VERITAS Volume Manager 4.1 Administrator's Guide

Administering Dynamic Multipathing (DMP)
Displaying Multipaths to a VM Disk
Chapter 3130
Displaying Multipaths to a VM Disk
The vxdisk command is used to display the multipathing information for a particular
metadevice. The metadevice is a device representation of a particular physical disk having
multiple physical paths from the I/O controller of the system. In VxVM, all the physical disks
in the system are represented as metadevices with one or more physical paths.
You can use the vxdisk path command to display the relationships between the device paths,
disk access names, disk media names and disk groups on a system as shown here:
# vxdisk path
SUBPATH DANAME DMNAME GROUP STATE
c1t0d0 c1t0d0 mydg01 mydg ENABLED
c4t0d0 c1t0d0 mydg01 mydg ENABLED
c1t1d0 c1t1d0 mydg02 mydg ENABLED
c4t1d0 c1t1d0 mydg02 mydg ENABLED
.
.
.
This shows that two paths exist to each of the two disks, mydg01 and mydg02, and also
indicates that each disk is in the ENABLED state.
To view multipathing information for a particular metadevice, use the following command:
# vxdisk list devicename
For example, to view multipathing information for c1t0d3, use the following command:
# vxdisk list c1t0d3
Typical output is as follows:
Device: c1t0d3
devicetag: c1t0d3
type: simple
hostid: zort
disk: name=disk04 id=962923652.362193.zort
timeout: 30
group: name=rootdg id=962212937.1025.zort
info: privoffset=128
flags: online ready private autoconfig autoimport imported
pubpaths: block=/dev/vx/dmp/c1t0d3
version: 2.1