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)
Check Out this Related Man Page
GROUP_TOOL(8) cluster GROUP_TOOL(8)NAME
group_tool - run common fence_tool, dlm_tool, gfs_control commands
SYNOPSIS
group_tool [COMMAND] [OPTIONS]
DESCRIPTION
This utility is deprecated and the new replacements are shown. See fence_tool(8), dlm_tool(8), gfs_control(8) man pages for more informa-
tion about the new commands.
ls runs fence_tool ls ; dlm_tool ls ; gfs_control ls
dump fence
equivalent to new fence_tool dump
dump dlm
equivalent to new dlm_tool dump
dump gfs
equivalent to new gfs_control dump
dump plocks name
equivalent to new dlm_tool plocks name
Cluster Uprading
When performing a rolling upgrade from cluster2 to cluster3, the groupd(8) daemon will be running and group_tool can be used with groupd
like it was in cluster2.
ls -g1 queries and displays the internal groupd state.
dump queries and dumps the groupd debug buffer.
compat queries and displays the internal groupd compatibility mode.
OPTIONS -g num Force old groupd queries with 1.
-n Show all node information in ls.
-v Show verbose information from groupd with ls -g1.
-h Print a help message describing available options, then exit.
-V Print program version information, then exit.
SEE ALSO cman(5), groupd(8), fence_tool(8), dlm_tool(8), gfs_control(8)cluster 2009-01-19 GROUP_TOOL(8)
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