Re: BDB memory cache problem

[Howard Chu <hyc@symas.com>]

Luca Scamoni wrote:

> Szuts Attila wrote:
>
> > On Fri, Dec 03, 2004 at 02:32:51PM +0100, Luca Scamoni 
> > <luca.scamoni@sys-net.it> wrote:
> >  
> >
> > > Do you run db_recover after system crash before starting OL?
> > >
> > >   
> >
> > Before starting OL?
> > My OL starts from /etc/init.d/slapd srcipt and never run db_recover.
> >
> > Is it correct if I make a shell script that always run
> > db_recover on all BDB databases before OL starts?
> >
> > There was discussion on devel list about it:
> > http://www.openldap.org/lists/openldap-devel/200309/msg00014.html
> > I've read it. It suggest: run db_recover before any slapd instance 
> > starts.
> >  
> I'd run it only if last slapd shutdown was not clean (i.e.: slapd.pid 
> exists while slapd process is dead). Without looking at the thread I 
> believe the suggestion to be bit "strong".
> Remember that running db_recover destroys the contents of the __db* 
> files (that contain the cache and other db environment) and so should 
> be done only if really needed.

Agreed. After the discussion on that email thread died out we (Symas) 
went ahead and developed a locking system of our own that detects 
unclean shutdowns and handles recovery automatically. It seemed there 
was no interest from Sleepycat or anyone else so we have kept this as a 
proprietary feature of Connexitor Directory Services.

--
 -- Howard Chu
 Chief Architect, Symas Corp.       Director, Highland Sun
 http://www.symas.com               http://highlandsun.com/hyc
 Symas: Premier OpenSource Development and Support