Managing HP Serviceguard for Linux, Eighth Edition, March 2008

Troubleshooting Your Cluster
Replacing Disks
Chapter 8304
CAUTION You are responsible for determining that the device is not being used by
LVM or any other subsystem on any node connected to the device before
using cmdisklock. If you use cmdisklock without taking this
precaution, you could lose data.
NOTE cmdisklock is needed only when you are repairing or replacing a lock
LUN; see the cmdisklock (1m) manpage for more information.
Serviceguard checks the lock LUN every 75 seconds. After using the
cmdisklock command, review the syslog file of an active cluster node
for not more than 75 seconds. By this time you should see a message
showing that the lock disk is healthy again.