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Chapter 1: HP Clustered File System Commands 19

You can use the following command to control whether this failover

behavior can occur on a particular node. Run the command on the server

where you want to change the failover behavior.

# mxmpio enableall|disableall

HP Clustered File System starts with failover enabled.

Enable or Disable Failover for a PSD Device

When a failure occurs in the I/O path to a particular PSD device, HP

Clustered File System will by default fail over to another I/O path. You

can use the following command to control whether this failover behavior

can occur for specific PSD devices. HP Clustered File System starts with

failover enabled.

# mxmpio enable|disable [<PSD-device ...>]

Specify the Path for I/O

If you are troubleshooting problems with an I/O path, you may want to

direct the I/O to another I/O path. You might also want to manually

balance I/O paths on a per-server basis across the cluster. This is possible

because mxmpio's controls are server specific.

You can use the following command to specify either a particular HBA or

a PSD device. HP Clustered File System will then fail over the I/O to the

path that includes the specified device. In the command, PSD-device is

specified by the base name of the device path, such as psd2p1 (not

/dev/psd/psd2p1).

# mxmpio active <target> <PSD-device>

target can be one of the following values:

I A numerical index on the PSD device target array (0..).

M,m A decimal major/minor number identifying the host

adapter.

M:m A hexadecimal major/minor number identifying the host

adapter.

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Seagate ST336704FC Guia de preparacion Pagina 25