HP-UX Logical Volume Manager and MirrorDisk/UX Release Notes HP-UX 11i v3 March 2009 (B.11.31) HP Part Number: 5992-6331 Published: March 2009 Edition: 5.
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Table of Contents Logical Volume Manager and MirrorDisk/UX Release Notes......................................5 About this Document..............................................................................................................................5 LVM and MirrorDisk/UX Overview.......................................................................................................5 Overview of Changes...................................................................................................
List of Tables 1 4 LVM Fixes in HP-UX 11i v3 March 2009.........................................................................................
Logical Volume Manager and MirrorDisk/UX Release Notes About this Document This document provides information about the Logical Volume Manager (LVM) and MirrorDisk/UX products in the March 2009 release of HP-UX 11i v3. LVM and MirrorDisk/UX Overview Logical Volume Manager (bundle BaseLVM) is the HP-UX default Volume Manager. It provides the user with flexibility in configuring and managing mass storage resources. In HP-UX 11i v3, the LVM kernel and commands are bundled with the core HP-UX product.
Changed Features The following features have changed in the March 2009 release of LVM and MirrorDisk/UX: vgmodify Enhancements The vgmodify command supports the following new features for Version 2.0 and higher volume groups: • Online reprovisioning Enables you to modify the volume group configuration parameters without deactivating the volume group.
Known Problems Fixed in This Version The following table lists the known LVM and MirrorDisk/UX problems fixed in the March 2009 release of HP-UX 11i v3. Table 1 LVM Fixes in HP-UX 11i v3 March 2009 Defect ID Description QXCR1000824861 In all localized utf8 locales, all LVM display commands produce output with corrupted characters, truncations, and misalignment.
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.
VxVM 4.1 Commands Several VxVM 4.1 commands check whether a specified disk device is being used by LVM before overwriting it. For these commands to correctly check whether a device is part of a Version 2.x volume group, you must install the following patch: • PHCO_37836 Required Disk Space Since LVM is installed with the HP-UX 11i v3 operating environment, it consumes no additional disk space. MirrorDisk/UX consumes no additional disk space aside from a license key.
However, if you want backward-compatible PVLink behavior, you must use legacy device special files for physical volumes, and disable the mass storage stack multipathing for those physical volumes. To disable multipathing on legacy device special files, use the scsimgr command to configure a global device tunable called leg_mpath_enable.
Related Documentation The latest documentation for LVM is available in English at http://docs.hp.com in the HP-UX Operating Environment collection. Available documents include: • • • • • • • • • • • HP-UX Logical Volume Manager and MirrorDisk/UX Release Notes (this version and previous versions) HP-UX System Administrator's Guide: Logical Volume Management (this document is localized) LVM 2.
*5992-6331* Printed in the US
