VERITAS Volume Manager 3.1 Migration Guide

Command Differences
Comparison of LVM and VxVM Tasks
Chapter 3 69
disk_group = veritasdg, medianame = disk01, vol_name -=
veritasvol, plex name = veritasvol-01, subdisk -= disk01-01,
devicename = c0t0d0.
Table 3-2LVM 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
VxVM Create a disk group. vxdg init disk_group disk_name
Option 1 in the vxdiskadm menu
performs this task.
LVM Add a new disk to the existing
volume group.
vgextend /dev/ vol_grp /dev/rdsk/
disk_name
VxVM Add a disk to an existing disk
group.
vxdg -g disk_group adddisk
disk= devicename
LVM Extend a logical volume or
increase space allocated to a
logical volume.
lvextend -l 50
/dev/ vol_grp / lvol_name
l—indicates the number of logical
extents in the logical volume
VxVM Increase the volume by or to a
given length.
vxresize -g disk_group -F vxfs
vol_name length
vxassist growto vol_name
new_length
vxassist growby vol_name
length_change
Grow the file system after growing the
volumes.