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1da177e4 LT |
1 | config XFS_FS |
2 | tristate "XFS filesystem support" | |
9361401e | 3 | depends on BLOCK |
d5cf09ba | 4 | depends on (64BIT || LBDAF) |
d296d30a | 5 | select EXPORTFS |
bc02e869 | 6 | select LIBCRC32C |
68a9f5e7 | 7 | select FS_IOMAP |
1da177e4 LT |
8 | help |
9 | XFS is a high performance journaling filesystem which originated | |
10 | on the SGI IRIX platform. It is completely multi-threaded, can | |
11 | support large files and large filesystems, extended attributes, | |
12 | variable block sizes, is extent based, and makes extensive use of | |
13 | Btrees (directories, extents, free space) to aid both performance | |
14 | and scalability. | |
15 | ||
16 | Refer to the documentation at <http://oss.sgi.com/projects/xfs/> | |
17 | for complete details. This implementation is on-disk compatible | |
18 | with the IRIX version of XFS. | |
19 | ||
20 | To compile this file system support as a module, choose M here: the | |
21 | module will be called xfs. Be aware, however, that if the file | |
22 | system of your root partition is compiled as a module, you'll need | |
23 | to use an initial ramdisk (initrd) to boot. | |
24 | ||
1da177e4 | 25 | config XFS_QUOTA |
538524ae | 26 | bool "XFS Quota support" |
1da177e4 | 27 | depends on XFS_FS |
80f44b15 | 28 | select QUOTACTL |
1da177e4 LT |
29 | help |
30 | If you say Y here, you will be able to set limits for disk usage on | |
31 | a per user and/or a per group basis under XFS. XFS considers quota | |
32 | information as filesystem metadata and uses journaling to provide a | |
33 | higher level guarantee of consistency. The on-disk data format for | |
34 | quota is also compatible with the IRIX version of XFS, allowing a | |
35 | filesystem to be migrated between Linux and IRIX without any need | |
36 | for conversion. | |
37 | ||
38 | If unsure, say N. More comprehensive documentation can be found in | |
39 | README.quota in the xfsprogs package. XFS quota can be used either | |
40 | with or without the generic quota support enabled (CONFIG_QUOTA) - | |
41 | they are completely independent subsystems. | |
42 | ||
1da177e4 | 43 | config XFS_POSIX_ACL |
20ba0287 | 44 | bool "XFS POSIX ACL support" |
1da177e4 | 45 | depends on XFS_FS |
ef14f0c1 | 46 | select FS_POSIX_ACL |
1da177e4 LT |
47 | help |
48 | POSIX Access Control Lists (ACLs) support permissions for users and | |
49 | groups beyond the owner/group/world scheme. | |
50 | ||
51 | To learn more about Access Control Lists, visit the POSIX ACLs for | |
52 | Linux website <http://acl.bestbits.at/>. | |
53 | ||
54 | If you don't know what Access Control Lists are, say N. | |
55 | ||
20ba0287 | 56 | config XFS_RT |
d7ede1aa NS |
57 | bool "XFS Realtime subvolume support" |
58 | depends on XFS_FS | |
20ba0287 NS |
59 | help |
60 | If you say Y here you will be able to mount and use XFS filesystems | |
d7ede1aa NS |
61 | which contain a realtime subvolume. The realtime subvolume is a |
62 | separate area of disk space where only file data is stored. It was | |
63 | originally designed to provide deterministic data rates suitable | |
64 | for media streaming applications, but is also useful as a generic | |
65 | mechanism for ensuring data and metadata/log I/Os are completely | |
66 | separated. Regular file I/Os are isolated to a separate device | |
67 | from all other requests, and this can be done quite transparently | |
68 | to applications via the inherit-realtime directory inode flag. | |
20ba0287 | 69 | |
d7ede1aa | 70 | See the xfs man page in section 5 for additional information. |
20ba0287 NS |
71 | |
72 | If unsure, say N. | |
7788fae6 | 73 | |
36fd6e86 DW |
74 | config XFS_ONLINE_SCRUB |
75 | bool "XFS online metadata check support" | |
76 | default n | |
77 | depends on XFS_FS | |
78 | help | |
79 | If you say Y here you will be able to check metadata on a | |
80 | mounted XFS filesystem. This feature is intended to reduce | |
81 | filesystem downtime by supplementing xfs_repair. The key | |
82 | advantage here is to look for problems proactively so that | |
83 | they can be dealt with in a controlled manner. | |
84 | ||
85 | This feature is considered EXPERIMENTAL. Use with caution! | |
86 | ||
87 | See the xfs_scrub man page in section 8 for additional information. | |
88 | ||
89 | If unsure, say N. | |
90 | ||
742ae1e3 DC |
91 | config XFS_WARN |
92 | bool "XFS Verbose Warnings" | |
93 | depends on XFS_FS && !XFS_DEBUG | |
94 | help | |
95 | Say Y here to get an XFS build with many additional warnings. | |
96 | It converts ASSERT checks to WARN, so will log any out-of-bounds | |
97 | conditions that occur that would otherwise be missed. It is much | |
98 | lighter weight than XFS_DEBUG and does not modify algorithms and will | |
99 | not cause the kernel to panic on non-fatal errors. | |
100 | ||
101 | However, similar to XFS_DEBUG, it is only advisable to use this if you | |
102 | are debugging a particular problem. | |
103 | ||
7788fae6 | 104 | config XFS_DEBUG |
d9777b8d KC |
105 | bool "XFS Debugging support" |
106 | depends on XFS_FS | |
7788fae6 CH |
107 | help |
108 | Say Y here to get an XFS build with many debugging features, | |
109 | including ASSERT checks, function wrappers around macros, | |
110 | and extra sanity-checking functions in various code paths. | |
111 | ||
112 | Note that the resulting code will be HUGE and SLOW, and probably | |
113 | not useful unless you are debugging a particular problem. | |
114 | ||
115 | Say N unless you are an XFS developer, or you play one on TV. | |
1040960e BF |
116 | |
117 | config XFS_ASSERT_FATAL | |
118 | bool "XFS fatal asserts" | |
119 | default y | |
120 | depends on XFS_FS && XFS_DEBUG | |
121 | help | |
122 | Set the default DEBUG mode ASSERT failure behavior. | |
123 | ||
124 | Say Y here to cause DEBUG mode ASSERT failures to result in fatal | |
125 | errors that BUG() the kernel by default. If you say N, ASSERT failures | |
126 | result in warnings. | |
127 | ||
128 | This behavior can be modified at runtime via sysfs. |