[Kroupware] More than one Kolab server

[Filip Van Raemdonck]

On Tue, May 20, 2003 at 01:57:02PM +0200, Dieter Kluenter wrote:
> "konold at erfrakon.de" <konold at erfrakon.de> writes:
> > On Tue, 20 May 2003, Dieter Kluenter wrote:
> >>
> >> I recommend bdb backend instead of ldbm.
> >
> > Please explain why you prefer bdb to ldbm.
> 
> There ar several reasons:
> 1. the ability of transaction control
> 2. the ability of database recovery after a system crash
> 3. the ability to set checkpoints
> 4. enhanced database configuration outside of slapd.conf

5. The ability to completely hang your ldap server, requiring a
   db_recover before being able to restart.

> the pros and cons of ldbm vs. bdb have been extensively discussed on
> the openldap-software mailinglist.

And elsewhere. BDB has several advantages, but it's also buggy as hell.
I've actually seen a SuSE openldap update (for SLEnterprise) which
reverted the ldap server from bdb to ldbm, _without asking_. They sure
won't do that unless there had been serious issues with using bdb. (Also,
I've seen the #5 hang I mentioned on both SLE & Debian unstable with
openldap 2.1 using bdb, so its not distribution specific)


Regards,

Filip

-- 
"For readers who have not been involved in balanced tree implementations,
 algorithms of this class are notorious for being much more work to implement
 than one would expect from their description."
	-- www.devlinux.com/projects/reiserfs/2_1.html