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Linus Torvalds1da177e2005-04-16 15:20:36 -07001config XFS_FS
2 tristate "XFS filesystem support"
David Howells93614012006-09-30 20:45:40 +02003 depends on BLOCK
Christoph Hellwigd296d302009-01-19 02:02:57 +01004 select EXPORTFS
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 help
6 XFS is a high performance journaling filesystem which originated
7 on the SGI IRIX platform. It is completely multi-threaded, can
8 support large files and large filesystems, extended attributes,
9 variable block sizes, is extent based, and makes extensive use of
10 Btrees (directories, extents, free space) to aid both performance
11 and scalability.
12
13 Refer to the documentation at <http://oss.sgi.com/projects/xfs/>
14 for complete details. This implementation is on-disk compatible
15 with the IRIX version of XFS.
16
17 To compile this file system support as a module, choose M here: the
18 module will be called xfs. Be aware, however, that if the file
19 system of your root partition is compiled as a module, you'll need
20 to use an initial ramdisk (initrd) to boot.
21
Linus Torvalds1da177e2005-04-16 15:20:36 -070022config XFS_QUOTA
Nathan Scott538524a2005-11-03 13:55:06 +110023 bool "XFS Quota support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 depends on XFS_FS
25 help
26 If you say Y here, you will be able to set limits for disk usage on
27 a per user and/or a per group basis under XFS. XFS considers quota
28 information as filesystem metadata and uses journaling to provide a
29 higher level guarantee of consistency. The on-disk data format for
30 quota is also compatible with the IRIX version of XFS, allowing a
31 filesystem to be migrated between Linux and IRIX without any need
32 for conversion.
33
34 If unsure, say N. More comprehensive documentation can be found in
35 README.quota in the xfsprogs package. XFS quota can be used either
36 with or without the generic quota support enabled (CONFIG_QUOTA) -
37 they are completely independent subsystems.
38
Linus Torvalds1da177e2005-04-16 15:20:36 -070039config XFS_POSIX_ACL
Nathan Scott20ba0282005-09-08 15:34:58 +100040 bool "XFS POSIX ACL support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070041 depends on XFS_FS
Christoph Hellwigef14f0c2009-06-10 17:07:47 +020042 select FS_POSIX_ACL
Linus Torvalds1da177e2005-04-16 15:20:36 -070043 help
44 POSIX Access Control Lists (ACLs) support permissions for users and
45 groups beyond the owner/group/world scheme.
46
47 To learn more about Access Control Lists, visit the POSIX ACLs for
48 Linux website <http://acl.bestbits.at/>.
49
50 If you don't know what Access Control Lists are, say N.
51
Nathan Scott20ba0282005-09-08 15:34:58 +100052config XFS_RT
Nathan Scottd7ede1a2006-06-13 16:28:11 +100053 bool "XFS Realtime subvolume support"
54 depends on XFS_FS
Nathan Scott20ba0282005-09-08 15:34:58 +100055 help
56 If you say Y here you will be able to mount and use XFS filesystems
Nathan Scottd7ede1a2006-06-13 16:28:11 +100057 which contain a realtime subvolume. The realtime subvolume is a
58 separate area of disk space where only file data is stored. It was
59 originally designed to provide deterministic data rates suitable
60 for media streaming applications, but is also useful as a generic
61 mechanism for ensuring data and metadata/log I/Os are completely
62 separated. Regular file I/Os are isolated to a separate device
63 from all other requests, and this can be done quite transparently
64 to applications via the inherit-realtime directory inode flag.
Nathan Scott20ba0282005-09-08 15:34:58 +100065
Nathan Scottd7ede1a2006-06-13 16:28:11 +100066 See the xfs man page in section 5 for additional information.
Nathan Scott20ba0282005-09-08 15:34:58 +100067
68 If unsure, say N.
Christoph Hellwig7788fae2008-04-21 17:22:27 +100069
70config XFS_DEBUG
71 bool "XFS Debugging support (EXPERIMENTAL)"
72 depends on XFS_FS && EXPERIMENTAL
73 help
74 Say Y here to get an XFS build with many debugging features,
75 including ASSERT checks, function wrappers around macros,
76 and extra sanity-checking functions in various code paths.
77
78 Note that the resulting code will be HUGE and SLOW, and probably
79 not useful unless you are debugging a particular problem.
80
81 Say N unless you are an XFS developer, or you play one on TV.