Raj2796's Blog

September 25, 2009

EVA4400 OS unit ID in VDisk presentation properties error

Filed under: eva,san — raj2796 @ 11:43 am

hp

The Vdisk OS Unit ID is cleared from the graphical user interface (GUI) and set to 0 after upgrading to xcs 9522000. Seems this is yet another known bug, from hp:

SUPPORT COMMUNICATION – CUSTOMER ADVISORY

Document ID: c01849072

Version: 1
ADVISORY: HP StorageWorks Command View EVA software refresh clears virtual disk operating system unit ID in user interface
NOTICE: The information in this document, including products and software versions, is current as of the Release Date. This document is subject to change without notice.

Release Date: 2009-08-19

Last Updated: 2009-08-19
DESCRIPTION

After an HP StorageWorks Command View EVA software refresh, the Vdisk OS Unit ID is cleared from the graphical user interface (GUI). This only affects the setting within the GUI and not in the actual virtual disk setting.

For customers using OpenVMS hosts, not having the OS Unit ID displayed as a visible reminder could lead to duplicate unit IDs entered and presented to a host, which can result in data loss.

Also, when saving any changes under the Vdisk Presentation tab, ensure that the OS Unit ID is set to the desired value.
SCOPE

This issue affects the GUI setting in HP StorageWorks Command View EVA software versions 9.00.00, 9.00.01, 9.01.00, and 9.01.01. The issue has not been seen to affect the actual virtual disk setting.
RESOLUTION

This issue will be addressed in next full release of HP StorageWorks Command View EVA software, tentatively scheduled for release in early 2010.
Workaround

To track OS Unit IDs , use one of the following options:

*

In the HP Command View EVA software GUI, add OS Unit ID and presentation host ID information to the comment field of the Virtual Disk.
*

Using HP SSSU, write a script to collect OS Unit ID from the array for each virtual disk presented to the OpenVMS host.
*

Use the following command to collect the WWID and the OS Unit ID numbers on the OpenVMS hosts:

$ SHOW DEVICE/FULL $1$DGA

In the output, the DGA device number is the OS Unit ID. The WWID listed in the output can be used to match to the WWID either from the HP Command View EVA display or from an SSSU data collection script.

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