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

Chapter 3, Administering Dynamic Multipathing (DMP)

Disabling and Enabling Multipathing for Specific Devices

You can specify a VendorID:ProductID 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.

If a ’*’ follows VID, it will result in the exclusion of all disks

returning Vendor ID starting with the specified VID. The same is

true for Product ID as well. Both VID and PID should be non NULL.

The maximum allowed lengths for Vendor ID and Product ID are 8 and

16 characters respectively.

Some examples of VID:PID specification are:

all - Exclude all disks

aaa:123 - Exclude all disks having VID ‘aaa’ and PID ‘123’

aaa*:123 - Exclude all disks having VID starting with ‘aaa’

and PID ‘123’

aaa:123* - Exclude all disks having VID ‘aaa’ and PID starting

with ‘123’

aaa:* - Exclude all disks having VID ‘aaa’ and any PID

Enter a VID:PID combination:[<pattern>,all,list,list-exclude,q,?]

All disks returning the speciﬁed Vendor ID and Product ID combination are claimed

in OTHER_DISKS category and so are not multipathed.

Enabling Multipathing and Making Devices Visible to VxVM

Note Some of the operations described in this section require a reboot of the system.

Select menu item 18 (Allow multipathing/Unsuppress devices from VxVM’s

view)fromthevxdiskadm main menuto re-enablemultipathing for adevice, ortomake

a device visible to VxVM again.

1. At the following prompt, conﬁrm that you want to continue:

Include Devices

Menu: VolumeManager/Disk/IncludeDevices