blob: cc9665522148a730b010953596cc24edefc00ed6 [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +00001config GFS2_FS
Steven Whitehouseb5ea3e12006-04-24 14:14:42 -04002 tristate "GFS2 file system support"
Bartlomiej Zolnierkiewicz90c699a2009-06-19 08:08:50 +02003 depends on EXPERIMENTAL && (64BIT || LBDAF)
Steven Whitehousef057f6c2009-01-12 10:43:39 +00004 select DLM if GFS2_FS_LOCKING_DLM
5 select CONFIGFS_FS if GFS2_FS_LOCKING_DLM
6 select SYSFS if GFS2_FS_LOCKING_DLM
7 select IP_SCTP if DLM_SCTP
Steven Whitehouseb5ea3e12006-04-24 14:14:42 -04008 select FS_POSIX_ACL
Steven Whitehousefa2ecfc5e2006-11-20 10:04:49 -05009 select CRC32
Steven Whitehousecc632e72009-09-15 09:59:02 +010010 select QUOTACTL
Steven Whitehouseb5ea3e12006-04-24 14:14:42 -040011 help
Randy Dunlap9beeb9f2007-01-30 14:30:08 -080012 A cluster filesystem.
David Teiglandb3b94fa2006-01-16 16:50:04 +000013
Randy Dunlap9beeb9f2007-01-30 14:30:08 -080014 Allows a cluster of computers to simultaneously use a block device
15 that is shared between them (with FC, iSCSI, NBD, etc...). GFS reads
16 and writes to the block device like a local filesystem, but also uses
17 a lock module to allow the computers coordinate their I/O so
18 filesystem consistency is maintained. One of the nifty features of
19 GFS is perfect consistency -- changes made to the filesystem on one
20 machine show up immediately on all other machines in the cluster.
David Teiglandb3b94fa2006-01-16 16:50:04 +000021
Steven Whitehouse048bca22008-05-23 14:46:04 +010022 To use the GFS2 filesystem in a cluster, you will need to enable
23 the locking module below. Documentation and utilities for GFS2 can
Randy Dunlap9beeb9f2007-01-30 14:30:08 -080024 be found here: http://sources.redhat.com/cluster
David Teiglandb3b94fa2006-01-16 16:50:04 +000025
Steven Whitehousef057f6c2009-01-12 10:43:39 +000026 The "nolock" lock module is now built in to GFS2 by default. If
27 you want to use the DLM, be sure to enable HOTPLUG and IPv4/6
28 networking.
David Teiglandb3b94fa2006-01-16 16:50:04 +000029
30config GFS2_FS_LOCKING_DLM
Steven Whitehousef057f6c2009-01-12 10:43:39 +000031 bool "GFS2 DLM locking"
32 depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && HOTPLUG
David Teiglandb3b94fa2006-01-16 16:50:04 +000033 help
Randy Dunlap9beeb9f2007-01-30 14:30:08 -080034 Multiple node locking module for GFS2
David Teiglandb3b94fa2006-01-16 16:50:04 +000035
Steven Whitehousef057f6c2009-01-12 10:43:39 +000036 Most users of GFS2 will require this. It provides the locking
Randy Dunlap9beeb9f2007-01-30 14:30:08 -080037 interface between GFS2 and the DLM, which is required to use GFS2
38 in a cluster environment.