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+.TH SLAPO-SYNCPROV 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 2004-2021 The OpenLDAP Foundation All Rights Reserved.
+.\" Copying restrictions apply.  See COPYRIGHT/LICENSE.
+.\" $OpenLDAP$
+.SH NAME
+slapo\-syncprov \- Sync Provider overlay to slapd
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.SH DESCRIPTION
+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 mandatory to set an
+eq index on the entryCSN attribute when using this overlay.
+.SH CONFIGURATION
+These
+.B slapd.conf
+options apply to the Sync Provider overlay.
+They should appear after the
+.B overlay
+directive.
+.TP
+.B syncprov\-checkpoint <ops> <minutes>
+After a write operation has succeeded, write the contextCSN to the underlying
+database if
+.B <ops>
+write operations or more than
+.B <minutes>
+time have passed
+since the last checkpoint. Checkpointing is disabled by default.
+.TP
+.B syncprov\-sessionlog <ops>
+Configures an in-memory session log for recording information about write
+operations made on the database.  The
+.B <ops>
+specifies the number of operations that are recorded in the log. All write
+operations (except Adds) are recorded in the log.
+When using the session log, it is helpful to set an eq index on the
+entryUUID attribute in the underlying database.
+.TP
+.B syncprov\-nopresent TRUE | FALSE
+Specify that the Present phase of refreshing should be skipped. This value
+should only be set TRUE for a syncprov instance on top of a log database
+(such as one managed by the accesslog overlay).
+The default is FALSE.
+.TP
+.B syncprov\-reloadhint TRUE | FALSE
+Specify that the overlay should honor the reloadHint flag in the Sync
+Control. It must be set TRUE when using the accesslog overlay for
+delta-based syncrepl replication support.
+The default is FALSE.
+.SH FILES
+.TP
+ETCDIR/slapd.conf
+default slapd configuration file
+.SH SEE ALSO
+.BR slapd.conf (5),
+.BR slapd\-config (5),
+.BR slapo\-accesslog (5).
+OpenLDAP Administrator's Guide.
+.SH ACKNOWLEDGEMENTS
+.so ../Project