:12 hal /usr/sbin/kamailio[8275]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18543 rank: 1 pid: 8275 Aug 29 22:34:12 hal /usr/sbin/kamailio[8256]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 0 pid: 8256 Aug 29 22:34:12 hal /usr/sbin/kamailio[8294]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 5 pid: 8294 Aug 29 22:34:12 hal /usr/sbin/kamailio[8291]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 4 pid: 8291 Aug 29 22:34:12 hal /usr/sbin/kamailio[8288]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 3 pid: 8288 Aug 29 22:34:12 hal /usr/sbin/kamailio[8285]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 2 pid: 8285 Aug 29 22:34:12 hal /usr/sbin/kamailio[8298]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 8 pid: 8298 Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8300 Aug 29 22:34:12 hal /usr/sbin/kamailio[8294]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18544 rank: 5 pid: 8294 Aug 29 22:34:12 hal /usr/sbin/kamailio[8296]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 6 pid: 8296 Aug 29 22:34:12 hal /usr/sbin/kamailio[8288]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18545 rank: 3 pid: 8288 Aug 29 22:34:12 hal /usr/sbin/kamailio[8297]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 7 pid: 8297 Aug 29 22:34:12 hal /usr/sbin/kamailio[8256]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 0 pid: 8256 Aug 29 22:34:12 hal /usr/sbin/kamailio[8298]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18548 rank: 8 pid: 8298 Aug 29 22:34:12 hal /usr/sbin/kamailio[8291]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18547 rank: 4 pid: 8291 Aug 29 22:34:12 hal /usr/sbin/kamailio[8285]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18546 rank: 2 pid: 8285 Aug 29 22:34:12 hal /usr/sbin/kamailio[8296]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18550 rank: 6 pid: 8296 Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18552 rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18553 rank: -1 pid: 8300 Aug 29 22:34:12 hal /usr/sbin/kamailio[8297]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18554 rank: 7 pid: 8297 Aug 29 22:34:12 hal /usr/sbin/kamailio[8303]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 9 pid: 8303 Aug 29 22:34:12 hal /usr/sbin/kamailio[8304]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 10 pid: 8304 Aug 29 22:34:12 hal /usr/sbin/kamailio[8305]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 11 pid: 8305 Aug 29 22:34:12 hal /usr/sbin/kamailio[8303]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 9 pid: 8303 Aug 29 22:34:12 hal /usr/sbin/kamailio[8304]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 10 pid: 8304 Aug 29 22:34:12 hal /usr/sbin/kamailio[8305]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 11 pid: 8305 Aug 29 22:34:12 hal /usr/sbin/kamailio[8306]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 12 pid: 8306 Aug 29 22:34:12 hal /usr/sbin/kamailio[8306]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 12 pid: 8306 hal:/home/misi# kamctl-vvc ps database engine 'MYSQL' loaded Control engine 'FIFO' loaded entering fifo_cmd ps Process:: ID=0 PID=8256 Type=attendant Process:: ID=1 PID=8275 Type=udp receiver child=0 sock=195.111.192.7:5060 Process:: ID=2 PID=8285 Type=udp receiver child=1 sock=195.111.192.7:5060 Process:: ID=3 PID=8288 Type=udp receiver child=2 sock=195.111.192.7:5060 Process:: ID=4 PID=8291 Type=udp receiver child=3 sock=195.111.192.7:5060 Process:: ID=5 PID=8294 Type=udp receiver child=0 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=6 PID=8296 Type=udp receiver child=1 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=7 PID=8297 Type=udp receiver child=2 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=8 PID=8298 Type=udp receiver child=3 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=9 PID=8299 Type=slow timer Process:: ID=10 PID=8300 Type=timer Process:: ID=11 PID=8301 Type=MI FIFO Process:: ID=12 PID=8302 Type=ctl handler Process:: ID=13 PID=8303 Type=tcp receiver child=0 Process:: ID=14 PID=8304 Type=tcp receiver child=1 Process:: ID=15 PID=8305 Type=tcp receiver child=2 Process:: ID=16 PID=8306 Type=tcp receiver child=3 Process:: ID=17 PID=8307 Type=tcp main process FIFO command was: :ps:openser_receiver_9501

2011-08-29 14:00 keltezéssel, Alex Hermann írta:

...
On Monday 29 August 2011, MÉSZÁROS Mihály wrote:

...
I am experiencing that in usrloc module, still more then one worker process share the same sql connection:

I'm sorry, the first patch was totally bogus. Due to the forking of the childs, they have the same memory layout and a very high chance of allocating the same address (in their own address space) for the connection struct.

Attached patch should give a thread_id truly unique per connection. If you're able to find multiple processes using the same thread_id, you've found the cause.
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

Daniel-Constantin Mierla

10:18 a.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

Hello,

On 8/31/11 10:49 AM, MÉSZÁROS Mihály wrote:

...

Hi Daniel,

Thank You for your reply!
  if (!ul_dbh)
          ul_dbh = ul_dbf.init(&db_url); /* Get a new database 
connection */
  ul_dbh = ul_dbf.init(&db_url); /* Get a database connection 
per child */

Are you sure that it will not cause any problem that rank -1 process in usrloc database will be initialized twice, and ul_dbh will be overloaded with new connection? I guess this will cause problem.

it is safe, we have connection pool system inside, allowing many modules to use the same db connection when the db url value is matched. So, if a connection with same db url exists, it will be reused.

Cheers, Daniel

...

You can see before: Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8300 Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18552 rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18553 rank: -1 pid: 8300

Thanks, Misi

2011-08-31 09:43 keltezéssel, Daniel-Constantin Mierla írta:

...
Hello,

thanks for investigating further. I just committed a patch, pull the latest GIT and try again. Let me know if works ok.

Thanks, Daniel

On 8/30/11 9:58 AM, MÉSZÁROS Mihály wrote:

...
So the problem is that rank: 0 PROC_MAIN process initialitzed and have db connection with mod_child_init, and after rank 0 PROC_MAIN process is forking for tcp workers it contains the initialized ul_dbh and no unique connection created for the tcp workers.

Any suggestion, solution?

Thanks, Misi

2011-08-29 22:44 keltezéssel, MÉSZÁROS Mihály írta:

...
Hi,

With this debug i can see that all tcp connections are using the same db connection(18549). Any suggestion highly appreciated! Please read collected information on the bottom of my email.

Misi

--- a/modules_k/usrloc/Makefile +++ b/modules_k/usrloc/Makefile @@ -8,12 +8,16 @@ include ../../Makefile.defs auto_gen= NAME=usrloc.so -LIBS= +LIBS=-L/usr/lib/mysql -L/usr/lib -L/usr/lib/mysql -lmysqlclient -lz +#LIBS=

DEFS+=-DOPENSER_MOD_INTERFACE

SERLIBPATH=../../lib SER_LIBS+=$(SERLIBPATH)/kmi/kmi SER_LIBS+=$(SERLIBPATH)/srdb1/srdb1 SER_LIBS+=$(SERLIBPATH)/kcore/kcore

include ../../Makefile.modules diff --git a/modules_k/usrloc/ul_mod.c b/modules_k/usrloc/ul_mod.c index c3fe26a..9ff1a4c 100644 --- a/modules_k/usrloc/ul_mod.c +++ b/modules_k/usrloc/ul_mod.c @@ -50,6 +50,10 @@

over a API. A main user of this API is the registrar module.

\see registrar

*/ +#include <sys/types.h> +#include <unistd.h> +#include <mysql/mysql.h> +#include "../../modules/db_mysql/km_my_con.h"

#include <stdio.h> #include "ul_mod.h" @@ -355,8 +359,15 @@ static int child_init(int _rank) break; }
  LM_INFO("misi before mysql:   rank: %d  pid: %d\n",
                          _rank,getpid());
  if (!ul_dbh)
          ul_dbh = ul_dbf.init(&db_url); /* Get a new 
database connection */
  LM_INFO("misi after mysql:  con: %ld  rank: %d  pid: %d\n",
                          mysql_thread_id(((struct 
my_con*)(ul_dbh->tail))->con),_rank,getpid());
  if (!ul_dbh) {
          LM_ERR("child(%d): failed to connect to 
database\n", _rank); return -1;

Aug 29 22:34:12 hal /usr/sbin/kamailio[8275]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 1 pid: 8275 Aug 29 22:34:12 hal /usr/sbin/kamailio[8275]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18543 rank: 1 pid: 8275 Aug 29 22:34:12 hal /usr/sbin/kamailio[8256]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 0 pid: 8256 Aug 29 22:34:12 hal /usr/sbin/kamailio[8294]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 5 pid: 8294 Aug 29 22:34:12 hal /usr/sbin/kamailio[8291]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 4 pid: 8291 Aug 29 22:34:12 hal /usr/sbin/kamailio[8288]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 3 pid: 8288 Aug 29 22:34:12 hal /usr/sbin/kamailio[8285]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 2 pid: 8285 Aug 29 22:34:12 hal /usr/sbin/kamailio[8298]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 8 pid: 8298 Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: -1 pid: 8300 Aug 29 22:34:12 hal /usr/sbin/kamailio[8294]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18544 rank: 5 pid: 8294 Aug 29 22:34:12 hal /usr/sbin/kamailio[8296]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 6 pid: 8296 Aug 29 22:34:12 hal /usr/sbin/kamailio[8288]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18545 rank: 3 pid: 8288 Aug 29 22:34:12 hal /usr/sbin/kamailio[8297]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 7 pid: 8297 Aug 29 22:34:12 hal /usr/sbin/kamailio[8256]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 0 pid: 8256 Aug 29 22:34:12 hal /usr/sbin/kamailio[8298]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18548 rank: 8 pid: 8298 Aug 29 22:34:12 hal /usr/sbin/kamailio[8291]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18547 rank: 4 pid: 8291 Aug 29 22:34:12 hal /usr/sbin/kamailio[8285]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18546 rank: 2 pid: 8285 Aug 29 22:34:12 hal /usr/sbin/kamailio[8296]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18550 rank: 6 pid: 8296 Aug 29 22:34:12 hal /usr/sbin/kamailio[8299]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18552 rank: -1 pid: 8299 Aug 29 22:34:12 hal /usr/sbin/kamailio[8300]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18553 rank: -1 pid: 8300 Aug 29 22:34:12 hal /usr/sbin/kamailio[8297]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18554 rank: 7 pid: 8297 Aug 29 22:34:12 hal /usr/sbin/kamailio[8303]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 9 pid: 8303 Aug 29 22:34:12 hal /usr/sbin/kamailio[8304]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 10 pid: 8304 Aug 29 22:34:12 hal /usr/sbin/kamailio[8305]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 11 pid: 8305 Aug 29 22:34:12 hal /usr/sbin/kamailio[8303]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 9 pid: 8303 Aug 29 22:34:12 hal /usr/sbin/kamailio[8304]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 10 pid: 8304 Aug 29 22:34:12 hal /usr/sbin/kamailio[8305]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 11 pid: 8305 Aug 29 22:34:12 hal /usr/sbin/kamailio[8306]: INFO: usrloc [ul_mod.c:363]: misi before mysql: rank: 12 pid: 8306 Aug 29 22:34:12 hal /usr/sbin/kamailio[8306]: INFO: usrloc [ul_mod.c:369]: misi after mysql: con: 18549 rank: 12 pid: 8306 hal:/home/misi# kamctl-vvc ps database engine 'MYSQL' loaded Control engine 'FIFO' loaded entering fifo_cmd ps Process:: ID=0 PID=8256 Type=attendant Process:: ID=1 PID=8275 Type=udp receiver child=0 sock=195.111.192.7:5060 Process:: ID=2 PID=8285 Type=udp receiver child=1 sock=195.111.192.7:5060 Process:: ID=3 PID=8288 Type=udp receiver child=2 sock=195.111.192.7:5060 Process:: ID=4 PID=8291 Type=udp receiver child=3 sock=195.111.192.7:5060 Process:: ID=5 PID=8294 Type=udp receiver child=0 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=6 PID=8296 Type=udp receiver child=1 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=7 PID=8297 Type=udp receiver child=2 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=8 PID=8298 Type=udp receiver child=3 sock=[2001:738:0:404:0:0:0:7]:5060 Process:: ID=9 PID=8299 Type=slow timer Process:: ID=10 PID=8300 Type=timer Process:: ID=11 PID=8301 Type=MI FIFO Process:: ID=12 PID=8302 Type=ctl handler Process:: ID=13 PID=8303 Type=tcp receiver child=0 Process:: ID=14 PID=8304 Type=tcp receiver child=1 Process:: ID=15 PID=8305 Type=tcp receiver child=2 Process:: ID=16 PID=8306 Type=tcp receiver child=3 Process:: ID=17 PID=8307 Type=tcp main process FIFO command was: :ps:openser_receiver_9501

2011-08-29 14:00 keltezéssel, Alex Hermann írta:

...
On Monday 29 August 2011, MÉSZÁROS Mihály wrote:

...
I am experiencing that in usrloc module, still more then one worker process share the same sql connection:

I'm sorry, the first patch was totally bogus. Due to the forking of the childs, they have the same memory layout and a very high chance of allocating the same address (in their own address space) for the connection struct.

Attached patch should give a thread_id truly unique per connection. If you're able to find multiple processes using the same thread_id, you've found the cause.
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

-- Daniel-Constantin Mierla -- http://www.asipto.com Kamailio Advanced Training, Oct 10-13, Berlin: http://asipto.com/u/kat http://linkedin.com/in/miconda -- http://twitter.com/miconda

MÉSZÁROS Mihály

10:56 a.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

2011-08-31 12:18 keltezéssel, Daniel-Constantin Mierla írta:

...

Hello,

On 8/31/11 10:49 AM, MÉSZÁROS Mihály wrote:

...
Hi Daniel,

Thank You for your reply!
  if (!ul_dbh)
          ul_dbh = ul_dbf.init(&db_url); /* Get a new database 
connection */
  ul_dbh = ul_dbf.init(&db_url); /* Get a database connection 
per child */

Are you sure that it will not cause any problem that rank -1 process in usrloc database will be initialized twice, and ul_dbh will be overloaded with new connection? I guess this will cause problem.
it is safe, we have connection pool system inside, allowing many modules to use the same db connection when the db url value is matched. So, if a connection with same db url exists, it will be reused.

Thank You for clarification! I will compile it and get back to you with results.

Cheers, Misi

MÉSZÁROS Mihály

5 Sep 5 Sep

2:55 p.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

Hello Daniel,

Thank You, and many thanks to Alex too! The fix you made is working fine for me.

Cheers, Misi

Daniel-Constantin Mierla

6 Sep 6 Sep

7:20 a.m.

New subject: db_mysql "Commands out of sync; you can't run this command now "

Hello,

On 9/5/11 4:55 PM, MÉSZÁROS Mihály wrote:

...

Hello Daniel,

Thank You, and many thanks to Alex too! The fix you made is working fine for me.

thanks for testing.

Cheers, Daniel

-- Daniel-Constantin Mierla -- http://www.asipto.com Kamailio Advanced Training, Oct 10-13, Berlin: http://asipto.com/u/kat http://linkedin.com/in/miconda -- http://twitter.com/miconda

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participants (3)

Alex Hermann
Daniel-Constantin Mierla
MÉSZÁROS Mihály