How to Find and Select the Active Service Domain for a MPGROUP Dynamic Path in LDom Config
Last updated on FEBRUARY 23, 2017
Applies to:Solaris SPARC Operating System - Version 10 3/05 and later
Information in this document applies to any platform.
Virtual disk multipathing enables you to configure a virtual disk on a guest domain to access its back-end storage by more than one path.
The paths lead through different service domains that provide access to the same back-end storage, such as a disk LUN.
This feature enables a virtual disk in a guest domain to remain accessible even if one of the service domains goes down.
For example, you can use this configuration to access a LUN from shared storage that is connected to more than one service domain.
So, when the guest domain accesses the virtual disk, the virtual disk driver goes through one of the service domains to access the back-end storage.
If the virtual disk driver cannot connect to the service domain, the virtual disk attempts to reach the back-end storage through a different service domain.
This info should help to find and select the active path in a LDom MPGROUP configuration.
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