HP OpenVMS System Manager's Manual, Volume 2:...

Managing DECdtm Services

Dismounting a Disk

Removing a Node

Adding a Node  

How to Perform This Task

Before you perform this task, the new node must be configured into the cluster. For instructions on how to configure a node into a cluster, refer to OpenVMS Cluster Systems.

1. Decide the size and location of the new node's transaction log, using the guidelines in Planning Transaction Logs. Remember that the disk must have enough contiguous space to hold the log.
2. Make sure that the disk on which you want to create the transaction log is mounted clusterwide.
3. Decide which directory you want to create the new transaction log in. You may want to create a new directory for the transaction log.
4. Make sure that SYS$JOURNAL points to the directory in which you want to create the new node's transaction log. If SYS$JOURNAL does not point to this directory, use SYSMAN to redefine SYS$JOURNAL clusterwide:DO DEFINE/SYSTEM/EXECUTIVE_MODE SYS$JOURNAL dirspec[,...] where dirspec is the full specification of a directory containing one or more transaction logs. List all the directories that contain transaction logs, including the directory in which you want to create the new node's transaction log. You can list the directories in any order.
5. If you redefined SYS$JOURNAL in step 4, edit the SYS$MANAGER:SYLOGICALS.COM command procedure to update the SYS$JOURNAL definition.
   
   If you created node-specific versions of SYLOGICALS.COM, edit all the versions.
6. Create the transaction log, using LMCP's CREATE LOG command: CREATE LOG [/SIZE=size] dirspecSYSTEM$node.LM$JOURNAL where:

   size	is the size of the transaction log in blocks. By default, the size of the transaction log is 4000 blocks.
   dirspec	is the full specification of the directory in which you want to create the transaction log.
   node	is the name of the new node.

   
   

Example

This example shows how to create a transaction log for a new node, whose SCSNODE name is WHITE.

In this example, the cluster members and the locations of their transaction logs are as follows:

Node	Directory Containing Log
BLUE	DISK$LOG3:[LOGFILES]
RED	DISK$LOG2:[LOGFILES]

Neither node has a node-specific version of SYLOGICALS.COM.

Decide the size and location of WHITE's transaction log:

Node	Size of Log (in Blocks)	Disk
WHITE	5000	DUA4

Mount the disk DUA4 clusterwide:

$ MOUNT/CLUSTER/SYSTEM DUA4: LOG4

$ CREATE/DIRECTORY DISK$LOG4:[LOGFILES]

$ RUN SYS$SYSTEM:SYSMAN
SYSMAN> SET ENVIRONMENT/CLUSTER
SYSMAN> DO DEFINE/SYSTEM/EXECUTIVE_MODE SYS$JOURNAL - 
_SYSMAN> DISK$LOG2:[LOGFILES], DISK$LOG3[LOGFILES], DISK$LOG4:[LOGFILES]
SYSMAN> EXIT

$ RUN SYS$SYSTEM:LMCP
LMCP> CREATE LOG/SIZE=5000 DISK$LOG4:[LOGFILES]SYSTEM$WHITE.LM$JOURNAL
LMCP> EXIT

Dismounting a Disk

Removing a Node