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HITACHI SAN Array Presents Excessive Disks/Paths per LUN with High LUN Numbers (Doc ID 798373.1)

Last updated on AUGUST 04, 2018

Applies to:

Linux Kernel - Version: 2.6 to 2.6
Oracle VM - Version: 2.1 to 2.1.5
Linux Itanium
Linux x86-64

Symptoms

Significantly more Paths than expected are listed for LUNs on an Hitachi storage array e.g. 36 as opposed to 4.
Some devices are not shown completely.

[root@test1 dev]# multipath -ll
360060e8014427b000001427b001021aadm-2 HITACHI,OPEN-V
[size=56G][features=0][hwhandler=0]
\_ round-robin 0 [prio=8][enabled]
\_ 1:0:0:49155 sdu 65:64  [active][ready]

The issue is known to affect Oracle/Red Hat Enterprise Linux 5/Oracle VM (OEL5/RHEL5/OVM) systems, however, does not OEL4/RHEL4 systems.

Changes

Changes likely to account for the issue include:

Cause

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In this Document
  Symptoms
  Changes
  Cause
  Solution
  References

This document is being delivered to you via Oracle Support's Rapid Visibility (RaV) process, and therefore has not been subject to an independent technical review.

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