[linux.git] / fs / ext3 / Kconfig

config EXT3_FS
	tristate "Ext3 journalling file system support"
	select JBD
	help
	  This is the journalling version of the Second extended file system
	  (often called ext3), the de facto standard Linux file system
	  (method to organize files on a storage device) for hard disks.

	  The journalling code included in this driver means you do not have
	  to run e2fsck (file system checker) on your file systems after a
	  crash.  The journal keeps track of any changes that were being made
	  at the time the system crashed, and can ensure that your file system
	  is consistent without the need for a lengthy check.

	  Other than adding the journal to the file system, the on-disk format
	  of ext3 is identical to ext2.  It is possible to freely switch
	  between using the ext3 driver and the ext2 driver, as long as the
	  file system has been cleanly unmounted, or e2fsck is run on the file
	  system.

	  To add a journal on an existing ext2 file system or change the
	  behavior of ext3 file systems, you can use the tune2fs utility ("man
	  tune2fs").  To modify attributes of files and directories on ext3
	  file systems, use chattr ("man chattr").  You need to be using
	  e2fsprogs version 1.20 or later in order to create ext3 journals
	  (available at <http://sourceforge.net/projects/e2fsprogs/>).

	  To compile this file system support as a module, choose M here: the
	  module will be called ext3.

config EXT3_DEFAULTS_TO_ORDERED
	bool "Default to 'data=ordered' in ext3 (legacy option)"
	depends on EXT3_FS
	help
	  If a filesystem does not explicitly specify a data ordering
	  mode, and the journal capability allowed it, ext3 used to
	  historically default to 'data=ordered'.

	  That was a rather unfortunate choice, because it leads to all
	  kinds of latency problems, and the 'data=writeback' mode is more
	  appropriate these days.

	  You should probably always answer 'n' here, and if you really
	  want to use 'data=ordered' mode, set it in the filesystem itself
	  with 'tune2fs -o journal_data_ordered'.

	  But if you really want to enable the legacy default, you can do
	  so by answering 'y' to this question.

config EXT3_FS_XATTR
	bool "Ext3 extended attributes"
	depends on EXT3_FS
	default y
	help
	  Extended attributes are name:value pairs associated with inodes by
	  the kernel or by users (see the attr(5) manual page, or visit
	  <http://acl.bestbits.at/> for details).

	  If unsure, say N.

	  You need this for POSIX ACL support on ext3.

config EXT3_FS_POSIX_ACL
	bool "Ext3 POSIX Access Control Lists"
	depends on EXT3_FS_XATTR
	select FS_POSIX_ACL
	help
	  Posix Access Control Lists (ACLs) support permissions for users and
	  groups beyond the owner/group/world scheme.

	  To learn more about Access Control Lists, visit the Posix ACLs for
	  Linux website <http://acl.bestbits.at/>.

	  If you don't know what Access Control Lists are, say N

config EXT3_FS_SECURITY
	bool "Ext3 Security Labels"
	depends on EXT3_FS_XATTR
	help
	  Security labels support alternative access control models
	  implemented by security modules like SELinux.  This option
	  enables an extended attribute handler for file security
	  labels in the ext3 filesystem.

	  If you are not using a security module that requires using
	  extended attributes for file security labels, say N.
Commit	Line	Data
6da0b38f AD	1	config EXT3_FS
	2	tristate "Ext3 journalling file system support"
	3	select JBD
	4	help
	5	This is the journalling version of the Second extended file system
	6	(often called ext3), the de facto standard Linux file system
	7	(method to organize files on a storage device) for hard disks.
	8
	9	The journalling code included in this driver means you do not have
	10	to run e2fsck (file system checker) on your file systems after a
	11	crash. The journal keeps track of any changes that were being made
	12	at the time the system crashed, and can ensure that your file system
	13	is consistent without the need for a lengthy check.
	14
	15	Other than adding the journal to the file system, the on-disk format
	16	of ext3 is identical to ext2. It is possible to freely switch
	17	between using the ext3 driver and the ext2 driver, as long as the
	18	file system has been cleanly unmounted, or e2fsck is run on the file
	19	system.
	20
	21	To add a journal on an existing ext2 file system or change the
	22	behavior of ext3 file systems, you can use the tune2fs utility ("man
	23	tune2fs"). To modify attributes of files and directories on ext3
	24	file systems, use chattr ("man chattr"). You need to be using
	25	e2fsprogs version 1.20 or later in order to create ext3 journals
	26	(available at <http://sourceforge.net/projects/e2fsprogs/>).
	27
	28	To compile this file system support as a module, choose M here: the
	29	module will be called ext3.
	30
bbae8bcc LT	31	config EXT3_DEFAULTS_TO_ORDERED
	32	bool "Default to 'data=ordered' in ext3 (legacy option)"
	33	depends on EXT3_FS
	34	help
	35	If a filesystem does not explicitly specify a data ordering
	36	mode, and the journal capability allowed it, ext3 used to
	37	historically default to 'data=ordered'.
	38
	39	That was a rather unfortunate choice, because it leads to all
	40	kinds of latency problems, and the 'data=writeback' mode is more
	41	appropriate these days.
	42
	43	You should probably always answer 'n' here, and if you really
	44	want to use 'data=ordered' mode, set it in the filesystem itself
	45	with 'tune2fs -o journal_data_ordered'.
	46
	47	But if you really want to enable the legacy default, you can do
	48	so by answering 'y' to this question.
	49
6da0b38f AD	50	config EXT3_FS_XATTR
	51	bool "Ext3 extended attributes"
	52	depends on EXT3_FS
	53	default y
	54	help
	55	Extended attributes are name:value pairs associated with inodes by
	56	the kernel or by users (see the attr(5) manual page, or visit
	57	<http://acl.bestbits.at/> for details).
	58
	59	If unsure, say N.
	60
	61	You need this for POSIX ACL support on ext3.
	62
	63	config EXT3_FS_POSIX_ACL
	64	bool "Ext3 POSIX Access Control Lists"
	65	depends on EXT3_FS_XATTR
	66	select FS_POSIX_ACL
	67	help
	68	Posix Access Control Lists (ACLs) support permissions for users and
	69	groups beyond the owner/group/world scheme.
	70
	71	To learn more about Access Control Lists, visit the Posix ACLs for
	72	Linux website <http://acl.bestbits.at/>.
	73
	74	If you don't know what Access Control Lists are, say N
	75
	76	config EXT3_FS_SECURITY
	77	bool "Ext3 Security Labels"
	78	depends on EXT3_FS_XATTR
	79	help
	80	Security labels support alternative access control models
	81	implemented by security modules like SELinux. This option
	82	enables an extended attribute handler for file security
	83	labels in the ext3 filesystem.
	84
	85	If you are not using a security module that requires using
	86	extended attributes for file security labels, say N.