VERITAS Volume Manager 4.1 Migration Guide

Command Differences
Comparison of LVM and VxVM Tasks
Chapter 3 59
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.
LVM Reduce a logical volume. lvreduce -L to_size
/dev/ vol_grp / lvol_name
-L indicates the number of megabytes.
VxVM Reduce a volume by or to a
given length.
vxresize -g disk_group -F vxfs
vol_name to_length
vxassist -b shrinkby vol_name length
vxassist -b shrinkto vol_name
newlength
Shrink the file system before reducing the
volume.
LVM Import and activate a volume
group.
vgimport -v /dev/ vol_grp \
/dev/dsk/ disk_name
vgchange -a y /dev/ vol_grp
VxVM Import a disk group to make
the specified disk group
accessible on the local machine.
vxdg -tfC -n newname import
disk_group
Option 8 in the vxdiskadm menu performs
this task.
Table 3-2 LVM and VxVM Task Comparison (Continued)
Task
Type
Description Example