VERITAS Volume Manager 3.5 Administrator's Guide (September 2004)

Administering Dynamic Multipathing (DMP)
Administering DMP Using vxdmpadm
Chapter 3124
Administering DMP Using vxdmpadm
The vxdmpadm utility is a command line administrative interface to the
DMP feature of VxVM.
You can use the vxdmpadm utility to perform the following tasks.
• Retrieve the name of the DMP device corresponding to a particular
path
• List all paths under a DMP device
• List all controllers connected to disks attached to the host
• List all the paths connected to a particular controller
• Enable or disable a host controller on the system
• Rename an enclosure
• Control the operation of the DMP restore daemon
The following sections cover these tasks in detail along with sample
output. For more information, see the vxdmpadm(1M) manual page.
Retrieving Information About a DMP Node
The following command displays the DMP node that controls a
particular physical path:
# vxdmpadm getdmpnode nodename=c3t2d1
/dev/rdsk directory.
Use the enclosure attribute with getdmpnode to obtain a list of all DMP
nodes for the specified enclosure.
# vxdmpadm getdmpnode enclosure=enc0
Displaying All Paths Controlled by a DMP Node
The following command displays the paths controlled by the specified
DMP node:
# vxdmpadm getsubpaths dmpnodename=c2t1d0s2