HP HA s Software manual Resources to Monitor for Lock Disks

		Monitoring Disk Resources
		Creating Disk Monitoring Requests
Table 2-9		Example for Interpreting the pv_summary for Mirrored Disks
	number of		pv_summary
	valid	meaning
			value
	devices
	10	all PVs and data accessible	UP
	9	1 PV down, all data accessible	PVG_UP
	8-5	if 5 PVs are from the same PVG, then all data is available	PVG_UP
		if 2 or more physical volumes from different PVGs are DOWN,	SUSPECT
		the disk monitor cannot conclude that all data is available
	4-1	some data missing
			DOWN
	0	no data available

Resources to Monitor for Lock Disks

Lock disks are used as a tie-breaker in a forming or reforming cluster, so if you are using a lock disk with your cluster, you should request a monitor for that disk and send an alert to your system management software if the lock disk is unavailable. If the lock disk is unavailable during cluster formation, the cluster may fail to reform. Requests to monitor the lock disk might look like this:

Resource

Monitoring Parameters

Notify Condition Option

/vg/vg02/pv_pvlink/c0t0d1

when value is

>=

BUSY

RETURN

The Repeat value in the Options will send an alert until the lock disk is available.

You need to create a request on each node in the cluster. Because the bus name and SCSI path to the lock disk may be different on each node, the resource instance may have a different name. It is merely a different path to the same lock disk.

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