HP-UX Logical Volume Manager and MirrorDisk/UX Release Notes (September 2009)

Known Problems and Limitations
No known problems were identified for this release of LVM and MirrorDisk/UX.
Installation Requirements
This section describes the installation requirements for this release.
Required Hardware
LVM and MirrorDisk/UX have no hardware requirements beyond the requirements of the HP-UX
11i v3 operating system. Both products run on all supported HP 9000 and HP Integrity servers.
Required Software
Because LVM is installed with the HP-UX 11i v3 operating environment, there are no software
requirements beyond the requirements of the HP-UX 11i v3 operating system. MirrorDisk/UX
requires the BaseLVM product.
Required Patches
In HP-UX 11i v3, LVM and MirrorDisk/UX do not require any software patches.
For each of the following subsystems, you can download patches from the following website:
http://www2.itrc.hp.com/service/patch/mainPage.do
Mass Storage Critical Resource Analysis
The Mass Storage Critical Resource Analysis (MS CRA) tool checks for a maximum of two mirror
copies of a logical volume. However, Version 2.0 and higher volume groups allow up to five
mirror copies. To enable MS CRA to check for a maximum of five mirror copies of a volume, you
must install the following patch, or a superseding patch:
• PHCO_37562
MS CRA checks for a maximum of 511 physical volumes in a volume group. However, Version
2.1 volume groups allow up to 2048 physical volumes. To enable MS CRA to check for a maximum
of 2048 physical volumes in a volume group, you must install the following patch:
• PHCO_38145
PHCO_38145 supersedes PHCO_37562. Installing PHCO_38145 enables both checks.
mkfs and mkboot Commands
The mkfs and mkboot commands check whether a specified disk device is being used by LVM;
if so, they display an error message. For these commands to correctly check whether a device is
part of a Version 2.x volume group, you must install the following patches:
• PHCO_37328
• PHCO_37340
• PHCO_37394
These patches are delivered in the FEATURE11i bundle.
HP Serviceguard
To support Version 2.0 volume groups, HP Serviceguard 11.18 requires the April 2008 patch.
Customers requiring Version 2.1 volume group support or Version 2.0 and higher cluster lock
disks must install the HP Serviceguard September 2008 patch. For more information, see the HP
Serviceguard Version A.11.18 Release Notes.
Known Problems and Limitations 9