blob: eb08c9e43c2afb13947ca557f1a62da4626c5071 [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"
Steven Whitehouse820969f2010-08-11 09:53:47 +01003 depends on (64BIT || LBDAF)
Steven Whitehouseb5ea3e12006-04-24 14:14:42 -04004 select FS_POSIX_ACL
Steven Whitehousefa2ecfc5e2006-11-20 10:04:49 -05005 select CRC32
Steven Whitehousecc632e72009-09-15 09:59:02 +01006 select QUOTACTL
Steven Whitehouseb5ea3e12006-04-24 14:14:42 -04007 help
Randy Dunlap9beeb9f2007-01-30 14:30:08 -08008 A cluster filesystem.
David Teiglandb3b94fa2006-01-16 16:50:04 +00009
Randy Dunlap9beeb9f2007-01-30 14:30:08 -080010 Allows a cluster of computers to simultaneously use a block device
11 that is shared between them (with FC, iSCSI, NBD, etc...). GFS reads
12 and writes to the block device like a local filesystem, but also uses
13 a lock module to allow the computers coordinate their I/O so
14 filesystem consistency is maintained. One of the nifty features of
15 GFS is perfect consistency -- changes made to the filesystem on one
16 machine show up immediately on all other machines in the cluster.
David Teiglandb3b94fa2006-01-16 16:50:04 +000017
Steven Whitehouse048bca22008-05-23 14:46:04 +010018 To use the GFS2 filesystem in a cluster, you will need to enable
19 the locking module below. Documentation and utilities for GFS2 can
Randy Dunlap9beeb9f2007-01-30 14:30:08 -080020 be found here: http://sources.redhat.com/cluster
David Teiglandb3b94fa2006-01-16 16:50:04 +000021
Steven Whitehousef057f6c2009-01-12 10:43:39 +000022 The "nolock" lock module is now built in to GFS2 by default. If
23 you want to use the DLM, be sure to enable HOTPLUG and IPv4/6
24 networking.
David Teiglandb3b94fa2006-01-16 16:50:04 +000025
26config GFS2_FS_LOCKING_DLM
Steven Whitehousef057f6c2009-01-12 10:43:39 +000027 bool "GFS2 DLM locking"
Benjamin Poirier97cc0082012-03-23 18:06:18 -040028 depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && \
29 HOTPLUG && DLM && CONFIGFS_FS && SYSFS
David Teiglandb3b94fa2006-01-16 16:50:04 +000030 help
Randy Dunlap9beeb9f2007-01-30 14:30:08 -080031 Multiple node locking module for GFS2
David Teiglandb3b94fa2006-01-16 16:50:04 +000032
Steven Whitehousef057f6c2009-01-12 10:43:39 +000033 Most users of GFS2 will require this. It provides the locking
Randy Dunlap9beeb9f2007-01-30 14:30:08 -080034 interface between GFS2 and the DLM, which is required to use GFS2
35 in a cluster environment.