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