Veritas File System 5.1 SP1 Administrator"s Guide (5900-1499, April 2011)

Volume encapsulation

Multi-volume support enables the ability to encapsulate an existing raw volume

and make the volume contents appear as a file in the file system.

Encapsulating a volume involves the following actions:

■ Adding the volume to an existing volume set.

■ Adding the volume to the file system using fsvoladm.

Encapsulating a volume

The following example illustrates how to encapsulate a volume.

To encapsulate a volume

List the volumes:

# vxvset -g dg1 list myvset

VOLUME INDEX LENGTH STATE CONTEXT

vol1 0 102400 ACTIVE -

vol2 1 102400 ACTIVE -

The volume set has two volumes.

Create a third volume and copy the passwd file to the third volume:

# vxassist -g dg1 make dbvol 100m

# dd if=/etc/passwd of=/dev/vx/rdsk/rootdg/dbvol count=1

1+0 records in

1+0 records out

The third volume will be used to demonstrate how the volume can be accessed

as a file, as shown later.

Create a file system on the volume set:

# mkfs -F vxfs /dev/vx/rdsk/rootdg/myvset

version 7 layout

204800 sectors, 102400 blocks of size 1024,

log size 1024 blocks

largefiles supported

Mount the volume set:

# mount -F vxfs /dev/vx/dsk/rootdg/myvset /mnt1

Multi-volume file systems

Volume encapsulation