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

64 Command differences
Comparison of LVM and VxVM tasks
LVM Increase the number of mirror
copies.
lvextend -m 2 /dev/vol_grp/
lvol_name
VxVM Add mirrors to a volume or increase
the number of plexes.
vxassist mirror vol_name
LVM Convert a mirrored logical volume
into two logical volumes.
Split a logical volume. lvsplit -s backup /dev/vol_grp/
lvol_name
VxVM Snapshot a volume and create a
new volume.
vxassist snapshot vol_name
new_vol_name
LVM Combine two logical volumes back
into a mirrored logical volume
lvmerge /dev/vol_grp/split_vol_name
\
/dev/vol_grp/lvol_name
split_vol_name= active logical
volume
VxVM Returns the snapshot plex to the
original volume from which it was
snapped.
vxassist snapback new_vol_name
LVM Move a mirrored logical volume
from one disk to another.
pvmove -n /dev/vol_grp/lvol_name\ /
dev/dsk/disk_name /dev/dsk/
disk_name2
VxVM Move a plex. vxplex mv orig_plex
new_plex
LVM Synchronize a mirrored logical
volume.
Synchronize extents within a
mirrored logical volume.
lvsync /dev/vol_grp/lvol_name
VxVM Resynchronize operations for the
given volumes.
vxvol resync
LVM Synchronize extents within
mirrored logical volumes in a
volume group.
vgsync /dev/vol_grp
Table 3-2 LVM and VxVM task comparison
Task
type
Description Example
Example for a disk_group = veritasdg, medianame = disk01, vol_name -= veritasvol, plex name
= veritasvol-01, subdisk -= disk01-01, devicename = c0t0d0.