HP-UX Logical Volume Manager and MirrorDisk/UX Release Notes HP-UX 11i v3 September 2011 Release (B.11.31) HP Part Number: 5900-1755 Published: Septemberl 2011 Edition: 10.
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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 September 2011 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.
Table 1 LVM Fixes in HP-UX 11i v3 September 2011 Release Defect ID Description QXCR10010800671 pvdisplay -v takes a long time to complete if the physical volume has large number of physical extents in use (about 0.5 million extents or more). QXCR10010868661 vgchange -a y reports activation mode conflict failure with the following error message when the previous vgchange -c reported success even though internally it did not change the mode correctly.
Table 1 LVM Fixes in HP-UX 11i v3 September 2011 Release (continued) Defect ID Description QXCR1001101905 There is a small performance penalty when VxFS 5.0.1 is used on a LVM logical volume since LVM unnecessarily restricts async I/Os to 256KB. QXCR10011103941 The lvextend command allocates one extent in the physical volume group which has one physical volume and the remaining extents in the next physical volume group when the logical volume has distributed pvg-strict policy.
0xe00000013121c120 0xe000000000ee19f0 0xe000000000ec6070 Oxe000000000eed820 Oxe000000001e66780 Oxe000000000e9cba1 Severity: Critical Corrective Action: Currently, none.
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.
HP Insight Remote Support Software HP strongly recommends that you install HP Insight Remote Support software to complete the installation or upgrade of your product and to enable enhanced delivery of your HP Warranty, HP Care Pack Service or HP contractual support agreement.
When using LVM configuration commands on legacy device special files, LVM does not select an alternate path if the path corresponding to the specified device special file is unavailable, unless the unavailable path and the alternate path are configured as part of an active volume group. When using LVM configuration commands on persistent device special files, LVM succeeds if at least one of the paths to the device is available.
NOTE: Patch PHKL_36244 adds support for the new MWC format to HP-UX 11i v2. Installing this patch avoids the unnecessary resynchronization. As of this writing, larger logical volumes and striped mirrors are only available on HP-UX 11i v3 and HP-UX 11i v2 (with patches). For up-to-the-moment information, contact your Hewlett-Packard support representative or consult the Hewlett-Packard IT Resource Center site: http://itrc.hp.com (Americas and Asia Pacific) or http://europe.itrc.hp.
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. The HP-UX System Administrator's Guide: Logical Volume Management is available in English, Japanese, and Simplified Chinese. These documents are on http://www.hp.
