Veritas Volume Manager 5.0.1 Migration Guide, HP-UX 11i v3, First Edition, November 2009

Table 3-2
LVM and VxVM task comparisons (continued)
ExampleDescriptionTask type
vxdisk rm disk_group
vxdg rmdisk disk_name
vxdg -g group_name rmdisk disk_name
Remove disks from a disk group.VxVM
vgremove /dev/vol_grpRemove an entire volume group.
Before attempting to remove the volume group,
you must remove the logical volumes using
lvremove, and all physical volumes except the
last one using vgreduce.
LVM
vxdg deport disk_groupDeport a disk group. You must unmount and
stop any volumes in the disk group first.
VxVM
vgcreate /dev/vol_grp\ /dev/dsk/
disk_name /dev/dsk/disk_name_2
To remove the link:
vgreduce /dev/vol_grp /dev/dsk/
disk_name
Set up alternate links to a physical volume.
If a disk has two controllers, you can make one
primary and the other an alternate link.
LVM
The DMP feature in VxVM sets up links
automatically. It is not required to set up links
separately.
See manual page vxdmp (7).
See the Veritas Volume Manager
Administrator’s Guide for more information
on DMP.
The Multipathing disk devices in the Volume
Manager represent virtual devices with one or
more physical access paths to a particular
physical disk. Dynamic Multipathing provides
reliability of disk access by dynamically
switching to another physical path in the event
of failure of a path.
VxVM
lvcreate -l num_log_extents -m 1 \
-n mirr_lv /dev/vol_grp
Create a mirrored logical volume.LVM
vxplex att vol_name plex_name
Create a mirrored volume/plex or add a mirror
to an existing volume.
VxVM
lvreduce -m 0 /dev/vol_grp/mirr_lv
lvremove /dev/vol_grp/mirr_lv
Reduce a single/double mirrored logical volume
to an unmirrored logical volume.
Remove a mirrored logical volume.
LVM
67Command differences
Comparison of LVM and VxVM tasks