Oracle Linux Or OVM: Native Multipath Layer Does Not Discover Physical Path Devices For LUN: "multipathd: sdXX: failed to get path uid" (Doc ID 2181221.1)

Last updated on SEPTEMBER 29, 2016

Applies to:

Oracle VM - Version 3.2.1 to 3.4.1 [Release OVM32 to OVM34]
Linux OS - Version Oracle Linux 5.1 to Oracle Linux 7.2 [Release OL5U1 to OL7U2]
Linux x86
Linux x86-64

Symptoms

The native multipath subsystem will group several physical paths into a single logical block device.  Using the logical block device to access the LUN helps the server survive the loss of one or more physical paths to storage.  Use the multipath(8) tool to view the paths to storage from the multipath subsystem viewpoint:

Cause

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