This test performs a Host Readiness Check in ESX hosts.
As InfiniBox leverages the native multipath I/O capabilities in VMware ESXi, and, on the other hand, VMware configures a failover-only path selection policy for InfiniBox, instead of round-robin, there is a need to reconcile between the two, using a claiming rule. The test looks for such claiming rule.
Details of the claiming rule
|Storage Array Type|
|Path Selection Policy|
|Path Selection Policy options|
This test case fails if:
- There is no claiming rule installed for InfiniBox
- Either of the attached InfiniBox LUNs is not claimed by the InfinBox rule
This test case passes if:
There is a claiming rule for InfiniBox and all the attached InfinBox LUNs are using the settings provided by this rule.
How-to fix this test
Host Power Tools for VMware automatically fixes this issue by creating a claiming rule.
Once this rule is created, all new InfiniBox LUNs are claimed. However, it does not automatically apply to LUNS that are already mapped.
Therefore, Host Power Tools for VMware goes over all InfiniBox LUN mappings and updates their configuration. This is done on-line, without I/O interruption.
Changing the native multi-path I/O handler can be done only via the
esxcli command-line utility, by running
storage nmp satp rule add. see the links below for more information.
- VMware Documentation: vSphere 5.0 esxcli storage command-line reference
- VMware Documentation: vSphere 5.5 esxcli storage command-line reference
- VMware KB: Changing the default pathing policy for new/existing LUNs
- VMware KB: Multipathing policies in ESXi 5.x and ESXi/ESX 4.x
- VMware ESX
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