xref: /openbmc/linux/fs/gfs2/Kconfig (revision e868d61272caa648214046a096e5a6bfc068dc8c)
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 && SYSFS && NET && INET && (IPV6 || IPV6=n)
38	select IP_SCTP if DLM_SCTP
39	select CONFIGFS_FS
40	select DLM
41	help
42	  Multiple node locking module for GFS2
43
44	  Most users of GFS2 will require this module. It provides the locking
45	  interface between GFS2 and the DLM, which is required to use GFS2
46	  in a cluster environment.
47