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Chapter 11. Using GNBD
Node Deployment
GFS dedicated
GFS with lock server
GNBD server dedicated
GNBD server with lock server
Lock server dedicated
Table 11-1. CCS File Location for GNBD Multipath Cluster
Before a GNBD client node can activate (using the
pool, it must activate the GNBD-exported CCS pool and start
example shows activating an GNBD-exported CCS pool labeled as
# pool_assemble CCS
11.2.4. Fencing GNBD Server Nodes
GNBD server nodes must be fenced using a fencing method that physically removes the nodes from
the network. To physically remove a GNBD server node, you can use any of the following fencing
devices: APC MasterSwitch (
Brocade FC switch (
agent), Vixel FC switch (
xCAT (
fence_xcat
agent) to fence a GNBD server node. For information about configuring fencing for GNBD server
nodes, refer to Chapter 6 Creating the Cluster Configuration System Files.
11.3. Running GFS on a GNBD Server Node
You can run GFS on a GNBD server node, with some restrictions. In addition, running GFS on a
GNBD server node reduces performance. The following restrictions apply when running GFS on a
GNBD server node.
Important
When running GFS on a GNBD server node you must follow the restrictions listed; otherwise, the
GNBD server node will fail.
Note
You may need to increase the timeout period on the exported GNBDs to accommodate reduced
performance. The need to increase the timeout period depends on the quality of the hardware.
CCS File Location
GNBD, local, or FC-attached storage
Local or FC-attached storage only
Local or FC-attached storage only
Local or FC-attached storage only
Local or FC-attached storage only
fence_apc
fence agent), McData FC switch (
fence_brocade
fence_vixel
fence agent). You cannot use the GNBD fencing device (
pool_assemble
ccsd
fence agent), WTI NPS (
fence agent), HP RILOE (
command) a GNBD-multipath
and
. The following
lock_gulmd
:
CCS
fence agent),
fence_wti
fence_mcdata
fence agent), or
fence_rib
fence_gnbd
125
fence
fence
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