Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | config XFS_FS |
| 2 | tristate "XFS filesystem support" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | help |
| 4 | XFS is a high performance journaling filesystem which originated |
| 5 | on the SGI IRIX platform. It is completely multi-threaded, can |
| 6 | support large files and large filesystems, extended attributes, |
| 7 | variable block sizes, is extent based, and makes extensive use of |
| 8 | Btrees (directories, extents, free space) to aid both performance |
| 9 | and scalability. |
| 10 | |
| 11 | Refer to the documentation at <http://oss.sgi.com/projects/xfs/> |
| 12 | for complete details. This implementation is on-disk compatible |
| 13 | with the IRIX version of XFS. |
| 14 | |
| 15 | To compile this file system support as a module, choose M here: the |
| 16 | module will be called xfs. Be aware, however, that if the file |
| 17 | system of your root partition is compiled as a module, you'll need |
| 18 | to use an initial ramdisk (initrd) to boot. |
| 19 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | config XFS_QUOTA |
Nathan Scott | 538524a | 2005-11-03 13:55:06 +1100 | [diff] [blame] | 21 | bool "XFS Quota support" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | depends on XFS_FS |
| 23 | help |
| 24 | If you say Y here, you will be able to set limits for disk usage on |
| 25 | a per user and/or a per group basis under XFS. XFS considers quota |
| 26 | information as filesystem metadata and uses journaling to provide a |
| 27 | higher level guarantee of consistency. The on-disk data format for |
| 28 | quota is also compatible with the IRIX version of XFS, allowing a |
| 29 | filesystem to be migrated between Linux and IRIX without any need |
| 30 | for conversion. |
| 31 | |
| 32 | If unsure, say N. More comprehensive documentation can be found in |
| 33 | README.quota in the xfsprogs package. XFS quota can be used either |
| 34 | with or without the generic quota support enabled (CONFIG_QUOTA) - |
| 35 | they are completely independent subsystems. |
| 36 | |
| 37 | config XFS_SECURITY |
Nathan Scott | 20ba028 | 2005-09-08 15:34:58 +1000 | [diff] [blame] | 38 | bool "XFS Security Label support" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | depends on XFS_FS |
| 40 | help |
| 41 | Security labels support alternative access control models |
| 42 | implemented by security modules like SELinux. This option |
| 43 | enables an extended attribute namespace for inode security |
| 44 | labels in the XFS filesystem. |
| 45 | |
| 46 | If you are not using a security module that requires using |
| 47 | extended attributes for inode security labels, say N. |
| 48 | |
| 49 | config XFS_POSIX_ACL |
Nathan Scott | 20ba028 | 2005-09-08 15:34:58 +1000 | [diff] [blame] | 50 | bool "XFS POSIX ACL support" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | depends on XFS_FS |
| 52 | help |
| 53 | POSIX Access Control Lists (ACLs) support permissions for users and |
| 54 | groups beyond the owner/group/world scheme. |
| 55 | |
| 56 | To learn more about Access Control Lists, visit the POSIX ACLs for |
| 57 | Linux website <http://acl.bestbits.at/>. |
| 58 | |
| 59 | If you don't know what Access Control Lists are, say N. |
| 60 | |
Nathan Scott | 20ba028 | 2005-09-08 15:34:58 +1000 | [diff] [blame] | 61 | config XFS_RT |
Nathan Scott | d7ede1a | 2006-06-13 16:28:11 +1000 | [diff] [blame] | 62 | bool "XFS Realtime subvolume support" |
| 63 | depends on XFS_FS |
Nathan Scott | 20ba028 | 2005-09-08 15:34:58 +1000 | [diff] [blame] | 64 | help |
| 65 | If you say Y here you will be able to mount and use XFS filesystems |
Nathan Scott | d7ede1a | 2006-06-13 16:28:11 +1000 | [diff] [blame] | 66 | which contain a realtime subvolume. The realtime subvolume is a |
| 67 | separate area of disk space where only file data is stored. It was |
| 68 | originally designed to provide deterministic data rates suitable |
| 69 | for media streaming applications, but is also useful as a generic |
| 70 | mechanism for ensuring data and metadata/log I/Os are completely |
| 71 | separated. Regular file I/Os are isolated to a separate device |
| 72 | from all other requests, and this can be done quite transparently |
| 73 | to applications via the inherit-realtime directory inode flag. |
Nathan Scott | 20ba028 | 2005-09-08 15:34:58 +1000 | [diff] [blame] | 74 | |
Nathan Scott | d7ede1a | 2006-06-13 16:28:11 +1000 | [diff] [blame] | 75 | See the xfs man page in section 5 for additional information. |
Nathan Scott | 20ba028 | 2005-09-08 15:34:58 +1000 | [diff] [blame] | 76 | |
| 77 | If unsure, say N. |