Viewing extent pool properties and performance metrics

Complete this task to display the detailed properties for the list of extent pools in a storage unit and to view the performance metrics status information on each extent pool in the list.

You must know and use an extent pool ID that resides in your storage unit. You can obtain these IDs by issuing the lsextpool command.

Issue the showextpool command when you want to view the details of the properties that are associated with an extent pool or when you want to view the performance metrics for an extent pool in your storage unit.

Perform the following steps to display the detailed properties of an extent pool or to display the performance metrics of an extent pool.

  1. (For detailed properties information) Issue the showextpool command. Enter the showextpool command at the dscli command-line prompt with the following parameters and variables:
    dscli>showextpool -dev storage_image_ID extentpool_ID
  2. (For performance metrics information) Issue the showextpool command. Enter the showextpool at the dscli command-line prompt with the following parameters and variables:
    dscli>showextpool -dev storage_image_ID -metrics extentpool_ID
    Notes:
    1. All performance metrics are an accumulation since the most recent counter wrap or counter reset.
    2. The extent pool performance counters are reset on the following occurrences:
      • When the storage unit is turned on.
      • When a server has failed, and the failover and failback sequence is performed.
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