VERITAS Volume Manager 3.5 Migration Guide (September 2004)

Chapter 3
Command Differences
Comparison of LVM and VxVM Tasks
44
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