To reset the
bootdef_dev
console environment variable, follow these steps:
1.
Obtain the device name and worldwide name for the Fibre Channel unit
from where you will boot cluster member system 1 (see Table 6–2).
2.
Check the reachability display (Example 6–5) provided by the
wwidmgr
-quickset
or the
wwidmgr -reachability
commands for the device
names that can access the storage unit from which you are booting.
Check the
show dev
command output to ensure the device name may
be assigned to the
bootdef_dev
console environment variable.
____________________
Notes
____________________
You should choose device names that show up as both
Yes
and
No
in the reachability display
connected
column. Keep
in mind, that for multiple-bus failover, only one controller is
normally active for a storage unit. You must ensure that the
unit is reachable if the controllers have failed over.
If you have multiple Fibre Channel host bus adapters, you
should use device names for at least two host bus adapters.
For example, to ensure that you have a connected boot path
in case of a failed host bus adapter or controller failover,
choose device names for multiple host bus adapters and each
controller port. For example, if you use the reachability
display shown in Example 6–5, you could choose the following
device names when setting the
bootdef_dev
console
environment variable for the first cluster member system:
dga131.1004.0.1.0
1
dgb131.1002.0.2.0
2
dgb131.1003.0.2.0
3
dga131.1001.0.1.0
4
1
Path from host bus adapter A to controller A port 1
2
Path from host bus adapter B to controller A port 2
3
Path from host bus adapter B to controller B port 1
4
Path from host bus adapter A to controller B port 2
You can set units preferred to a specific controller, in which
case both controllers will be active.
3.
Set the
bootdef_dev
console environment variable for member system
1 boot disk to a comma-separated list of several of the boot path(s) that
show up as connected in the reachability display (
wwidmgr -quickset
6–54 Using Fibre Channel Storage
