I have gone through an upgrade proces from OpenLDAP 2.4.21 to 2.4.40 and took the opportunity to switch from the bdb backend to mdb.

I am expiriencing an (in my eyes) unexpected growth of the mdb database file.

Two types of setup: Setup 1: One master, one slave Setup 2: Two masters MMR (read,write,syncrepl goes to one master, three slaves)

I see the growth in both setups on the master, who services read,write and syncrepl. In setup 2 the master, who is "idle" and only syncrepl's with the other master, does not grow more than expected.

Example from setup 2: Servicing master: -rw------- 1 openldap openldap 4294963200 Nov 26 10:18 data.mdb

Non-servicing master: -rw------- 1 openldap openldap 271347712 Nov 26 10:18 data.mdb

Quite a difference !

A slapcat on the servicing master shows that I have no where near 4 Gb of data, here from my nightly backup: -rw------- 1 openldap openldap 73389431 Nov 25 23:46 20141125234504_slapd-dump.ldif

I have the same backend configuration on all masters:

database mdb maxsize 8589934592 suffix "c=<country>" rootdn "cn=Manager,o=<some-org>,c=<country>" rootpw <some-pw> directory <some-path> index objectClass,entryCSN,entryUUID eq

No overlays involved.

Operating system is Solaris 10. OpenLDAP compiled with Oracles compiler, compiler flags are: export CC="cc" export CFLAGS="-m64 -fast -D_AVL_H"

Unsure how to proceed. Should I file an ITS (looks somewhat like 7974 though) ? I may also have missed something entirely... Happy to provide further info.

/Rene