Using EMS HA Monitors

52 Chapter 2
Monitoring Disk Resources
Creating Disk Monitoring Requests
Each LUN on the RAID array is in it own volume group: vgdance and vgsing.
Assume this is one node in a 2-node cluster and you want to be notified when there
is a failover, when any physical device fails, and when any logical volume becomes
unavailable.
To be notified when a package fails over, you must configure an EMS request that is
the same as the package dependency you configured in MC/ServiceGuard. See
Chapter 1, “Configuring MC/ServiceGuard Package Dependencies”. For this
example, assume the package UP values were set as “UP” and “PVG_UP”.
To configure the EMS alerts, create the following requests:
Table 2-8 Sample Disk Monitoring Requests
If pv_summary is SUSPECT, you know a physical device fails. If pv_summary
status is SUSPECT, you may want to look at your lv_summary to see if you can still
access all data. If lv_summary is DOWN or INACTIVE_DOWN, you do not have a
complete copy of data.
Resource
Monitoring Parameters
Notify Condition Option
/vg/vgdance/pv_summary when value is... > PVG_UP RETURN
/vg/vgsing/pv_summary when value is... > PVG_UP RETURN
/vg/dance/lv_summary when value is... >= INACTIVE RETURN
/vg/vgsing/lv_summary when value is... >= INACTIVE RETURN