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GROUPD(8)			    cluster			     GROUPD(8)

NAME
       groupd - compatibility daemon for fenced, dlm_controld and gfs_controld

SYNOPSIS
       groupd [OPTIONS]

DESCRIPTION
       The groupd daemon and libgroup library are used by the fenced, dlm_con‐
       trold and gfs_controld daemons when they are operating in cluster2-com‐
       patible	mode  to  perform  a  rolling cluster upgrade from cluster2 to
       cluster3.

       See cman(5) for more information on the upgrading configuration	option
       needed to perform a rolling upgrade.

       When  the  upgrading  option is enabled, cman adds the following to the
       online configuration:

	    <group groupd_compat="1"/>

       This setting causes the cman init script to start  the  groupd  daemon,
       and causes the groupd, fenced, dlm_controld and gfs_controld daemons to
       operate in the old cluster2 mode so they will be compatible with	 clus‐
       ter2 nodes in the cluster that have not yet been upgraded.

       The  upgrading  setting, including the groupd_compat setting, cannot be
       changed in a running cluster.  The entire cluster must be taken offline
       to change these because the new cluster3 default modes are not compati‐
       ble with the old cluster2 modes.	 The upgrading/compat  settings	 cause
       the new cluster3 daemons to run the old cluster2 code and protocols.

OPTIONS
       Command line options override a corresponding setting in cluster.conf.

       -D     Enable debugging to stderr and don't fork.

       -L     Enable debugging to log file.

       -g num groupd compatibility mode, 0 off, 1 on. Default 0.

       -h     Print a help message describing available options, then exit.

       -V     Print program version information, then exit.

SEE ALSO
       cman(5), fenced(8), dlm_controld(8), gfs_controld(8)

cluster				  2009-01-19			     GROUPD(8)

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