VERITAS Volume Manager 3.5 Migration Guide (August 2002)

Comparison of LVM and VxVM Tasks Final 24 July 2002
46 VERITAS Volume Manager Migration Guide
Comparison of LVM and VxVM Tasks
This section contains a list of tasks which you can perform using LVM, and near
equivalent tasks which you can perform using the VERITAS Volume Manager. You can
perform the LVM tasks by using SAM or the command line interface. Similarly, you can
choose to perform VxVM tasks by using the VERITAS Volume Manager Storage
Administrator or from the command line interface. This document focuses on the
command line interface.
Note The following features in VxVM require an additional license: Mirroring, Mirroring
and Striping, Dynamic Multipathing of Active/Active Devices, Hot-relocation, Online
Migration, and RAID-5.
All the VxVM tasks listed in the task comparison chart can be performed by the VERITAS
Volume Manager Storage Administrator. For more information, refer to the VERITAS
Volume Manager Storage Administrator Administrator’s Guide.
For more information on LVM commands, refer to HP-UX Managing Systems and
Workgroups, and LVM manual pages in the Reference Volumes 2, 3, and 5. For information
onVxVM commands,referto the VERITAS Volume Manager documentationpackage (see
the Preface).
Note Mirroring of a VxVM root disk is supported in this release.
Mirroring in LVM is supported only if you have MirrorDisk/UX already installed
as an add-on product. In addition, mirroring in VxVM requires an additional
license.
lvchange,
lvextend,
lvcreate,
lvreduce
Performsoperationson
logical volumes.
vxvol Operates on volume objects.
No LVM command vxsd Operates on subdisk objects.
No LVM command vxmend Fixes simple misconfigurations.
Table 2. Command Comparison
LVM Description/Action VxVM Description/Action