Veritas Volume Manager 5.0 Migration Guide, HP-UX 11i v3, First Edition, May 2008

56 Command differences

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 Veritas Volume Manager. You can

perform the LVM tasks by using SMH or the command line interface. Similarly,

you can choose to perform VxVM tasks by using the Veritas Enterprise

Administrator (VEA) or 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 Enterprise Administrator. For more information, refer to the Veritas

Enterprise Administrator User’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 on VxVM commands, refer to the Veritas Volume Manager

documentation package.

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.

Table 3-2 LVM and VxVM task comparison

Task

type

Description Example

LVM Create an LVM disk. pvcreate /dev/rdsk/disk_name

VxVM Bring a disk under Volume

Manager control.

vxdiskadd device_name

Option 1 in the vxdiskadm menu adds a

disk and initializes it.

LVM Create a volume group vgcreate /dev/vol_grp /dev/dsk/

disk_name

Example for a disk_group = veritasdg, medianame = disk01, vol_name -= veritasvol, plex name

= veritasvol-01, subdisk -= disk01-01, devicename = c0t0d0.