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 2.6Oracle 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:- You have recently deployed OEL5/RHEL5 systems that use an Hitachi storage array
- You have recently upgraded from OEL4/RHEL4 to OEL5/RHEL5
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. |