Technical data

System Dump Analyzer
SHOW CLUSTER
SHOW CLUSTER
Displays connection manager and system communications services (SCS)
information for all nodes in a cluster.
Format
SHOW CLUSTER {/CSID=csid | /NODE=name | /SCS}
Parameters
None.
Qualifiers
/CSID=csid
Displays VAXcluster system information for a specific VAXcluster member node.
The value csid is the cluster system identification number (CSID) of the node to
be displayed.
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/NODE=name
Displays VAXcluster system information for a specific VAXcluster member node.
The value name is the name of the node to be displayed.
/SCS
Displays a view of the cluster as seen by SCS.
Description
By default, the SHOW CLUSTER command provides a view of the VAXcluster
system from the perspective of the connection manager. When you use the /SCS
qualifier, however, SHOW CLUSTER provides a view of the cluster from the
perspective of the port driver or drivers.
VAXcluster as Seen by the Connection Manager
The SHOW CLUSTER command provides a series of displays.
The VAXcluster summary display supplies the following information:
• Number of votes required for a quorum
• Number of votes currently available
• Number of votes allocated to the quorum disk
• Status summary indicating whether a quorum is present
The CSB list displays information about the VAXcluster system blocks (CSB)
currently in operation; there is one CSB assigned to each node of the cluster. For
each CSB, the CSB list displays the following information:
• Its address
• Name of the VAXcluster node it describes
• CSID associated with the node
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You can find the CSID for a specific node in a cluster by examining the CSB list display
of the SHOW CLUSTER command. Other SDA displays refer to a system’s CSID. For
instance, the SHOW LOCK command indicates where a lock is mastered or held by
CSID.
SDA–85