Motion - Bug Report 2006x 10x 10x 081903

BUG: MySQL does not reconnect if connection is dropped

If MySQL has a connection to a server and the server becomes unavaiable, it doesnt reconnect when the server is up again. Motion is still running, but nothing is written to the database.

I have a cvs version of Motion, but dont remember which one. The problem was there with 3.2.6 also though.
Oct 10 01:00:01 [motion] [5] Mysql query failed: Broken pipe
Oct 10 01:00:01 [motion] [2] Mysql query failed: Success
Oct 10 01:00:01 [motion] [1] Mysql query failed: Broken pipe
Oct 10 01:00:01 [motion] [3] Mysql query failed: Broken pipe
Oct 10 01:00:01 [motion] [4] Mysql query failed: Success

Environment

Motion version: 3.2.7
ffmpeg version: 0.4.9_p20060530
Shared libraries: ffmpeg, mysql
Server OS: kernel 2.6.12-gentoo-r10

-- GunnarSkjold - 10 Oct 2006

Follow up

Yes , that's a known issue. Motion needs a recover functions for database connection.

Let me some days to talk with Kenneth about it.

-- AngelCarpintero - 18 Nov 2006

Fix record

I think we need Motion to try and re-run the connection to MySQL when the connection is lost.

I have the feeling that the connection is normally lost because of a software bug in the MySQL code or other temporary glitches and that in 99.99% of the cases Motion could just reconnect and save what it has to save.

But if the MySQL server is temporarily down then I think it will be a feature overkill to try and save the SQL calls for when the server is up again. Then I would simply discard them.

So something like

  • Assume MySQL connection is established.
  • Write SQL statement.
  • If this failed try to reconnect.
  • If this reconnect fails give up and discard the SQL statement.
  • If reconnect is successful write the SQL statement to the database.

-- KennethLavrsen - 20 Nov 2006

Done , if you want to check the fix get latest svn version ( i did the commit in r143 ).

Reopen the bug if the problem remains .

-- AngelCarpintero - 21 Nov 2006
Topic revision: r5 - 21 Feb 2008, KennethLavrsen
Copyright © 1999-2024 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Please do not email Kenneth for support questions (read why). Use the Support Requests page or join the Mailing List.
This website only use harmless session cookies. See Cookie Policy for details. By using this website you accept the use of these cookies.