HP-UX 11i June 2001 Release Notes

HP-UX 11i Operating Environment Applications
HP-UX 11i Enterprise Operating Environment (new at 11i original release)
Chapter 4 87
You can use the capabilities of HP OnLineJFS to perform certain key
administrative tasks on mounted JFS file systems; this allows users on
the system to perform their work uninterrupted. These tasks include:
• Defragmenting a file system to regain performance
• Resizing a file system
• Creating a snapshot file system for backup purposes
Documentation
See “New Version of Journaled File System (JFS) (new at 11i original
release)” on page 182 for information about new features in JFS 3.3.
For more information on JFS 3.3 and OnLineJFS 3.3, see the following
books:
• HP JFS 3.3 andHP OnLineJFS 3.3 VERITAS File System 3.3 System
Administrator’s Guide
• Managing Systems and Workgroups: A Guide for HP-UX System
Administrators
Both are available on the Web at:
http://docs.hp.com/
MirrorDisk/UX
Prior to HP-UX 11i, LVM mirroring supported the non-SLVM
environment only. In other words, the disks were only accessible by a
single system and could not be shared by multiple hosts.
Beginning with HP-UX 11i, LVM mirroring automatically enables SLVM
for a two-node environment supporting both non-SLVM and SLVM
environments. All LVM systems can mirror their data on disk, and the
mirrored copy of the data is also accessible from a two-node cluster.
Impact
There are no changes to the LVM command interface to enable LVM
mirroring in the SLVM environment. Therefore, you still use the
lvcreate and the lvextend commands to create mirrored logical
volumes. The only software code changes were made to the HP-UX
kernel and do not affect any LVM manpages, or the MirrorDisk/UX
Version B.11.11 products which are: