Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

To enable multi-pathing and make devices visible to VxVM
1
Run the vxdiskadm command, and select Allow multipathing/Unsuppress
devices from VxVM’s view from the main menu. You are prompted to
confirm whether you want to continue.
2
Select the operation you want to perform from the following options:
Unsuppresses all paths through the specified controller from
the view of VxVM.
Option 1
Unsuppresses specified paths from the view of VxVM.Option 2
Unsuppresses disks from the view of VxVM that match a specified
Vendor ID and Product ID combination.
Option 3
Removes a pathgroup definition. (A pathgroup explicitly defines
alternate paths to the same disk.) Once a pathgroup has been
removed, all paths that were defined in that pathgroup become
visible again.
Option 4
Allows multi-pathing of all disks that have paths through the
specified controller.
Option 5
Allows multi-pathing of a disk by VxVM.Option 6
Allows multi-pathing of disks that match a specified Vendor ID
and Product ID combination.
Option 7
Lists the devices that are currently suppressed or not
multipathed.
Option 8
About enabling and disabling I/O for controllers and
storage processors
DMP allows you to turn off I/O for a controller or the array port of a storage
processor so that you can perform administrative operations. This feature can be
used for maintenance of HBA controllers on the host, or array ports that are
attached to disk arrays supported by VxVM. I/O operations to the controller or
array port can be turned back on after the maintenance task is completed. You
can accomplish these operations using the vxdmpadm command.
For Active/Active type disk arrays, after disabling the I/O through an HBA
controller or array port, the I/O continues on the remaining paths. For
Active/Passive type disk arrays, if disabling I/O through an HBA controller or
Administering Dynamic Multi-Pathing
About enabling and disabling I/O for controllers and storage processors
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