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_controld and gfs_controld daemons when they are operating in clus-
       ter2-compatible 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 cluster2 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 off-
       line to change these because the new cluster3 default modes are not compatible 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)