I am experiencing strange behavior when running an mdb database, as compared to the same system configured with hdb. If I conduct any queries while the server is receiving its initial data the server via syncrepl it stops receiving new entries and the data.mdb file balloons to the olcDbMaxsize value.

I have tried adjusting configuration settings but regardless this continues to occur is this to be expected with mdb?

It should be noted that if I wait for the entire database to replicate I can query the database fine and the size of data.mdb does not change. Furthermore if new changes are propagated down to the replica the issue does not arise.

Any help would be appreciated. Please find below configuration ldifs and version information.

-Russell J. Jancewicz University of Connecticut

Version:

@(#) $OpenLDAP: slapd 2.4.35 (Jun 17 2013 12:21:32) $

My olcDatabaseConfig:

# {1}mdb, config dn: olcDatabase={1}mdb,cn=config changetype: add objectClass: olcDatabaseConfig objectClass: olcMdbConfig olcDatabase: mdb olcDbDirectory: /srv/ldap/example.com olcSuffix: dc=example,dc=com olcRootDN: dc=example,dc=com olcRootPW: secret olcDbMaxsize: 4294967296 olcDbNoSync: FALSE olcReadOnly: TRUE olcDbCheckpoint: 512 30 olcDbIndex: default pres,eq olcAccess: to * by dn.exact="gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth" manage by * break olcAccess: to * by * none olcSyncrepl: rid=101 provider=ldap://replica0.ldap.example.com starttls=critical bindmethod=simple binddn="dc=example,dc=com" credentials=secret searchbase="dc=example,dc=com" type=refreshAndPersist retry="5 5 300 +" olcSyncrepl: rid=102 provider=ldap://replica1.ldap.example.com starttls=critical bindmethod=simple binddn="dc=example,dc=com" credentials=secret searchbase="dc=example,dc=com" type=refreshAndPersist retry="5 5 300 +"

# {1}memberof, {1}hdb, config dn: olcOverlay={0}memberof,olcDatabase={1}mdb,cn=config objectClass: top objectClass: olcOverlayConfig objectClass: olcMemberOf olcOverlay: {0}memberof