123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168 |
- # SPDX-License-Identifier: GPL-2.0-only
- config XFS_FS
- tristate "XFS filesystem support"
- depends on BLOCK
- select EXPORTFS
- select LIBCRC32C
- select FS_IOMAP
- 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_SUPPORT_V4
- bool "Support deprecated V4 (crc=0) format"
- depends on XFS_FS
- default y
- help
- The V4 filesystem format lacks certain features that are supported
- by the V5 format, such as metadata checksumming, strengthened
- metadata verification, and the ability to store timestamps past the
- year 2038. Because of this, the V4 format is deprecated. All users
- should upgrade by backing up their files, reformatting, and restoring
- from the backup.
- Administrators and users can detect a V4 filesystem by running
- xfs_info against a filesystem mountpoint and checking for a string
- beginning with "crc=". If the string "crc=0" is found, the
- filesystem is a V4 filesystem. If no such string is found, please
- upgrade xfsprogs to the latest version and try again.
- This option will become default N in September 2025. Support for the
- V4 format will be removed entirely in September 2030. Distributors
- can say N here to withdraw support earlier.
- To continue supporting the old V4 format (crc=0), say Y.
- To close off an attack surface, say N.
- 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.
- 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_ONLINE_SCRUB
- bool "XFS online metadata check support"
- default n
- depends on XFS_FS
- help
- If you say Y here you will be able to check metadata on a
- mounted XFS filesystem. This feature is intended to reduce
- filesystem downtime by supplementing xfs_repair. The key
- advantage here is to look for problems proactively so that
- they can be dealt with in a controlled manner.
- This feature is considered EXPERIMENTAL. Use with caution!
- See the xfs_scrub man page in section 8 for additional information.
- If unsure, say N.
- config XFS_ONLINE_REPAIR
- bool "XFS online metadata repair support"
- default n
- depends on XFS_FS && XFS_ONLINE_SCRUB
- help
- If you say Y here you will be able to repair metadata on a
- mounted XFS filesystem. This feature is intended to reduce
- filesystem downtime by fixing minor problems before they cause the
- filesystem to go down. However, it requires that the filesystem be
- formatted with secondary metadata, such as reverse mappings and inode
- parent pointers.
- This feature is considered EXPERIMENTAL. Use with caution!
- See the xfs_scrub man page in section 8 for additional information.
- If unsure, say N.
- config XFS_WARN
- bool "XFS Verbose Warnings"
- depends on XFS_FS && !XFS_DEBUG
- help
- Say Y here to get an XFS build with many additional warnings.
- It converts ASSERT checks to WARN, so will log any out-of-bounds
- conditions that occur that would otherwise be missed. It is much
- lighter weight than XFS_DEBUG and does not modify algorithms and will
- not cause the kernel to panic on non-fatal errors.
- However, similar to XFS_DEBUG, it is only advisable to use this if you
- are debugging a particular problem.
- config XFS_DEBUG
- bool "XFS Debugging support"
- depends on XFS_FS
- 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.
- config XFS_ASSERT_FATAL
- bool "XFS fatal asserts"
- default y
- depends on XFS_FS && XFS_DEBUG
- help
- Set the default DEBUG mode ASSERT failure behavior.
- Say Y here to cause DEBUG mode ASSERT failures to result in fatal
- errors that BUG() the kernel by default. If you say N, ASSERT failures
- result in warnings.
- This behavior can be modified at runtime via sysfs.
|