Veritas Storage Foundation Intelligent Storage Provisioning 5.0 AdministratorÆs Guide, HP-UX 11i v3, First Edition, May 2008

45Understanding ISP

Examples of using ISP from the command line

This section provides examples of using ISP from the command line and

provides pointers to where more information can be found. You can also find

summaries of the usage of commonly used commands in “Command summary”

on page 205. Further examples may be found in “Examples of using ISP” on

page 209 and in the manual page for each command.

Creating a data storage pool

Assuming that you have created a disk group, mydg, that contains several disks

that you have initialized for use with VxVM, the following command creates a

data storage pool, mypool, containing several disks, which supports the

creation of striped-mirror volumes:

# vxpool -g mydg create mypool \

dm=mydg01,mydg02,mydg03,mydg04,mydg04,mydg06 \

pooldefinition=stripe_mirror_volumes

See “Creating a storage pool” on page 52.

Adding disks to a storage pool

You can use the vxpool adddisk command to add initialized disks to a storage

pool. For example, this command adds two disks to the storage pool, mypool:

# vxpool -g mydg adddisk mypool dm=mydg07,mydg08

See “Adding disks to a storage pool” on page 55.

Creating an application volume

The following command creates a striped-mirror volume with three columns

and two mirrors in the data storage pool, mypool, by specifying the capability

DataStripeMirror together with the appropriate parameters:

# vxassist -g mydg -P mypool make stmrvol 2g \

capability=’DataStripeMirror(ncols=3,nmirs=2)’ init=active

The init=active attribute makes the volume immediately available for use

without performing any synchronization.

Having created the application volume, stmrvol, you can use the following

command to prepare it for use with volume snapshots:

# vxassist -g mydg -P mypool addlog stmrvol nlog=2 logtype=dco

This command associates a data change object (DCO) and DCO volume with the

volume. The attribute nlog is used to specify that the DCO volume has the same

redundancy as the original volume. Alternatively, you can use the

vxsnap

prepare command to set up the volume for snapshots:

# vxsnap -g mydg prepare stmrvol ndcomirs=2