o2hbmonitor man page on OpenSuSE
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o2hbmonitor(8) OCFS2 Manual Pages o2hbmonitor(8)
NAME
o2hbmonitor - Monitors disk heartbeat in the O2CB cluster stack
SYNOPSIS
o2hbmonitor [-w percent] [-ivV]
DESCRIPTION
o2hbmonitor is a utility to monitor the disk heartbeat in the o2cb
cluster stack. It tracks the time elapsed since the last heartbeat and
logs messages once it exceeds the warn threshold.
By default, it runs as a daemon and logs messages to the system logger.
It can be started at any time and stopped using kill(1). It does not
affect the functioning of the heartbeat thread. It is typically auto‐
matically started during cluster online and stopped during cluster off‐
line by the o2cb init script.
This utility expects the debugfs file system to be mounted at /sys/ker‐
nel/debug.
OPTIONS
-w percent
Warn threshold percent. It is the percentage of the idle thresh‐
old. It defaults to 50%.
-i Interactive mode. It works as a daemon by default. This mode is
typically only used for debugging.
-v Verbose mode. It logs messages only to the system logger by
default. In this mode it also logs the messages to stdout.
-V Displays version.
NOTES
This utility works with Linux kernel 2.6.37 and later.
SEE ALSO
o2cb(7)
AUTHORS
Oracle Corporation
COPYRIGHT
Copyright © 2010, 2012 Oracle. All rights reserved.
Version 1.8.2 January 2012 o2hbmonitor(8)
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