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qos statistics resource disk show

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Display disk resource utilization data per QoS policy group

Availability: This command is available to cluster administrators at the admin privilege level.

Description

The qos statistics resource disk show command displays the disk utilization for QoS policy groups per node. The disk utilization shows the percentage of time spent on the disk during read and write operations. The command displays disk utilization for system-defined policy groups; however, their disk utilization is not included in the total utilization. The command only supports hard disks.

The command displays the following data:

  • The QoS policy group name (Policy Group)

  • Disk utilization (Disk)

  • The number of HDD data disks utilized (Number of HDD Disks)

The results displayed are sorted by total disk utilization. Each iteration starts with a row that displays the total disk utilization across all QoS policy groups.

Parameters

-node {<nodename>|local} - Node

Selects the policy groups that match this parameter value.

[-iterations <integer>] - Number of Iterations

Specifies the number of times the display is refreshed before terminating. If you do not specify this parameter, the command iterates until interrupted by Ctrl-C.

{ [-rows <integer>] - Number of Rows in the Output

Specifies the number of busiest QoS policy groups to display. Valid values are from 1 to 20. The default value is 10.

| [-policy-group <text>] - QoS Policy Group Name }

Selects the QoS policy group whose name matches the specified value. If you do not specify this parameter, the command displays data for all QoS policy groups.

[-refresh-display {true|false}] - Toggle Screen Refresh Between Each Iteration

Specifies the display style. If true, the command clears the display after each data iteration. If false, the command displays each data iteration below the previous one. The default is false.

Examples

cluster1::> qos statistics resource disk show -node nodeA -iterations 100 -rows 3
        Policy Group          Disk Number of HDD Disks
        -------------------- ----- -------------------
        -total-                40%                  27
        pg1                    22%                   5
        slow                   10%                  10
        fast                    8%                  12
        _System_Default         7%                  20
        -total-                42%                  27
        pg1                    22%                   5
        slow                   12%                  10
        fast                    8%                  12
        _System_Default         7%                  20

The example above displays the total disk utilization for the 3 QoS policy groups with the highest disk utilization and it refreshes the display 100 times before terminating.

cluster1::> qos statistics resource disk show -node local -iterations 100 -policy-group pg1
        Policy Group          Disk Number of HDD Disks
        -------------------- ----- -------------------
        -total-                 3%                  10
        pg1                     1%                  24
        -total-                 3%                  10
        pg1                     1%                  24
        -total-                 3%                  10
        pg1                     1%                  24
        -total-                 3%                  10
        pg1                     1%                  24

The example above displays the total disk utilization for the QoS policy group pg1 and refreshes the display 100 times before terminating.