HP-UX Logical Volume Manager and MirrorDisk/UX Release Notes HP-UX 11i v3 September 2008 (B.11.31) HP Part Number: 5992-4779 Published: September 2008 Edition: 4.
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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...................................................................................................
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 2008 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.
Table 1 LVM Volume Group Version Limits Version 1.0 Version 2.0 Version 2.
Changed Features The following features have changed in the September 2008 release of LVM and MirrorDisk/UX: Display Enhancements The vgdisplay, pvdisplay, and lvmadm commands display additional information. • vgdisplay with the -V VG_vers option displays the volume group information for all volume groups of the specified version. For example: # vgdisplay -V 1.
• pvmove supports moving extents to a specific location on the target physical volume. For example, to move extents from /dev/disk/disk32 to /dev/disk/disk55, starting at physical extent 50 on /dev/disk/disk55, use this command: # pvmove /dev/disk/disk32 /dev/disk/disk55:50 • • pvmove supports striped logical volumes and striped mirrored logical volumes. pvmove supports a new -p option to preview physical extent movement details without performing the move. For more information, see pvmove(1M).
Known Problems and Limitations This section provides a list of known problems and limitations as known to HP at time of publication. If workarounds are available, they are included. LVM Messages Contain Extra Carriage Return in Traditional Chinese Locales Defect ID: Problem: QXCR1000833224 Several LVM commands such as vgdisplay contain an extra carriage return character (control-M) at the end of all their localized messages in the zh_TW.big5 and zh_TW.eucTW locales.
# cp lvm_fixed.cat /usr/lib/nls/msg/zh_TW.big5/lvm.cat # chmod 444 /usr/lib/nls/msg/zh_TW.big5/lvm.cat # chown bin:bin /usr/lib/nls/msg/zh_TW.big5/lvm.cat To correct the zh_TW.eucTW message catalog, repeat these steps, replacing all occurrences of zh_TW.big5 with zh_TW.eucTW.
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.
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. Compatibility Issues This release is specific for HP-UX 11i v3 (B.11.31). The following compatibility issues exist in the September 2008 release of HP-UX 11i v3. Version 2.1 Volume Groups • • • Version 2.
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 may encounter these compatibility issues: • • Version 2.x volume groups: As noted in “Version 2.1 Volume Groups” (page 12), Version 2.x volume groups are not recognized on previous releases of HP-UX. Logical volumes larger than 2 TB: Releases prior to HP-UX 11i v3 can only access data within the first 2 TB of a logical volume.
Software Availability in Native Languages The commands delivered with LVM and MirrorDisk/UX support localized message catalogs. The kernel components which generate messages directly to the console and the system log are available only in the English language. LVM and MirrorDisk/UX manpages are available in English and Japanese.
