fs/xfs/Kconfig

   1 config XFS_FS
   2         tristate "XFS filesystem support"
   3         depends on BLOCK
   4         depends on (64BIT || LBDAF)
   5         select EXPORTFS
   6         select LIBCRC32C
   7         select FS_IOMAP
   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
  25 config XFS_QUOTA
  26         bool "XFS Quota support"
  27         depends on XFS_FS
  28         select QUOTACTL
  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
  43 config XFS_POSIX_ACL
  44         bool "XFS POSIX ACL support"
  45         depends on XFS_FS
  46         select FS_POSIX_ACL
  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
  56 config XFS_RT
  57         bool "XFS Realtime subvolume support"
  58         depends on XFS_FS
  59         help
  60           If you say Y here you will be able to mount and use XFS filesystems
  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.
  69
  70           See the xfs man page in section 5 for additional information.
  71
  72           If unsure, say N.
  73
  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
  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
 104 config XFS_DEBUG
 105         bool "XFS Debugging support"
 106         depends on XFS_FS
 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.
 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.