1ocfs2_hb_ctl(8) OCFS2 Manual Pages ocfs2_hb_ctl(8)
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6 ocfs2_hb_ctl - Starts and stops the O2CB local heartbeat on a given
7 device.
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10 ocfs2_hb_ctl -S -d device service
11 ocfs2_hb_ctl -S -u uuid service
12 ocfs2_hb_ctl -K -d device service
13 ocfs2_hb_ctl -K -u uuid service
14 ocfs2_hb_ctl -I -d device
15 ocfs2_hb_ctl -I -u uuid
16 ocfs2_hb_ctl -P -d device [-n io_priority]
17 ocfs2_hb_ctl -P -u uuid [-n io_priority]
18 ocfs2_hb_ctl -h
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22 ocfs2_hb_ctl starts and stops local heartbeat on a OCFS2 device. Users
23 are strongly urged not to use this tool directly. It is automatically
24 invoked by mount.ocfs2(8) and other tools that require heartbeat noti‐
25 fications.
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27 This utility only operates in the local heartbeat mode. It fails
28 silently when run in global heartbeat mode. More information on the
29 heartbeat modes can be found in o2cb(7).
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31 The tools accepts devices to be specified by its name or its uuid. Ser‐
32 vice denotes the application that is requesting the heartbeat notifica‐
33 tion.
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37 -S Starts the heartbeat.
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40 -K Stops the heartbeat.
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43 -I Prints the heartbeat reference counts for that heartbeat region.
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46 -d Specify region by device name.
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49 -u Specify region by device uuid.
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52 -n Adjust IO priority for the heartbeat thread. This option calls
53 the ionice tool to set its IO scheduling class to realtime with
54 scheduling class data as provided. This option is usable only
55 with the O2CB cluster stack.
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58 -h Displays help and exit.
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62 mount.ocfs2(8) o2cb(7) o2cb(8) o2cb.sysconfig(5) ocfs2.cluster.conf(5)
63 o2cluster(8)
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67 Oracle Corporation
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71 Copyright © 2004, 2012 Oracle. All rights reserved.
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75Version 1.8.6 January 2012 ocfs2_hb_ctl(8)