vovshowconnection

Show connection between two nodes in the trace.


vovshowconnection: Usage Message

DESCRIPTION:
  Show connection between two nodes in the trace.

USAGE:
  % vovshowconnection \[option\] -from NODESPEC -to NODESPEC
  
  where NODESPEC is either a VovId or the name of a file.

OPTIONS:
  -l            -- longer format without label field size limit
  -ll           -- full   format without any field size limits
  -O  <format>  -- choose output format. For reference:
                   default = "@LEVEL:4@ @NODETYPE:6@ @ID@ @LABEL:70@"
                   long    = "@LEVEL:3@ @NODETYPE:6@ @ID@ @LABEL@"
                   longer  = "@LEVEL@ @NODETYPE@ @ID@ @LABEL@"

EXAMPLES:
  % vovshowconnection -from 00123456 -to 00223344
  % vovshowconnection -ll -from aa -to zzz
  % vovshowconnection -O "@LEVEL@ @ID@ @NAME@" -from aa -to zzz

Comments

The command works by using the fast, powerful, set operations in FlowTracer to find the down-cone of the -from node, and the up-cone of the -to node, and then finding their intersection.

The command has two mandatory parameters, the 'from' nodespec and the 'to' nodespec. 
-from  Specify the nodespec of the 'from' node
-to    Specify the nodespec of the 'to' node

A node specification, or 'nodespec' for short, is either the VovID of a place (file) or a transition (job), or the name of a file in the flow graph.

There are two options to control the output format, and one to get usage information. 
-h   Show brief usage information
-l   longer format without label field size limit
-ll  full format without any field size limits