Managing Serviceguard Eighteenth Edition, September 2010

Lock LUN Daemon: cmdisklockd
If a lock LUN is being used, cmdisklockd runs on each node in the cluster and is
started by cmcld when the node joins the cluster.
Utility Daemon: cmlockd
Runs on every node on which cmcld is running (though currently not actually used
by Serviceguard on HP-UX systems).
Cluster WBEM Agent Daemon: cmwbemd
This daemon collaborates with the Serviceguard WBEM provider plug-in module
(SGProviders) and WBEM services cimserver to provide notification (WBEM
Indications) of Serviceguard cluster events to Serviceguard WBEM Indication
subscribers that have registered a subscription with the cimserver. For example, an
Indication is sent when the cluster configuration changes, or when a Serviceguard
package has failed.
You must edit /etc/rc.config.d/cmwbemagt to auto-start cmwbemd. Configure
cmwbemd to start before the Serviceguard cluster comes up. You can start and stop
cmwbemd with the commands /sbin/init.d/cmwbemagt start and
/sbin/init.d/cmwbemagt stop.
Proxy Daemon: cmproxyd
This daemon is used to proxy or cache Serviceguard configuration data for use by
certain Serviceguard commands running on the local node. This allows these commands
to get the data quicker and removes the burden of responding to certain requests from
cmcld.
CFS Components
The HP Serviceguard Storage Management Suite offers additional components for
interfacing with the Veritas Cluster File System on some current versions of HP-UX
(see “About Veritas CFS and CVM from Symantec” (page 32)). Documents for the
management suite are posted on www.hp.com/go/hpux-serviceguard-docs.
Veritas CFS components operate directly over Ethernet networks that connect the nodes
within a cluster. Redundant networks are required to avoid single points of failure.
The Veritas CFS components are:
• GAB (Group Membership Services/Atomic Broadcast) — When Veritas Cluster
Volume Manager (CVM) 4.1 or later, or Veritas Cluster File System (CFS), is
58 Understanding Serviceguard Software Components