| 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.
|
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.
|
LVM
|
Export and deactivate an LVM volume group, and its associated logical volumes.
|
vgchange -a n vol_group
vgexport /dev/vol_group
|
VxVM
|
Deport a disk group to disable access to the specified disk group. A disk group cannot be deported if any volumes in the disk group are currently open.
|
vxdg deport disk_group
Option 9 in the vxdiskadm menu performs this task.
|
LVM
|
Back up volume group configuration information.
|
vgcfgbackup -f /pathname/filename vol_grp
|
VxVM
|
Back up volume group configuration information.
|
dgcfgbackup -f /pathname/filename vol_grp
|
LVM
|
Restore volume group configuration to a particular physical volume.
|
vgrestore -n /dev/vol_grp /dev/rdsk/disk_name
|
VxVM
|
Restore volume group configuration to a particular physical volume.
|
dgcfgrestore -n /dev/vol_grp /dev/rdsk/disk_name
|
LVM
|
Increase or decrease secondary swap space.
Enlarge an existing swap logical volume, or add a new swap logical volume.
|
lvextend---to increase swap space
lvreduce---to decrease swap space
|
VxVM
|
Add a new swap volume (HP-UX 11i Version 1.5 only).
|
vxassist make swapvol2 size (HP-UX 11i Version 1.5 only)
|
LVM
|
Remove a volume group.
This destroys a volume group by removing its last disk and removing it from /etc/lvmtab.
|
vgremove /dev/vol_grp
This is preceded by lvremove and vgreduce down to the last disk.
|
VxVM
|
Destroy a disk group.
|
vxdg deport disk_group
vxdg init disk_group
|
LVM
|
Extend a volume group by adding LVM disks to the volume group.
|
vgextend /dev/vol_grp/\ /dev/dsk/disk_name
|
VxVM
|
Add one or more disks to the disk group.
|
vxdiskadd disk_name
Option 1 in the vxdiskadm main menu performs this task.
|
LVM
|
Reduce a volume group by reducing the number of disks in a volume group
|
vgreduce /dev/vol_grp /dev/dsk/disk_name
|
VxVM
|
Remove a disk from disk group.
|
vxdg -g disk_group -k rmdisk disk_name
|
LVM
|
Mirroring a disk involves several steps.
|
- pvcreate /dev/rdsk/second_disk
- vgextend /dev/vol_grp \ /dev/dsk/second_disk
- 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.
|
- pvcreate -B /dev/rdsk/second_disk
- mkboot -l /dev/dsk/second_disk
- vgextend /dev/vol_grp \ /dev/dsk/second_disk
- lvextend -m no_of_mirrors \ /dev/vol_grp/root_lvol \ /dev/dsk/second_disk
- 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/lvol_name
|
VxVM
|
Display all volume information.
Display information about a specific volume.
|
vxprint -vt
vxprint -ht vol_name
|
LVM
|
Display information about volume groups.
|
vgdisplay -v /dev/vol_grp
|
VxVM
|
Display disk group information.
Display information about a specific disk group.
|
vxdisk list
vxprint -g disk_group
vxdg list
vxdisk list disk_group
|
LVM
|
Display information about physical volumes.
|
pvdisplay /dev/dsk/disk_name
|
VxVM
|
Display information about Volume Manager volumes.
|
vxinfo or vxprint
|
LVM
|
Remove a logical volume.
|
lvremove /dev/vol_grp/lvol_name
|
VxVM
|
Remove a volume.
|
vxedit rm vol_name
|
LVM
|
Remove disks from a volume group or reduce the number of disks in the volume group.
|
vgreduce /dev/vol_grp /dev/dsk/disk_name
|
VxVM
|
Remove disks from a disk group.
|
vxdisk rm disk_group
vxdg rmdisk disk_name
vxdg -g group_name rmdisk disk_name
|
LVM
|
Remove an entire volume group.
Before attempting to remove the volume group, you must remove the logical volumes using lvremove, and all physical volumes except the last one using vgreduce.
|
vgremove /dev/vol_grp
|
VxVM
|
Deport a disk group. You must unmount and stop any volumes in the disk group first.
|
vxdg deport disk_group
|
LVM
|
Set up alternate links to a physical volume.
If a disk has two controllers, you can make one primary and the other an alternate link.
|
vgcreate /dev/vol_grp\ /dev/dsk/disk_name /dev/dsk/disk_name_2
To remove the link:
vgreduce /dev/vol_grp /dev/dsk/disk_name
|
VxVM
|
The Multipathing disk devices in the Volume Manager represent virtual devices with one or more physical access paths to a particular physical disk. Dynamic Multipathing provides reliability of disk access by dynamically switching to another physical path in the event of failure of a path.
|
The DMP feature in VxVM sets up links automatically. It is not required to set up links separately.
Refer to the manual page vxdmp (7) and the VERITASs Volume Manager Administrator's Guide for more information on DMP.
|
LVM
|
Create a mirrored logical volume.
|
lvcreate -l num_log_extents -m 1 -n mirr_lv /dev/vol_grp
|
VxVM
|
Create a mirrored volume/plex
or add a mirror to an existing volume.
|
vxassist make vol_name length layout=mirror
|
LVM
|
Reduce a single/double mirrored logical volume to an unmirrored logical volume.
Remove a mirrored logical volume.
|
lvreduce -m 0 /dev/vol_grp/mirr_lv
lvremove /dev/vol_grp/mirr_lv
|
VxVM
|
Remove mirrors or reduce the number of plexes/mirrors.
Remove a volume with the plexes associated with it.
|
vxplex -o rm dis plex_name
vxedit -rf rm vol_name
|
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
|
VxVM
|
Resynchronize operations for the named volumes, or for volumes residing on the named disks.
If no medianame or volume operands are specified, then the operation applies to all volumes.
|
vxrecover -s vol_name
|
LVM
|
Start a volume.
|
lvchange -a y /dev/vol_grp/lvol_name
|
VxVM
|
Start a volume.
|
vxrecover -s vol_name
vxvol start vol_name
|
LVM
|
Stop a volume.
|
lvchange -a n /dev/vol_grp/lvol_name
|
VxVM
|
Stop a volume.
|
vxvol stop vol_name
|
LVM
|
Make a disk available as a hot spare.
|
pvchange -z y /dev/dsk/disk_name
|
VxVM
|
Make a disk available as a hot spare.
|
vxedit set spare=on disk_name
|
Example for a disk_group = veritasdg, medianame = disk01, vol_name -= veritasvol, plex name = veritasvol-01, subdisk -= disk01-01, devicename = c0t0d0.
|
|---|
Note
The following features in VxVM require an additional license: Mirroring, Mirroring and Striping, Dynamic Multipathing of Active/Active Devices, Hot-relocation, Online Migration, and RAID-5.