| config XFS_FS |
| tristate "XFS filesystem support" |
| depends on BLOCK |
| select EXPORTFS |
| help |
| XFS is a high performance journaling filesystem which originated |
| on the SGI IRIX platform. It is completely multi-threaded, can |
| support large files and large filesystems, extended attributes, |
| variable block sizes, is extent based, and makes extensive use of |
| Btrees (directories, extents, free space) to aid both performance |
| and scalability. |
| |
| Refer to the documentation at <http://oss.sgi.com/projects/xfs/> |
| for complete details. This implementation is on-disk compatible |
| with the IRIX version of XFS. |
| |
| To compile this file system support as a module, choose M here: the |
| module will be called xfs. Be aware, however, that if the file |
| system of your root partition is compiled as a module, you'll need |
| to use an initial ramdisk (initrd) to boot. |
| |
| config XFS_QUOTA |
| bool "XFS Quota support" |
| depends on XFS_FS |
| select QUOTACTL |
| help |
| If you say Y here, you will be able to set limits for disk usage on |
| a per user and/or a per group basis under XFS. XFS considers quota |
| information as filesystem metadata and uses journaling to provide a |
| higher level guarantee of consistency. The on-disk data format for |
| quota is also compatible with the IRIX version of XFS, allowing a |
| filesystem to be migrated between Linux and IRIX without any need |
| for conversion. |
| |
| If unsure, say N. More comprehensive documentation can be found in |
| README.quota in the xfsprogs package. XFS quota can be used either |
| with or without the generic quota support enabled (CONFIG_QUOTA) - |
| they are completely independent subsystems. |
| |
| config XFS_POSIX_ACL |
| bool "XFS POSIX ACL support" |
| depends on XFS_FS |
| select FS_POSIX_ACL |
| help |
| POSIX Access Control Lists (ACLs) support permissions for users and |
| groups beyond the owner/group/world scheme. |
| |
| To learn more about Access Control Lists, visit the POSIX ACLs for |
| Linux website <http://acl.bestbits.at/>. |
| |
| If you don't know what Access Control Lists are, say N. |
| |
| config XFS_RT |
| bool "XFS Realtime subvolume support" |
| depends on XFS_FS |
| help |
| If you say Y here you will be able to mount and use XFS filesystems |
| which contain a realtime subvolume. The realtime subvolume is a |
| separate area of disk space where only file data is stored. It was |
| originally designed to provide deterministic data rates suitable |
| for media streaming applications, but is also useful as a generic |
| mechanism for ensuring data and metadata/log I/Os are completely |
| separated. Regular file I/Os are isolated to a separate device |
| from all other requests, and this can be done quite transparently |
| to applications via the inherit-realtime directory inode flag. |
| |
| See the xfs man page in section 5 for additional information. |
| |
| If unsure, say N. |
| |
| config XFS_DEBUG |
| bool "XFS Debugging support (EXPERIMENTAL)" |
| depends on XFS_FS && EXPERIMENTAL |
| help |
| Say Y here to get an XFS build with many debugging features, |
| including ASSERT checks, function wrappers around macros, |
| and extra sanity-checking functions in various code paths. |
| |
| Note that the resulting code will be HUGE and SLOW, and probably |
| not useful unless you are debugging a particular problem. |
| |
| Say N unless you are an XFS developer, or you play one on TV. |