VERITAS Volume Manager 3.5 Migration Guide (September 2004)

Chapter 3
Command Differences
Comparison of LVM and VxVM Tasks
46
LVM Mirroring a disk involves several steps. 1. pvcreate /dev/rdsk/ second_disk
2. vgextend /dev/ vol_grp \
/dev/dsk/ second_disk
3. lvextend -m no_of_mirrors \
/dev/vol_grp/ lvol_name \
/dev/dsk/ second_disk
VxVM Mirroring a disk
To mirror volumes on a disk or control
default mirroring and causes a disk to
have its contents mirrored to available
space on another disk.
vxmirror -g disk_group -d yes|no \
disk_name [ new_disk_name ]
vxmirror -d yes disk_name
Option 6 in the vxdiskadm menu performs this
task.
LVM Mirroring an LVM root disk involves
several steps.
1. pvcreate -B /dev/rdsk/ second_disk
2. mkboot -l /dev/dsk/ second_disk
3. vgextend /dev/ vol_grp \
/dev/dsk/ second_disk
4. lvextend -m no_of_mirrors \
/dev/ vol_grp / root_lvol \
/dev/dsk/ second_disk
5. lvlnboot -r /dev/ vol_grp / lvol_name
VxVM Mirroring the VxVM root disk. vxrootmir [-v] [-t tasktag]
disk_access_name | disk_media_name
LVM Create a logical volume in LVM volume
group.
lvcreate -L vol_size /dev/ vol_grp
VxVM Create a volume of one of these layout
types:
A concatenated volume
A striped mirror volume
A RAID-5 volume
vxassist make vol_name length
vxassist make vol_name length
layout=mirror, stripe
vxassist make vol_name length layout=raid5
LVM Display information about logical volumes lvdisplay /dev/ vol_grp / vol_name
VxVM Display all volume information.
Display information about a specific
volume.
vxprint -vt
vxprint -ht vol_name
Table 3-2 LVM and VxVM Task Comparison (Continued)
Task
Type
Description Example