RESET MASTER doesn't work

2010-08-12 Thread Joe Hammerman
Hello MySQL-users list,

We are having an issue with replication and binlog files and I was hoping that 
this list could shed a little light on the issue for us. We have a pair of 
5.1.41-community MySQL servers. We attempted to restore from the slave server, 
and in the process I zeroed out the mysql-bin.index file with the echo command 
(I know this makes me a terrible person; in my own defense, this was effective 
technique for restoration on on 5.0 MySQL machines).

Now, when we run:

mysql show master status;

We see

+--+---+--+--+
| Fil| Position  | Binlog_Do_DB | Binlog_Ignore_DB |
+--+---+--+--+
| mysql-bin.000121 | 429017611 |   ||
+--+---+--+--+

But if we run

mysql SHOW BINARY LOGS;

We see

Empty set (0.00 sec)

And the RESET MASTER command has no effect.

We saw on http://dev.mysql.com/doc/refman/5.0/en/purge-binary-logs.html

Prior to MySQL 5.0.60, PURGE BINARY LOGS TO and PURGE BINARY LOGS BEFORE did 
not behave in the same way (and neither one behaved correctly) when binary log 
files listed in the .index file had been removed from the system by some other 
means (such as using rm on Linux). Beginning with MySQL 5.0.60, both variants 
of the statement fail with an error in such cases. (Bug#18199 
http://bugs.mysql.com/bug.php?id=18199 , Bug#18453 
http://bugs.mysql.com/bug.php?id=18453 ) To handle such errors, edit the 
.index file (which is a simple text file) manually to ensure that it lists only 
the binary log files that are actually present, then run again the PURGE BINARY 
LOGS purge-binary-logs.html  statement that failed.

However running PURGE BINARY LOGS against a file listed in the mysql-bin.index 
file (once this file has been updated to reflefc all of the logs contained 
within it's directory) still results in

ERROR 1373: Target log not found in binlog index

Can anyone shed some light on this issue for us?

Thanks!


Recommended swap partition size

2010-04-13 Thread Joe Hammerman
Hello all,
My organization has a dedicated MySQL server. The system has 
32Gb of memory, and is running CentOS 5.3. The default engine will be InnoDB. 
Does anyone know how much space should be dedicated to swap?

Thanks!


Upgrade question

2009-07-01 Thread Joe Hammerman
Hello MySQL users,

My company is planning to upgrade from MySQL 5.0.51a to a more 
recent version. Which version of MySQL offers the best balance between 
stability and currency? Is there a discussion of the tradeoffs involved between 
different recent version that I could be directed to?

Thanks!
Joseph Hammerman