Man Linux: Main Page and Category List

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, 2009 Oracle. All rights reserved.