Re: bdb binary log files

[Matthew Backes <mbackes@symas.com>]

> I'm using openldap 2.4.11 on linux x86 system, with one database bdb  
> backend, with the following options in slapd.conf file:
>
> database        bdb
> [..]
> dbnosync
> cachesize       1000
> checkpoint      0 0
> [..]

You should set non-zero checkpoints, or there is no guarantee that you  
will have any data after unexpected shutdown.

> Is it possible to disable bdb log.00000[0..n] files completely?

Yes, but that is a bad idea.

> I can slapcat the database, then remove these, slapadd and reindex  
> database, and there's no logs, but is it possible to avoid creating  
> them?  Or set up some limit of numer/size of them?

In your DB_CONFIG add

set_flags DB_LOG_AUTOREMOVE

This will cause transaction logs to be removed after they are no  
longer necessary for db recovery.  (typically 2-6 10MByte logs will  
exist)

> Additionally - when I have a "DB_CONFIG" file in /etc/ldap, and
> a DB_CONFIG file in database storage dir, e.g. /var/lib/ldap, which
> one is actually used? My guess'd be /var/lib/ldap/DB_CONFIG, but
> I'd like to know for sure :-)

DB_CONFIG only configures BDB; it must be in the database environment  
directory.

You can use symbolic links to point to it from other locations, however.

Matthew Backes
Symas Corporation
mbackes@symas.com