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										 |  |  | config GFS2_FS | 
					
						
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										 |  |  | 	tristate "GFS2 file system support" | 
					
						
							| 
									
										
										
										
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										 |  |  | 	depends on (64BIT || LBDAF) | 
					
						
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										 |  |  | 	select FS_POSIX_ACL | 
					
						
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										 |  |  | 	select CRC32 | 
					
						
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										 |  |  | 	select QUOTACTL | 
					
						
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										 |  |  | 	help | 
					
						
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										 |  |  | 	  A cluster filesystem. | 
					
						
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										 |  |  | 
 | 
					
						
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										 |  |  | 	  Allows a cluster of computers to simultaneously use a block device | 
					
						
							|  |  |  | 	  that is shared between them (with FC, iSCSI, NBD, etc...).  GFS reads | 
					
						
							|  |  |  | 	  and writes to the block device like a local filesystem, but also uses | 
					
						
							|  |  |  | 	  a lock module to allow the computers coordinate their I/O so | 
					
						
							|  |  |  | 	  filesystem consistency is maintained.  One of the nifty features of | 
					
						
							|  |  |  | 	  GFS is perfect consistency -- changes made to the filesystem on one | 
					
						
							|  |  |  | 	  machine show up immediately on all other machines in the cluster. | 
					
						
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										 |  |  | 
 | 
					
						
							| 
									
										
										
										
											2008-05-23 14:46:04 +01:00
										 |  |  | 	  To use the GFS2 filesystem in a cluster, you will need to enable | 
					
						
							|  |  |  | 	  the locking module below. Documentation and utilities for GFS2 can | 
					
						
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										 |  |  | 	  be found here: http://sources.redhat.com/cluster | 
					
						
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										 |  |  | 
 | 
					
						
							| 
									
										
										
										
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										 |  |  | 	  The "nolock" lock module is now built in to GFS2 by default. If | 
					
						
							|  |  |  | 	  you want to use the DLM, be sure to enable HOTPLUG and IPv4/6 | 
					
						
							|  |  |  | 	  networking. | 
					
						
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										 |  |  | 
 | 
					
						
							|  |  |  | config GFS2_FS_LOCKING_DLM | 
					
						
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										 |  |  | 	bool "GFS2 DLM locking" | 
					
						
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										 |  |  | 	depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && \ | 
					
						
							|  |  |  | 		HOTPLUG && DLM && CONFIGFS_FS && SYSFS | 
					
						
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										 |  |  | 	help | 
					
						
							| 
									
										
										
										
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										 |  |  | 	  Multiple node locking module for GFS2 | 
					
						
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										 |  |  | 
 | 
					
						
							| 
									
										
										
										
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										 |  |  | 	  Most users of GFS2 will require this. It provides the locking | 
					
						
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										 |  |  | 	  interface between GFS2 and the DLM, which is required to use GFS2 | 
					
						
							|  |  |  | 	  in a cluster environment. |