VERITAS Volume Manager 3.5 Administrator's Guide (September 2002)

Disabling and Enabling Multipathing for Specific Devices

92 VERITAS Volume Manager Administrator’s Guide

You can specify a controller name at the prompt. A controller name

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

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 disable multipathing for speciﬁed paths.

Exclude paths from DMP

Menu: VolumeManager/Disk/ExcludeDevices/PATH-DMP

Use this operation to exclude one or more disks from DMP.

As a result of this operation, the disks corresponding to the

specified paths will not be multipathed by DMP. This operation can

be reversed using the vxdiskadm command.

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,?]

If a path is speciﬁed, the corresponding disk are claimed in the OTHER_DISKS

category and hence not multipathed.

❖ Select option 7 to disable multipathing for disks that match aspeciﬁed Vendor ID and

Product ID.

Note This option requires a reboot of the system.

Exclude VID:PID from DMP

Menu: VolumeManager/Disk/ExcludeDevices/VIDPID-DMP

Use this operation to prevent vxdmp from multipathing disks

returning a specific VID:PID combination.

As a result of this operation, all disks that return

VendorID:ProductID matching the specified combination will be

claimed in the OTHER DISKS category(i.e. they will not be

multipathed by vxdmp). This operation can be reversed using the

vxdiskadm command.