Using High Availability Monitors (June 2007)

Monitoring Disk Resources
Creating Disk Monitoring Requests
Chapter 252
To configure the EMS alerts, create the following requests:
If pv_summary is SUSPECT, you know a physical device failed. 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.
Resources to Monitor for Mirrored Disks
This section is valid for mirrored disks created with MirrorDisk/UX.
Mirroring is required to be PVG-strict if you are using the HA Disk
Monitor. Mirrored configurations that are not PVG-strict will not give
you a correct pv_summary.
To adequately monitor mirrored disks, create requests for the following
resources for all volume groups on a node:
Table 2-10 Sample Disk Monitoring Requests
Resource
Monitoring Parameters
Notify Condition Option
/vg/vgdance/pv_summar
y
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
Table 2-11 Resources to Monitor for Mirrored Disks
/vg/vgName/
pv_summary
This gives you summary status of all physical
volumes in a volume group. A high availability
system must be configured PVG strict. If not,
pv_summary cannot accurately determine disk
availability.
vg/vgName/pv_
pvlink/status/*
This gives you the status of each physical disk and
each link.