OSF DCE Administration Guide--Core Components

How CDS Looks Up Names
In the /.:/NY_CH clearinghouse, the replica of the /.:/subsys directory contains a child
pointer for the /.:/subsys/PrintQ directory. The child pointer’s XSCDS_Replicas
attribute contains the name and address of the /.:/Paris_CH clearinghouse, where a
replica of the /.:/subsys/PrintQ directory exists.
When a directory has multiple replicas, as is normally the case, the CDS_Replicas
attribute lists all of the clearinghouses containing a replica of the directory. You can use
the dcecp directory show command with the -replica and clearinghouse options to
display this attribute.
Figure 13-4. Child Pointers and Directories
/.:/NY_CH
Node 1 Node 2
/.:/subsys
/.:/Paris_CH
/.:
/.:/subsys/PrintQ
/.:/subsys
/.:/subsys
/.:
/.:/subsys/PrintQ
/.:/subsys
/.:/subsys/PrintQ
/.:
/.:/subsys
/.:/subsys/PrintQ
= Replica
= Child pointer
LEGEND:
13.2 How CDS Finds Names
As Figures 13-1 through 13-4 illustrate, CDS finds information about the physical
location of a resource by looking up one or more attributes that are associated with its
name. First, though, the clerk must know how to find the name. If a name does not yet
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