docs:autorid document how well-known SIDs will be mapped

they consume space of the allocation pool and a list of most known well-known SIDs is
preallocated to create a deterministic mapping

diff --git a/docs-xml/manpages-3/idmap_autorid.8.xml b/docs-xml/manpages-3/idmap_autorid.8.xml
index e563cdd5b48a3c5794ef0144e5ea49f0d72f594b..d541af4e5322a7808251b3b98a3a0f766529ddbe 100644 (file)
--- a/docs-xml/manpages-3/idmap_autorid.8.xml
+++ b/docs-xml/manpages-3/idmap_autorid.8.xml
@@ -52,7 +52,11 @@
                        plan accordingly for your expected number of users in a domain
                        with safety margins.
                        </para>
-                       <para>One range will be used for local users and groups.
+                       <para>One range will be used for local users and groups and for
+                       non-domain well-known SIDs like Everyone (S-1-1-0) or Creator Owner (S-1-3-0).
+                       A chosen list of well-known SIDs will be preallocated on first start
+                       to create deterministic mappings for those.</para>
+                       <para>
                        Thus the number of local users and groups that can be created is
                        limited by this option as well. If you plan to create a large amount
                        of local users or groups, you will need set this parameter accordingly.