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46 IBM Certification Study Guide AIX HACMP
2.6.2.1 Single Point-of-Failure Hardware Component Recovery
As described in 2.2.1.2, “Special Network Considerations” on page 12, the
HPS Switch network is one resource that has to be considered as a single
point of failure. Since a node can support only one switch adapter, its failure
will disable the switch network for this node. It is strongly recommended to
promote a failure like this into a node failure, if the switch network is critical to
your operations.
Critical failures of the switch adapter would cause an entry in the AIX error
log. Error labels like
HPS_FAULT9_ER or HPS_FAULT3_ER are considered critical,
and can be specified to AIX Error Notification in order to be able to act upon
them.
With HACMP, there is a SMIT screen to make it easier to set up an error
notification object. This is much easier than the traditional AIX way of adding
a template file to the ODM class. Under
smit hacmp > RAS Support > Error
Notification > Add a Notify Method,
you will find the menu allowing you to
add these objects to the ODM. An example of the SMIT panel is shown
below:
Figure 8. Sample Screen for Add a Notification Method
Add a Notify Method
Type or select values in entry fields.
Press Enter AFTER making all desired changes.
[Entry Fields]
* Notification Object Name [HPS_ER9]
* Persist across system restart? Yes +
Process ID for use by Notify Method [] +#
Select Error Class All +
Select Error Type PERM +
Match Alertable errors? All +
Select Error Label [HPS_FAULT9_ER] +
Resource Name [All] +
Resource Class [All] +
Resource Type [All] +
* Notify Method [/usr/sbin/cluster/utilities/clstop -grsy]
F1=Help F2=Refresh F3=Cancel F4=List
F5=Reset F6=Command F7=Edit F8=Image
F9=Shell F10=Exit Enter=Do