|SLAPO-SYNCPROV(5)||File Formats Manual||SLAPO-SYNCPROV(5)|
slapo-syncprov - Sync Provider overlay to slapd
The Sync Provider overlay implements the provider-side support for the LDAP Content Synchronization (RFC4533) as well as syncrepl replication support. The overlay can be used with any backend that maintains entryCSN and entryUUID attributes for its entries. It also creates a contextCSN attribute in the root entry of the database.
The contextCSN is updated for every write operation performed against the database. To reduce database contention, the contextCSN is only updated in memory. The value is written to the database on server shutdown and read into memory on startup, and maintained in memory thereafter. Checkpoints may be configured to write the contextCSN into the underlying database to minimize recovery time after an unclean shutdown.
On databases that support inequality indexing, it is helpful to set an eq index on the entryCSN attribute when using this overlay.
These slapd.conf options apply to the Sync Provider overlay. They should appear after the overlay directive.
slapd.conf(5), slapd-config(5), slapo-accesslog(5). OpenLDAP Administrator's Guide.
OpenLDAP Software is developed and maintained by The OpenLDAP Project <http://www.openldap.org/>. OpenLDAP Software is derived from University of Michigan LDAP 3.3 Release.