VERITAS Volume Manager 4.1 Hardware Notes

Hardware Notes
The DMP Administration Utility - vxdmpadm
Chapter 1 21
You can use the vxdmpadm utility option listctlr to list all controllers connected to disks that
are attached to the host. For example, to list all controllers connected to disks on the host, use
the following command:
# vxdmpadm listctlr all
to display the output from the above command:
CTLR-NAME ENCLR-TYPE STATE ENCLR-NAME
=====================================================
c0 OTHER ENABLED Disk
c1 Disk ENABLED Disk
c2 Disk ENABLED Disk
The previous displayed output shows that:
• The first controller c0 is connected to disk(s) that are not under any recognized DMP
category.
• The second and third controllers (c1 and c2) are connected to a JBOD (indicated by an
enclosure type of Disk).
All the above controllers are in the ENABLED state which indicates that they are available
for I/O operations.
The state DISABLED is used to indicate that controllers are unavailable for I/O operations.
Theunavailability can be due to a hardware failure or due to I/O operations being disabled on
that controller by the System Administrator. The controller state can be changed by using the
vxdmpadm utility.
To list all the paths that are connected to a particular controller, you can use the getsubpaths
option with the ctlr attribute. For example, use the following command:
# vxdmpadm getsubpaths ctlr=c1
to display the output from the above command:
NAME STATE PATH-TYPE DMPNODENAME ENCLR-TYPE ENCLR-NAME
==================================================================
c1t0d0 ENABLED -c2t0d0 Disk Disk0
c1t1d0 ENABLED -c2t1d0 Disk Disk
c1t2d0 ENABLED -c2t2d0 Disk Disk
c1t3d0 ENABLED -c2t3d0 Disk Disk
c1t4d0 ENABLED -c2t4d0 Disk Disk