Chapter 1. Red Hat GFS Overview
7
1.4. GFS Software Subsystems
GFS consists of the following subsystems:
•
Cluster Configuration System (CCS)
•
Fence
•
Pool
•
LOCK_GULM
•
LOCK_NOLOCK
Table 1-1 summarizes the GFS Software subsystems and their components.
Software Subsystem Components
Description
Cluster Configuration
System (CCS)
ccs_tool
Command used to create CCS archives.
ccs_read
Diagnostic and testing command that is
used to retrieve information from
configuration files through
ccsd
.
ccsd
CCS daemon that runs on all cluster nodes
and provides configuration file data to
cluster software.
ccs_servd
CCS server daemon that distributes CCS
data from a single server to ccsd daemons
when a shared device is not used for storing
CCS data.
Fence
fence_node
Command used by
lock_gulmd
when a
fence operation is required. This command
takes the name of a node and fences it
based on the node’s fencing configuration.
fence_apc
Fence agent for APC power switch.
fence_wti
Fence agent for WTI power switch.
fence_brocade
Fence agent for Brocade Fibre Channel
switch.
fence_mcdata
Fence agent for McData Fibre Channel
switch.
fence_vixel
Fence agent for Vixel Fibre Channel switch.
fence_rib
Fence agent for RIB card.
fence_gnbd
Fence agent used with GNBD storage.
fence_egenera
Fence agent used with Egenera BladeFrame
system.
fence_xcat
Fence agent used with xCAT-managed
cluster.
Содержание GFS 6.0 -
Страница 1: ...Red Hat GFS 6 0 Administrator s Guide...
Страница 8: ......
Страница 88: ...74 Chapter 6 Creating the Cluster Configuration System Files...
Страница 98: ...84 Chapter 7 Using the Cluster Configuration System...
Страница 102: ...88 Chapter 8 Using Clustering and Locking Systems...
Страница 128: ...114 Chapter 9 Managing GFS...
Страница 134: ...120 Chapter 10 Using the Fencing System...
Страница 144: ...130 Chapter 12 Using GFS init d Scripts...
Страница 148: ...134 Appendix A Using Red Hat GFS with Red Hat Cluster Suite...
Страница 184: ...170 Appendix C Basic GFS Examples...
Страница 190: ......