VERITAS Volume Manager 4.1 Administrator's Guide

Administering Dynamic Multipathing (DMP)

Disabling and Enabling Multipathing for Speciﬁc Devices

Chapter 3126

Re-include controllers in DMP

Menu: VolumeManager/Disk/IncludeDevices/CTLR-DMP

Use this operation to make vxdmp multipath all disks on a controller again.

As a result of this operation, all disks having a path through the specified

controller will be multipathed by vxdmp again.

VxVM INFO V-5-2-1264 You can specify a controller name at the prompt. A cont

roller name is of the form c#, example c3, c11 etc. Enter ’all’ to exclude a

ll paths on all the controllers on the host. To see the list of controllers

on the system, type ’list’.

Enter a controller name:[<ctlr-name>,all,list,list-exclude,q,?]

• Select option 6 to enable multipathing for speciﬁed paths.

NOTE This option requires a reboot of the system.

Re-include paths in DMP

Menu: VolumeManager/Disk/IncludeDevices/PATH-DMP

Use this operation to make vxdmp multipath one or more disks again.

As a result of this operation, all disks corresponding to the specified path

s will be multipathed by vxdmp again.

VxVM INFO V-5-2-1265 You can specify a pathname or a pattern at the prompt.

Here are some path selection examples:

all: all paths

c3t4d2: a single path

list: list all paths on the system

Enter a pathname or pattern :[<pattern>,all,list,list-exclude,q,?]

• Select option 7 to enable multipathing for disks that match a speciﬁed Vendor

ID and Product ID.

NOTE This option requires a reboot of the system.

Make VID:PID visible to DMP

Menu: VolumeManager/Disk/IncludeDevices/VIDPID-DMP

Use this operation to make vxdmp multipath disks returning a specified Vendo

rID:ProductID combination again.