| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | menu "XFS support" |
| 2 | |
| 3 | config XFS_FS |
| 4 | tristate "XFS filesystem support" |
| 5 | select EXPORTFS if NFSD!=n |
| 6 | help |
| 7 | XFS is a high performance journaling filesystem which originated |
| 8 | on the SGI IRIX platform. It is completely multi-threaded, can |
| 9 | support large files and large filesystems, extended attributes, |
| 10 | variable block sizes, is extent based, and makes extensive use of |
| 11 | Btrees (directories, extents, free space) to aid both performance |
| 12 | and scalability. |
| 13 | |
| 14 | Refer to the documentation at <http://oss.sgi.com/projects/xfs/> |
| 15 | for complete details. This implementation is on-disk compatible |
| 16 | with the IRIX version of XFS. |
| 17 | |
| 18 | To compile this file system support as a module, choose M here: the |
| 19 | module will be called xfs. Be aware, however, that if the file |
| 20 | system of your root partition is compiled as a module, you'll need |
| 21 | to use an initial ramdisk (initrd) to boot. |
| 22 | |
| 23 | config XFS_EXPORT |
| 24 | bool |
| 25 | default y if XFS_FS && EXPORTFS |
| 26 | |
| 27 | config XFS_RT |
| 28 | bool "Realtime support (EXPERIMENTAL)" |
| 29 | depends on XFS_FS && EXPERIMENTAL |
| 30 | help |
| 31 | If you say Y here you will be able to mount and use XFS filesystems |
| 32 | which contain a realtime subvolume. The realtime subvolume is a |
| 33 | separate area of disk space where only file data is stored. The |
| 34 | realtime subvolume is designed to provide very deterministic |
| 35 | data rates suitable for media streaming applications. |
| 36 | |
| 37 | See the xfs man page in section 5 for a bit more information. |
| 38 | |
| 39 | This feature is unsupported at this time, is not yet fully |
| 40 | functional, and may cause serious problems. |
| 41 | |
| 42 | If unsure, say N. |
| 43 | |
| 44 | config XFS_QUOTA |
| 45 | bool "Quota support" |
| 46 | depends on XFS_FS |
| 47 | help |
| 48 | If you say Y here, you will be able to set limits for disk usage on |
| 49 | a per user and/or a per group basis under XFS. XFS considers quota |
| 50 | information as filesystem metadata and uses journaling to provide a |
| 51 | higher level guarantee of consistency. The on-disk data format for |
| 52 | quota is also compatible with the IRIX version of XFS, allowing a |
| 53 | filesystem to be migrated between Linux and IRIX without any need |
| 54 | for conversion. |
| 55 | |
| 56 | If unsure, say N. More comprehensive documentation can be found in |
| 57 | README.quota in the xfsprogs package. XFS quota can be used either |
| 58 | with or without the generic quota support enabled (CONFIG_QUOTA) - |
| 59 | they are completely independent subsystems. |
| 60 | |
| 61 | config XFS_SECURITY |
| 62 | bool "Security Label support" |
| 63 | depends on XFS_FS |
| 64 | help |
| 65 | Security labels support alternative access control models |
| 66 | implemented by security modules like SELinux. This option |
| 67 | enables an extended attribute namespace for inode security |
| 68 | labels in the XFS filesystem. |
| 69 | |
| 70 | If you are not using a security module that requires using |
| 71 | extended attributes for inode security labels, say N. |
| 72 | |
| 73 | config XFS_POSIX_ACL |
| 74 | bool "POSIX ACL support" |
| 75 | depends on XFS_FS |
| 76 | help |
| 77 | POSIX Access Control Lists (ACLs) support permissions for users and |
| 78 | groups beyond the owner/group/world scheme. |
| 79 | |
| 80 | To learn more about Access Control Lists, visit the POSIX ACLs for |
| 81 | Linux website <http://acl.bestbits.at/>. |
| 82 | |
| 83 | If you don't know what Access Control Lists are, say N. |
| 84 | |
| 85 | endmenu |