1config GFS2_FS 2 tristate "GFS2 file system support" 3 depends on EXPERIMENTAL 4 select FS_POSIX_ACL 5 select CRC32 6 help 7 A cluster filesystem. 8 9 Allows a cluster of computers to simultaneously use a block device 10 that is shared between them (with FC, iSCSI, NBD, etc...). GFS reads 11 and writes to the block device like a local filesystem, but also uses 12 a lock module to allow the computers coordinate their I/O so 13 filesystem consistency is maintained. One of the nifty features of 14 GFS is perfect consistency -- changes made to the filesystem on one 15 machine show up immediately on all other machines in the cluster. 16 17 To use the GFS2 filesystem, you will need to enable one or more of 18 the below locking modules. Documentation and utilities for GFS2 can 19 be found here: http://sources.redhat.com/cluster 20 21config GFS2_FS_LOCKING_NOLOCK 22 tristate "GFS2 \"nolock\" locking module" 23 depends on GFS2_FS 24 help 25 Single node locking module for GFS2. 26 27 Use this module if you want to use GFS2 on a single node without 28 its clustering features. You can still take advantage of the 29 large file support, and upgrade to running a full cluster later on 30 if required. 31 32 If you will only be using GFS2 in cluster mode, you do not need this 33 module. 34 35config GFS2_FS_LOCKING_DLM 36 tristate "GFS2 DLM locking module" 37 depends on GFS2_FS && NET && INET && (IPV6 || IPV6=n) 38 select IP_SCTP if DLM_SCTP 39 select CONFIGFS_FS 40 select DLM 41 select SYSFS 42 help 43 Multiple node locking module for GFS2 44 45 Most users of GFS2 will require this module. It provides the locking 46 interface between GFS2 and the DLM, which is required to use GFS2 47 in a cluster environment. 48 49