HP-UX Logical Volume Manager and MirrorDisk/UX Release Notes HP-UX 11i v3 August 2011 Web Release (B.11.31) HP Part Number: 5900-1974 Published: October 2011 Edition: 11.
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Contents Logical Volume Manager and MirrorDisk/UX Release Notes...............................4 About this document.................................................................................................................4 LVM and MirrorDisk/UX overview...............................................................................................4 Overview of changes...........................................................................................................
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 August 2011 web 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 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.
For example, with this enhancement, when a VxVM GPT disk is supplied for the LVM pvcreate command, it reports the following error: $ pvcreate /dev/rdisk/disk35 pvcreate: Could not perform LVM operation on VxVM disk “/dev/rdisk/disk35” This enhancement will help customers avoid using VxVM GPT formatted disk in LVM by mistake. However, customers can also enforce the pvcreate operation with the pvcreate -f option.
Table 1 LVM Fixes in HP-UX 11i v3 August 2011 Web Release (continued) Defect ID Description Unique PVID: The contents of the file /etc/lvmconf/pv_lock were overwritten with same data or the file timestamp on the file was modified. Possibly touch or tar -x was performed on the file. There could be delay or failure in the generation of unique PVIDs.
Table 1 LVM Fixes in HP-UX 11i v3 August 2011 Web Release (continued) Defect ID Description 1 QXCR1001145047 In a 2 node cluster, if any server crash happened during deactivation of the volume group in the server node, subsequent vgdisplay on the client node hangs.
Limitations This section provides a list of limitations as known to HP at time of publication. • Logical volumes that have snapshots associated with them might experience an increase in latencies associated with writes. This is also applicable for writes on (writable) snapshots themselves.
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.
environments, plus selected non-HP servers that have a support obligation with HP. It is integrated with HP Systems Insight Manager. A dedicated server is recommended to host both HP Systems Insight Manager and HP Insight Remote Support Advanced. Go to http://www.hp.com/go/insightremotesupport for details on both versions. To download the software, go to Software Depot: http://hp.com/go/softwaredepot Select Insight Remote Support from the menu on the right. Compatibility issues Version 2.
# scsimgr save_attr -a leg_mpath_enable=false Note that this has no effect on multipathing through persistent device special files. For more information, see scsimgr(1M). Moving volume groups from HP-UX 11i v3 to previous HP-UX releases If a volume group used on HP-UX 11i v3 is accessed from a system running a previous release of HP-UX 11i, you might encounter these compatibility issues: • Version 2.x volume groups: As noted in “Version 2.x volume groups” (page 10), Version 2.
NOTE: MORE does not operate in a cluster with both HP-UX 11i v3 September 2009 and HP-UX 11i v3 March 2010 nodes. During a rolling update from HP-UX 11i v3 September 2009 to HP-UX 11i v3 March 2010, you cannot use MORE on the shared volume group. Related documentation LVM and MirrorDisk/UX manpages are installed with the product and provide the latest documentation for all LVM commands and options. These manpages can be displayed via the man command.
