Red Hat GFS 6.0 -, Administrator'S Manual

Page: 163 / 192

Appendix C. Basic GFS Examples 149
C.3.1. Key Characteristics
This example configuration has the following key characteristics:
•
Fencing device — An APC MasterSwitch (single-switch configuration). Refer to Table C-8 for
switch information.
•
Number of GFS nodes — 3. Refer to Table C-9 for node information.
•
Number of lock server nodes — 1. The lock server is run on one of the GFS nodes (embedded).
Refer to Table C-9 for node information.
•
Locking protocol — LOCK_GULM. The LOCK_GULM server is run on the node that is desig-
nated as a lock server node.
•
Number of shared storage devices — 2. Refer to Table C-10 for storage device information.
•
Number of file systems — 2.
•
File system names —
gfs01
and
gfs02
.
•
File system mounting — Each GFS node mounts the two file systems.
•
Cluster name —
alpha
.
Host Name IP Address Login Name Password
apc 10.0.1.10 apc apc
Table C-8. APC MasterSwitch Information
Host Name IP Address APC Port Number
n01 10.0.1.1 1
n02 10.0.1.2 2
n03 10.0.1.3 3
Table C-9. GFS and Lock Server Node Information
Major Minor #Blocks Name
8 16 8388608 sda
8 17 8001 sda1
8 18 8377897 sda2
8 32 8388608 sdb
8 33 8388608 sdb1
Table C-10. Storage Device Information
Notes
For shared storage devices to be visible to the nodes, it may be necessary to load an appropriate
device driver. If the shared storage devices are not visible on each node, confirm that the device