Testing Disk Heartbeats

To test your disk heartbeats, you can look at the output of “cllsif” or “lssrc -ls topsvcs”, or you can actively test them. IBM provides a command to do this. First, find the devices associated with the disk HB VG, I’ll assume hdisk4 on nodeA and hdisk5 on nodeB.

Run this on nodeA first:

/usr/sbin/rsct/bin/dhb_read -p hdisk4 -r

Then run this on NodeB:

/usr/sbin/rsct/bin/dhb_read -p hdisk5 -t

Both sides should generate some output followed by “Link operating normally”.

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