Re: Monitoring back-mdb's olcDbMaxSize

[Hallvard Breien Furuseth <h.b.furuseth@usit.uio.no>]

On 2013-12-19 16:46, Michael StrÃder wrote:
> So when monitoring OpenLDAP with back-mdb it would be interesting to 
> see how
> much space of configured olcDbMaxSize is already occupied.
>
> Does it make sense to compare the real file size shown by du -h
> /path/to/data.mdb to configured olcDbMaxSize?

That would depend on the filesystem supporting holes
in files, which sounds OS- and filesystem-dependent.

The fill ratio is
(MDB_envinfo.me_last_pgno + 1.0) * MDB_stat.ms_psize / 
MDB_envinfo.me_mapsize
from mdb_env_info() and mdb_env_stat().
Inconvenient formula though.  Oh well.

--
Hallvard