Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | config XFS_FS |
2 | tristate "XFS filesystem support" | |
9361401e | 3 | depends on BLOCK |
1da177e4 LT |
4 | help |
5 | XFS is a high performance journaling filesystem which originated | |
6 | on the SGI IRIX platform. It is completely multi-threaded, can | |
7 | support large files and large filesystems, extended attributes, | |
8 | variable block sizes, is extent based, and makes extensive use of | |
9 | Btrees (directories, extents, free space) to aid both performance | |
10 | and scalability. | |
11 | ||
12 | Refer to the documentation at <http://oss.sgi.com/projects/xfs/> | |
13 | for complete details. This implementation is on-disk compatible | |
14 | with the IRIX version of XFS. | |
15 | ||
16 | To compile this file system support as a module, choose M here: the | |
17 | module will be called xfs. Be aware, however, that if the file | |
18 | system of your root partition is compiled as a module, you'll need | |
19 | to use an initial ramdisk (initrd) to boot. | |
20 | ||
1da177e4 | 21 | config XFS_QUOTA |
538524ae | 22 | bool "XFS Quota support" |
1da177e4 LT |
23 | depends on XFS_FS |
24 | help | |
25 | If you say Y here, you will be able to set limits for disk usage on | |
26 | a per user and/or a per group basis under XFS. XFS considers quota | |
27 | information as filesystem metadata and uses journaling to provide a | |
28 | higher level guarantee of consistency. The on-disk data format for | |
29 | quota is also compatible with the IRIX version of XFS, allowing a | |
30 | filesystem to be migrated between Linux and IRIX without any need | |
31 | for conversion. | |
32 | ||
33 | If unsure, say N. More comprehensive documentation can be found in | |
34 | README.quota in the xfsprogs package. XFS quota can be used either | |
35 | with or without the generic quota support enabled (CONFIG_QUOTA) - | |
36 | they are completely independent subsystems. | |
37 | ||
1da177e4 | 38 | config XFS_POSIX_ACL |
20ba0287 | 39 | bool "XFS POSIX ACL support" |
1da177e4 LT |
40 | depends on XFS_FS |
41 | help | |
42 | POSIX Access Control Lists (ACLs) support permissions for users and | |
43 | groups beyond the owner/group/world scheme. | |
44 | ||
45 | To learn more about Access Control Lists, visit the POSIX ACLs for | |
46 | Linux website <http://acl.bestbits.at/>. | |
47 | ||
48 | If you don't know what Access Control Lists are, say N. | |
49 | ||
20ba0287 | 50 | config XFS_RT |
d7ede1aa NS |
51 | bool "XFS Realtime subvolume support" |
52 | depends on XFS_FS | |
20ba0287 NS |
53 | help |
54 | If you say Y here you will be able to mount and use XFS filesystems | |
d7ede1aa NS |
55 | which contain a realtime subvolume. The realtime subvolume is a |
56 | separate area of disk space where only file data is stored. It was | |
57 | originally designed to provide deterministic data rates suitable | |
58 | for media streaming applications, but is also useful as a generic | |
59 | mechanism for ensuring data and metadata/log I/Os are completely | |
60 | separated. Regular file I/Os are isolated to a separate device | |
61 | from all other requests, and this can be done quite transparently | |
62 | to applications via the inherit-realtime directory inode flag. | |
20ba0287 | 63 | |
d7ede1aa | 64 | See the xfs man page in section 5 for additional information. |
20ba0287 NS |
65 | |
66 | If unsure, say N. | |
7788fae6 CH |
67 | |
68 | config XFS_DEBUG | |
69 | bool "XFS Debugging support (EXPERIMENTAL)" | |
70 | depends on XFS_FS && EXPERIMENTAL | |
71 | help | |
72 | Say Y here to get an XFS build with many debugging features, | |
73 | including ASSERT checks, function wrappers around macros, | |
74 | and extra sanity-checking functions in various code paths. | |
75 | ||
76 | Note that the resulting code will be HUGE and SLOW, and probably | |
77 | not useful unless you are debugging a particular problem. | |
78 | ||
79 | Say N unless you are an XFS developer, or you play one on TV. |