Veritas File System 5.1 SP1 Administrator"s Guide (5900-1499, April 2011)

■ Remove resource information for a cluster file system
See the VEA online help.
Veritas Operations Manager
Symantec recommends use of Veritas Operations Manager to manage Storage
Foundation and Cluster Server environments.
Veritas Operations Manager provides a centralized management console for
Veritas Storage Foundation and High Availability products. You can use Veritas
Operations Manager to monitor, visualize, and manage storage resources and
generate reports. Veritas Operations Manager is not available on the Storage
Foundation and High Availability Solutions release. You can download Veritas
Operations Manager at no charge at http://go.symantec.com/vom.
Refer to the Veritas Operations Manger documentation for installation, upgrade,
and configuration instructions.
Online system administration
VxFS provides command line interface (CLI) operations that are described
throughout this guide and in manual pages.
VxFS allows you to run a number of administration tasks while the file system is
online. Two of the more important tasks include:
■ Defragmentation
■ File system resizing
About defragmentation
Free resources are initially aligned and allocated to files in an order that provides
optimal performance. On an active file system, the original order of free resources
is lost over time as files are created, removed, and resized. The file system is
spread farther along the disk, leaving unused gaps or fragments between areas
that are in use. This process is known as fragmentation and leads to degraded
performance because the file system has fewer options when assigning a free
extent to a file (a group of contiguous data blocks).
VxFS provides the online administration utility fsadm to resolve the problem of
fragmentation.
The fsadm utility defragments a mounted file system by performing the following
actions:
■ Removing unused space from directories
31Introducing Veritas File System
Using Veritas File System