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Displaying information about the SRL volumes for all the hosts in the RDS

The vrstat -S command displays detailed statistics about the SRL for every host within the RDS. This command can be executed from the Primary and the Secondary.

To view information on all the SRL volumes for every host in an RDS:

# vrstat -S [local_rvgname]

The argument local_rvgname is the name of the RVG on the local host and is optional. The local RVG name represents its RDS.

If you specify the local_rvgname name, the vrstat -S command displays information about the SRL in the RDS. Otherwise, the command displays information about the SRL in all the RDSs.

The output of the vrstat command resembles:

Mon Oct 27 15:53:11 2003

Replicated Data Set hr_rvg:

SRL-I/O Statistics:

HOST NAME OPERATIONS BLOCKS AVG TIME(ms)

READ WRITE READ WRITE READ WRITE

seattle hr_srl 0 258 0 132885 0.0 17.6

london hr_srl 0 0 0 0 0.0 0.0

Mon Oct 27 15:53:21 2003

Replicated Data Set hr_rvg:

SRL-I/O Statistics:

HOST NAME OPERATIONS BLOCKS AVG TIME(ms)

READ WRITE READ WRITE READ WRITE

seattle hr_srl          0 143 0     73430 0.0 17.6

london hr_srl          0 0 0 0 0.0 0.0

The output of this command includes the following details:

• The host_name of the host for which the information is being displayed. For an RVG in a shared disk group, host_name is the logowner, and the displayed information reflects activity on the logowner host.
• Name of the SRL volume for which the information is being displayed.
• The total number of read and write operations performed on a volume.
• Number of blocks that have been read from or written to the volume.
• Average time in milliseconds to complete the read and write operations.