Hello I'm getting an error while trying to use MDB backend. The section that's giving issue is the following one: ####################################################################### # LMDB database definitions ####################################################################### # dn: olcDatabase=mdb,cn=config objectClass: olcDatabaseConfig objectClass: olcMdbConfig olcDatabase: mdb olcDbMaxSize: 1073741824 olcSuffix: dc=test,dc=local olcRootDN: cn=mdbadm,test,dc=local # Cleartext passwords, especially for the rootdn, should # be avoided. See slappasswd(8) and slapd-config(5) for details. # Use of strong authentication encouraged. olcRootPW: {SSHA}XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX # The database directory MUST exist prior to running slapd AND # should only be accessible by the slapd and slap tools. # Mode 700 recommended. olcDbDirectory: /var/db/openldap-data # Indices to maintain olcDbIndex: objectClass eq with this section added to the end of slapd.ldif i get the error *5ea9641d <= str2entry: str2ad(olcDbMaxSize): attribute type undefined* while testing the import using *slapadd -v -n0 -F /etc/openldap/slapd.d -l /etc/openldap/slapd.ldif* if i comment the offending line *olcDbMaxSize: 1073741824* then I just get an error with another line in the same section. This is a fresh install, the slapd.d folder is empty and I'm using the example slapd.ldif.sample that comes with the software (it has mdb lodaded as module by default) # # Load dynamic backend modules: # dn: cn=module,cn=config objectClass: olcModuleList cn: module olcModulepath: /usr/lib/openldap #olcModuleload: back_bdb.so #olcModuleload: back_hdb.so #olcModuleload: back_ldap.so olcModuleload: back_mdb.so #olcModuleload: back_passwd.so #olcModuleload: back_shell.so Thanks in dvance for any hint or help you can provide Best regards