HP-UX Logical Volume Manager and MirrorDisk/UX Release Notes HP-UX 11i v3 September 2012 Release (B.11.31) HP Part Number: 5900-2442 Published: September 2012 Edition: 12.
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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 2012 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.
Fixed issues in this version The following table lists the known LVM and MirrorDisk/UX defects fixed in the September 2012 release of HP-UX 11i v3. Table 1 LVM Fixes in HP-UX 11i v3 September 2012 Release Defect ID QXCR1001197843 Description mkfs command will fail with following errors when performed on LVM 2.x VG with LV minor 2047 (7ff hexadecimal).
Table 1 LVM Fixes in HP-UX 11i v3 September 2012 Release (continued) Defect ID QXCR1001136971 Description If pstat_dynamic() is invoked while vgcreate command is running in parallel, a panic occurs with following stack trace: lv_pbufs_usage_body+0x2a0 lv_pbufs_usage+0x30 () pstat_dynamic() pstat+0x10b0 () syscall+0x530 () QXCR1001182973 ( ) 2.x volume groups can fail activation with the following error message if they were migrated from their 1.
vgmodify -a -S modifies a subset of the PVs Defect ID: QXCR1001211881 Problem: Under certain conditions a subset of the PV’s in the vg are changed in size by vgmodify but this has no advantage and leaves the vg susceptible to further problems. Severity: Serious Corrective Action: If the failure occurred on a PV due to lack of free PEs, then use pvmove as suggested in the output of vgmodify to free up extents and retry the vgmodify operation.
value. This does not guarantee that snapshot will not become over-commit. For example, if the I/O rate is faster than auto pre-allocation, the snapshot becomes over-commit. If auto pre-allocation is manually disabled, a message is logged in the syslog. This message is displayed to inform you that further unsharing of data between the snapshot and its successors might end up depleting the extents in the pre-allocated pool and lead to the snapshot and its predecessors being marked as inoperative.
HP Serviceguard To support Version 2.0 volume groups, HP Serviceguard 11.18 requires the April 2008 patch. Customers requiring Version 2.1 volume group support or Version 2.0 and higher cluster lock disks must install the HP Serviceguard September 2008 patch. For more information, see the HP Serviceguard Version A.11.18 Release Notes. Cluster device special files (cDSFs) require the installation of the following patches on HP-UX 11iv3 September 2010 OE: • PHSS_41225 11.31 Serviceguard A.11.20.
Compatibility issues Version 2.x volume groups • Version 2.2 volume groups are not recognized on previous releases of HP-UX, including versions of HP-UX 11i v3 prior to the March 2010 Update release. Version 2.1 volume groups are not recognized on previous releases of HP-UX, including versions of HP-UX 11i v3 prior to the September 2008 release. Version 1.0 volume groups are supported on all supported versions of HP-UX, including 11i v1, 11i v2, and 11i v3.
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.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.
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. In addition, LVM user documentation is available in English at http://www.hp.com/go/ hpux-core-docs.
