Rebooting With A Failed Primary Path For Ldev 1 - HP e3000 MPE/iX Manual

Mpe/ix computer systems
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Special Considerations

Rebooting With a Failed Primary Path for Ldev 1

Ldev 1 can be configured for HAFO just as any other Ldev. It is, however, a
very special situation when the system needs to be rebooted while the primary
path for Ldev 1 is broken.
The user will need to make adjustments at the system primary boot interface.
before booting the system. If the primary path for Ldev 1 is broken, the system
primary path needs to be adjusted to be alternate path for Ldev 1. The "System
Startup, Configuration, and Shutdown Reference Manual" has procedures for
most MPE/iX systems..
The following example illustrates how to handle Ldev 1.
Suppose that HASTAT shows the following on your system:
:HASTAT
High Availability Failover Device Status
Ldev
Primary Path
===== ==================== ================== =============== ===============
1 8.0.0
90 15.0.1
100 15.0.2
110 15.0.3
120 15.0.4
Now suppose that there is a hardware failure on path 8. The system would
continue to function, and HASTAT would show something like:
:HASTAT
High Availability Failover Device Status
Ldev
Primary Path
===== ==================== ================== =============== ===============
1 8.0.0
90 15.0.1
100 15.0.2
110 15.0.3
120 15.0.4
If for some reason the system must be rebooted before path 8 can be repaired,
special action must be taken before entering the start command.
Each MPE system has what is known as the system primary path, which has
nothing to do with the primary path concept in HAFO. Ldev 1 is always on the
system primary path. Since, in this example, the system primary path is broken,
Ldev1 will not be found and the system will not boot.
46
Alternate Path
15
8
8
8
8
Alternate Path
15
8
8
8
8
Pri. Status
Ready
Ready
Ready
Ready
Ready
Pri. Status
Alt. Status
Array Failure
Ready
Ready
Ready
Ready
Alt. Status
Validated
Validated
Validated
Validated
Validated
Ready
Validated
Validated
Validated
Validated

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