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 notifications.
The tools accepts devices to be specified by its name or its uuid. Service
denotes the application that is requesting the heartbeat notification.
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) ocfs2console(8) debugfs.ocfs2(8)
AUTHORS¶
Oracle Corporation
COPYRIGHT¶
Copyright © 2004, 2010 Oracle. All rights reserved.