VERITAS Volume Manager 3.5 Administrator's Guide (September 2002)

Configuring Newly Added Disk Devices
58 VERITAS Volume Manager Administrator’s Guide
Administering the Device Discovery Layer
Dynamic addition of disk arrays is possible because of the existence of the Device
Discovery Layer (DDL) which is a facility for discovering disks and their attributes that
are required for VXVM and DMP operations.
Administering the DDL is the role of the vxddladm utility which is an administrative
interface to the DDL. You can use vxddladm to perform the following tasks:
◆ List the types of arrays that are supported.
◆ Add support for an array to DDL.
◆ Remove support for an array from DDL.
◆ List information about excluded disk arrays.
◆ List the supported JBODs.
◆ Add JBOD support for disks from different vendors.
◆ Remove support for a JBOD.
The following sections explain these tasks in more detail. For further information, see the
vxddladm(1M) manual page.
Listing Details of Supported Disk Arrays
To list all currently supported disk arrays, use the following command
# vxddladm listsupport
Note Use this command to obtain values for the vid and pid attributes that are used
with other forms of the vxddladm command.
Excluding Support for a Disk Array
To exclude a particular array library from participating in device discovery, use the
following command:
# vxddladm excludearray libname=libvxenc.sl
This example excludes support for a disk array that depends on the library
libvxenc.sl. You can also exclude support for a disk array from a particular vendor, as
shown in this example:
# vxddladm excludearray vid=ACME pid=X1
This array is also excluded from device discovery.