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Re: Knowing free mdb space

Clément OUDOT wrote:



Le 07/01/2016 11:57, Angel L. Mateo a écrit :

Hello,

    I have recently migrated my openldap server from hdb to mdb. In this
kind of database you configure the maximal database size with maxsize option.

    Although I have configure this option with 8GB, more than the double of
my actual database size, I would like to know if there is any way to
calculate the remaining size.

    According to [1] you can get the actual size with a du. But my problem
is that I'm using zfs with a compressed file system, so du reports the
compressed size, not the real one.

    Is there any way to get this value? Or my real maximum size is 8GB after
compression?

[1] https://wiki.zimbra.com/wiki/OpenLDAP_Performance_Tuning_8.0


Hi,

I wrote a monitoring plugin that uses mdb_stat to do this :
* http://ltb-project.org/wiki/documentation/nagios-plugins/check_lmdb_usage
*
http://tools.ltb-project.org/projects/ltb/repository/entry/nagios-plugins/trunk/check_lmdb_usage.pl
We had plans to put the mdb_stats into cn=monitor. I guess that'll be a 2.5 feature. 

--
  -- Howard Chu
  CTO, Symas Corp.           http://www.symas.com
  Director, Highland Sun     http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/