Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

By default, all auto-configured disks are formatted as cdsdisk disks when they
are initialized for use with VxVM. You can change the default format by using the
vxdiskadm(1M) command to update the /etc/default/vxdisk defaults file.
See “Displaying or changing default disk layout attributes” on page 109.
See the vxdisk(1M) manual page.
Discovering and configuring newly added disk devices
When you physically connect new disks to a host or when you zone new fibre
channel devices to a host, you can use the vxdctl enable command to rebuild
the volume device node directories and to update the DMP internal database to
reflect the new state of the system.
To reconfigure the DMP database, first run ioscan followed by insf to make the
operating system recognize the new disks, and then invoke the vxdctl enable
command.
You can also use the vxdisk scandisks command to scan devices in the operating
system device tree, and to initiate dynamic reconfiguration of multipathed disks.
If you want VxVM to scan only for new devices that have been added to the system,
and not for devices that have been enabled or disabled, specify the -f option to
either of the commands, as shown here:
# vxdctl -f enable
# vxdisk -f scandisks
However, a complete scan is initiated if the system configuration has been modified
by changes to:
■ Installed array support libraries.
■ The list of devices that are excluded from use by VxVM.
■ DISKS (JBOD), SCSI3, or foreign device definitions.
See the vxdctl(1M) manual page.
See the vxdisk(1M) manual page.
Partial device discovery
Dynamic Multi-Pathing (DMP) supports partial device discovery where you can
include or exclude sets of disks or disks attached to controllers from the discovery
process.
83Administering disks
Discovering and configuring newly added disk devices