High Availability FailOver/iX Manual (32650-90911)

Configuration

DOHA

The HAFO configurations may be activated on-line.

NOTE

In most cases, HAFO configurations can be activated on-line, with the

DOHA

command. The exception to this is when one has issued a

DELCONF

command.

Deletes of Ldevs that have been previously activated, cannot be de-activated on-

line, and a reboot is necessary.

The following sequence is mandatory for on-line activation:

do any ADDCONF commands needed

ha> exit

io> hold

io> exit

sysgen> keep

sysgen> io

io> ha

ha> doha

The point is that you must do a "hold" and "keep" after the

ADDCONF

commands,

and then return to the ha> section and execute the DOHA

command. This is

because

ADDCONF

adds records to the temporary HAFOCONF file, and then the

permanent file is used to do the activation.

Using

ADDCONF

, you supply the Ldev number, Ldev (primary) path, and alternate

device adapter manager (DAM) path. The DOHA

command will then perform the

following functions:

• Read each entry in the permanent HAFOCONF file

• Confirm the existence of the Ldev, primary, and alternate paths

• Verifies the paths by reading Ldev volume labels on both paths

The syntax is:

ha> doha

This command validates all configured Ldevs (even if they've already been

validated). In the example, two Ldevs, Ldev 50 and 51, have been added, then a

"hold" and "keep" were done.

DOHA

is performed: