Re: Write to Disk?

[Quanah Gibson-Mount <quanah@stanford.edu>]

--On Friday, October 06, 2006 9:36 PM +0200 Dieter Kluenter 
<dieter@dkluenter.de> wrote:

> "Golden Butler" <golden@cnt.org> writes:
>
> > :o="urn:schemas-microsoft-com:office:office"
> > xmlns:w="urn:schemas-microsoft-com:office:word"
> > xmlns="http://www.w3.org/TR/REC-html40";>
> >
> > Yesterday, we lost power due to an power outage and our openldap server
> > went down. When power was restored and the server was back up,:p>
> >
> > I noticed that a lot of entries that I have entered over a period of time
> > (about two months) were gone! Is there a way to ensure that openldap
> > write changes to the database to disk instantly? Any help or
> > suggestions would be greatly appreciated, thanks.:p>
> >
> > :p>Â
> >
> > - Golden:p>
>
>  In general slapd writes to disk as soon as possible, depending on
>  pending read operations, that is, a delay of a few seconds my
>  occur. Not writing to disk for a few month seems to  be quite odd.If
>  you use a bdb or hdb database you might try to  recover the database
>  by means of db_recover.
> In order to force slapd to write to disk you may define a checkpoint in
> slapd.conf(5)

IIRC, it only flushes to disk when told to, which is either via the 
checkpoint settings, or a *normal* slapd shutdown.  Otherwise, it does not. 
So his scenario makes perfect sense to me.  Assuming the cache setting 
holds the entire DB, I believe.

--Quanah



--
Quanah Gibson-Mount
Principal Software Developer
ITS/Shared Application Services
Stanford University
GnuPG Public Key: http://www.stanford.edu/~quanah/pgp.html