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Example of Fp and Fcp Driver Timeout with Vdisk and Mpgroup Configured on Guest LDOM (Doc ID 2075135.1)

Last updated on DECEMBER 30, 2017

Applies to:

Qlogic FC HBA - Version All Versions and later
Emulex FC HBA - Version All Versions and later
Solaris Operating System - Version 10 3/05 and later
Information in this document applies to any platform.

Purpose

The purpose of this document is to show the expected behavior and timeout values used in the associated drivers when either a FC cable is disconnected or a FC link goes down on a LDOM, which is booting from a vdisk configuring from a two paths mpgroup (one path to one IO domain and the other path to other IO domain). And the vdisk is a LUN residing on a SAN storage array that is connecting to both IO domains via. FC HBAs.

When the problem occurs and without changing on the drivers default timeout values, the application I/Os (Read/Wirte) will be halted for 110 seconds. I/Os will be gracefully resume afterward unless a lower timeout value is set by the application to stop the service.

Details

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