ocfs2_hb_ctl - Starts and stops the O2CB local
heartbeat on a
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
ocfs2_hb_ctl -P -u uuid
starts and stops local
heartbeat on a OCFS2
device. Users are strongly urged not to use this tool directly
. It is
automatically invoked by mount.ocfs2(8)
and other tools that require
This utility only operates in the local
heartbeat mode. It fails silently
when run in global
heartbeat mode. More information on the heartbeat
modes can be found in o2cb(7)
The tools accepts devices to be specified by its name or its uuid. Service
denotes the application that is requesting the heartbeat notification.
- Starts the heartbeat.
- Stops the heartbeat.
- Prints the heartbeat reference counts for that heartbeat
- Specify region by device name.
- Specify region by device uuid.
- 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.
mount.ocfs2(8) o2cb(7) o2cb(8) o2cb.sysconfig(5)
- Displays help and exit.
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