[linux-2.6-block.git] / fs / gfs2 / Kconfig

# SPDX-License-Identifier: GPL-2.0-only
config GFS2_FS
	tristate "GFS2 file system support"
	select FS_POSIX_ACL
	select CRC32
	select LIBCRC32C
	select QUOTACTL
	select FS_IOMAP
	help
	  A cluster filesystem.

	  Allows a cluster of computers to simultaneously use a block device
	  that is shared between them (with FC, iSCSI, NBD, etc...).  GFS reads
	  and writes to the block device like a local filesystem, but also uses
	  a lock module to allow the computers coordinate their I/O so
	  filesystem consistency is maintained.  One of the nifty features of
	  GFS is perfect consistency -- changes made to the filesystem on one
	  machine show up immediately on all other machines in the cluster.

	  To use the GFS2 filesystem in a cluster, you will need to enable
	  the locking module below. Documentation and utilities for GFS2 can
	  be found here: http://sources.redhat.com/cluster

	  The "nolock" lock module is now built in to GFS2 by default. If
	  you want to use the DLM, be sure to enable IPv4/6 networking.

config GFS2_FS_LOCKING_DLM
	bool "GFS2 DLM locking"
	depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && \
		CONFIGFS_FS && SYSFS && (DLM=y || DLM=GFS2_FS)
	help
	  Multiple node locking module for GFS2

	  Most users of GFS2 will require this. It provides the locking
	  interface between GFS2 and the DLM, which is required to use GFS2
	  in a cluster environment.
Commit	Line	Data
ec8f24b7	1	# SPDX-License-Identifier: GPL-2.0-only
b3b94faa	2	config GFS2_FS
b5ea3e1e	3	tristate "GFS2 file system support"
b5ea3e1e	4	select FS_POSIX_ACL
fa2ecfc5	5	select CRC32
dcb2cd55	6	select LIBCRC32C
cc632e7f	7	select QUOTACTL
aac1a55b	8	select FS_IOMAP
b5ea3e1e	9	help
9beeb9f3	10	A cluster filesystem.
b5ea3e1e	11
9beeb9f3 RD	12	Allows a cluster of computers to simultaneously use a block device
	13	that is shared between them (with FC, iSCSI, NBD, etc...). GFS reads
	14	and writes to the block device like a local filesystem, but also uses
	15	a lock module to allow the computers coordinate their I/O so
	16	filesystem consistency is maintained. One of the nifty features of
	17	GFS is perfect consistency -- changes made to the filesystem on one
	18	machine show up immediately on all other machines in the cluster.
b3b94faa	19
048bca22 SW	20	To use the GFS2 filesystem in a cluster, you will need to enable
048bca22 SW	21	the locking module below. Documentation and utilities for GFS2 can
9beeb9f3	22	be found here: http://sources.redhat.com/cluster
b3b94faa	23
f057f6cd	24	The "nolock" lock module is now built in to GFS2 by default. If
40b31360	25	you want to use the DLM, be sure to enable IPv4/6 networking.
b3b94faa DT	26
b3b94faa DT	27	config GFS2_FS_LOCKING_DLM
f057f6cd	28	bool "GFS2 DLM locking"
97cc008a	29	depends on (GFS2_FS!=n) && NET && INET && (IPV6 \|\| IPV6=n) && \
40b31360	30	CONFIGFS_FS && SYSFS && (DLM=y \|\| DLM=GFS2_FS)
b3b94faa	31	help
9beeb9f3	32	Multiple node locking module for GFS2
b3b94faa	33
f057f6cd	34	Most users of GFS2 will require this. It provides the locking
9beeb9f3 RD	35	interface between GFS2 and the DLM, which is required to use GFS2
9beeb9f3 RD	36	in a cluster environment.