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

Chapter 3, Administering Dynamic Multipathing (DMP)

Disabling and Enabling Multipathing for Specific Devices

❖ 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 paths will be multipathed by vxdmp again.

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 VendorID:ProductID combination again.

As a result of this operation, all disks that return VID:PID

matching the specified combination will be multipathed by vxdmp

again.

You can specify a VID:PID combination at the prompt. The

specification can be as follows:

VID:PID where VID stands for Vendor ID

PID stands for Product ID

(The command vxdmpinq in /etc/vx/diag.d can be used to obtain the

Vendor ID and Product ID)

Both VID and PID can have an optional ’*’ (asterisk) following

them.