2 tristate "GFS2 file system support"
4 depends on EXPERIMENTAL
10 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.
18 To use the GFS2 filesystem, you will need to enable one or more of
19 the below locking modules. Documentation and utilities for GFS2 can
20 be found here: http://sources.redhat.com/cluster/gfs/
22 config GFS2_FS_LOCKING_NOLOCK
23 tristate "GFS2 \"nolock\" locking module"
26 Single node locking module for GFS2.
28 Use this module if you want to use GFS2 on a single node without
29 its clustering features. You can still take advantage of the
30 large file support, and upgrade to running a full cluster later on
33 If you will only be using GFS2 in cluster mode, you do not need this
36 config GFS2_FS_LOCKING_DLM
37 tristate "GFS2 DLM locking module"
41 Multiple node locking module for GFS2
43 Most users of GFS2 will require this module. It provides the locking
44 interface between GFS2 and the DLM, which is required to use GFS2
45 in a cluster environment.