Veritas File System v5.0.1 Administrator's Guide for HP-UX 11i v3 (5900-0082, June 2010)

VxFS is capable of increasing or decreasing the file system size while in use. Many
competing file systems can not do this. The VxFS utility fsadm can expand or
shrink a file system without unmounting the file system or interrupting user
productivity. However, to expand a file system, the underlying device on which
it is mounted must be expandable.
VxVM facilitates expansion using virtual disks that can be increased in size while
in use. The VxFS and VxVM packages complement each other to provide online
expansion capability. Use the vxresize command when resizing both the volume
and the file system. The vxresize command guarantees that the file system
shrinks or grows along with the volume. Do not use the vxassist and fsadm_vxfs
commands for this purpose.
See the vxresize(1M) manual page.
See the Veritas Volume Manager Administrator's Guide.
31Introducing Veritas File System
Using Veritas File System