Scenario 19

Scenario:

You are the administrator of a vSphere environment in which some performance issues have recently been reported. You want to closely examine various settings related to storage. You want to do most of this work at the command line with the intent that you may be able to build scripts for future use. You want to examine information on a particular storage device (LUN), such as its assigned multipath plug-in and its available paths. You want to examine statistics on each path.

Requirements:

Use an ESXCLI command to display information on all LUNs.

Use an ESXCLI command to display information on just the target LUN.

Use an esxcfg-- command to display details on all the paths to the target LUN.

Use an ESXCLI command to display statistics for just a specific path to the LUN.

Environment Information:

ESXi Host: host-01.lab.local

Target storage device (LUN): naa.6000d771000020d40f1ac91fb172e72e

Runtime name of the specific path: vmhba33:C0:T0:L9

Objective: : 6.4 Troubleshoot Storage Performance and Connectivity

Guide Reference(s):

Chapter 4 - Troubleshoot Storage Performance and Connectivity – Use ESXCLI Commands to Troubleshoot Multipathing and PSA Related Issues

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Solution

Use this command to list information on all storage devices (LUNs):

esxcli storage core device list

Use this command to list information on just a particulate storage device, including its multipathing plug-in assignment:

esxcli storage core device list -d naa.6000d771000020d40f1ac91fb172e72e

Use this command to closely examine the multiple paths:

esxcfg-mpath –l –d naa.6000d771000020d40f1ac91fb172e72e

Use this command to display the statistics for a particular path:

esxcli storage core path stats get --path vmhba33:C0:T0:L9