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ocfs2_hb_ctl(8) OCFS2 Manual Pages ocfs2_hb_ctl(8)
NAME
ocfs2_hb_ctl - Starts and stops the OCFS2 heartbeat on a given device.
SYNOPSIS
ocfs2_hb_ctl -S -d device service
ocfs2_hb_ctl -S -u uuid service
ocfs2_hb_ctl -K -d device service
ocfs2_hb_ctl -K -u uuid service
ocfs2_hb_ctl -I -d device
ocfs2_hb_ctl -I -u uuid
ocfs2_hb_ctl -P -d device [-n io_priority]
ocfs2_hb_ctl -P -u uuid [-n io_priority]
ocfs2_hb_ctl -h
DESCRIPTION
ocfs2_hb_ctl starts and stops the heartbeat on a OCFS2 device. Users
are strongly urged not to use this tool directly. It is automatically
invoked by mount.ocfs2 and other tools that require heartbeat notifica‐
tions.
The tools accepts devices to be specified by its name or its uuid. Ser‐
vice denotes the application that is requesting the heartbeat notifica‐
tion.
OPTIONS
-S Starts the heartbeat.
-K Stops the heartbeat.
-I Prints the heartbeat reference counts for that heartbeat region.
-d Specify region by device name.
-u Specify region by device uuid.
-n Adjust IO priority for the heartbeat thread. This option calls
the ionice tool to set its IO scheduling class to realtime with
scheduling class data as provided. This option is usable only
with the O2CB cluster stack.
-h Displays help and exit.
SEE ALSO
mkfs.ocfs2(8) fsck.ocfs2(8) tunefs.ocfs2(8) mounted.ocfs2(8) ocfs2con‐
sole(8) debugfs.ocfs2(8)
AUTHORS
Oracle Corporation
COPYRIGHT
Copyright © 2004, 2010 Oracle. All rights reserved.
Version 1.8.0 September 2010 ocfs2_hb_ctl(8)
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