HP-UX Logical Volume Manager and MirrorDisk/UX Release Notes HP-UX 11i v3 September 2007 (B.11.31) HP Part Number: 5992-0566 Published: September 2007 Edition: 1.
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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 LVM...................................................................................................................
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 September 2007 release of HP-UX 11i v3. LVM and MirrorDisk/UX Overview LVM 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.
NOTE: HP recommends using the multi-pathing features provided by the mass storage stack instead of LVM's alternate links, as described in “Moving from HP-UX 11i v2 to HP-UX 11i v3” (page 9). The proactive polling feature is provided for backward compatibility with previous releases, or if native multi-pathing is disabled. HP recommends configuring LVM volume groups using persistent device special files.
# lvextend -s –m 1 /dev/vg00/lvol8 /dev/disk/disk4 # lvsync -T /dev/vg00/lvol* See lvmerge(1M), lvextend(1M), lvsync(1M), and vgsync(1M) for more information. Changed Features No LVM or MirrorDisk/UX features changed in the September 2007 release of HP-UX 11i v3. Deprecated or Obsolete Features No LVM or MirrorDisk/UX features are deprecated or obsolete in the September 2007 release of HP-UX 11i v3.
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 Since 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.
Compatibility Issues This release is specific for HP-UX 11i v3 (B.11.31). The following compatibility issues exist in the February 2007 release of HP-UX 11i v3, as well as the September 2007 release. Moving from HP-UX 11i v2 to HP-UX 11i v3 If you are migrating a system from HP-UX 11i v2 to HP-UX 11i v3, please refer to the LVM migration white paper described in the “Related Documentation” section.
NOTE: PHKL_36244 adds support for the new MWC format to HP-UX 11i v2. Installing that patch avoids the unnecessary resynchronization. In the future, HP may add support of larger logical volumes and striped mirrors to previous releases of HP-UX 11i. However, as of this writing, these features are only available on HP-UX 11i v3. For up-to-the-moment information, contact your Hewlett-Packard support representative or consult the Hewlett-Packard IT Resource Center site: http://itrc.hp.
