Kconfig 5.0 KB

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  1. config NFS_FS
  2. tristate "NFS client support"
  3. depends on INET && FILE_LOCKING
  4. select LOCKD
  5. select SUNRPC
  6. select NFS_ACL_SUPPORT if NFS_V3_ACL
  7. help
  8. Choose Y here if you want to access files residing on other
  9. computers using Sun's Network File System protocol. To compile
  10. this file system support as a module, choose M here: the module
  11. will be called nfs.
  12. To mount file systems exported by NFS servers, you also need to
  13. install the user space mount.nfs command which can be found in
  14. the Linux nfs-utils package, available from http://linux-nfs.org/.
  15. Information about using the mount command is available in the
  16. mount(8) man page. More detail about the Linux NFS client
  17. implementation is available via the nfs(5) man page.
  18. Below you can choose which versions of the NFS protocol are
  19. available in the kernel to mount NFS servers. Support for NFS
  20. version 2 (RFC 1094) is always available when NFS_FS is selected.
  21. To configure a system which mounts its root file system via NFS
  22. at boot time, say Y here, select "Kernel level IP
  23. autoconfiguration" in the NETWORK menu, and select "Root file
  24. system on NFS" below. You cannot compile this file system as a
  25. module in this case.
  26. If unsure, say N.
  27. config NFS_V2
  28. bool "NFS client support for NFS version 2"
  29. depends on NFS_FS
  30. default y
  31. help
  32. This option enables support for version 2 of the NFS protocol
  33. (RFC 1094) in the kernel's NFS client.
  34. If unsure, say Y.
  35. config NFS_V3
  36. bool "NFS client support for NFS version 3"
  37. depends on NFS_FS
  38. help
  39. This option enables support for version 3 of the NFS protocol
  40. (RFC 1813) in the kernel's NFS client.
  41. If unsure, say Y.
  42. config NFS_V3_ACL
  43. bool "NFS client support for the NFSv3 ACL protocol extension"
  44. depends on NFS_V3
  45. help
  46. Some NFS servers support an auxiliary NFSv3 ACL protocol that
  47. Sun added to Solaris but never became an official part of the
  48. NFS version 3 protocol. This protocol extension allows
  49. applications on NFS clients to manipulate POSIX Access Control
  50. Lists on files residing on NFS servers. NFS servers enforce
  51. ACLs on local files whether this protocol is available or not.
  52. Choose Y here if your NFS server supports the Solaris NFSv3 ACL
  53. protocol extension and you want your NFS client to allow
  54. applications to access and modify ACLs on files on the server.
  55. Most NFS servers don't support the Solaris NFSv3 ACL protocol
  56. extension. You can choose N here or specify the "noacl" mount
  57. option to prevent your NFS client from trying to use the NFSv3
  58. ACL protocol.
  59. If unsure, say N.
  60. config NFS_V4
  61. bool "NFS client support for NFS version 4"
  62. depends on NFS_FS
  63. select SUNRPC_GSS
  64. select KEYS
  65. help
  66. This option enables support for version 4 of the NFS protocol
  67. (RFC 3530) in the kernel's NFS client.
  68. To mount NFS servers using NFSv4, you also need to install user
  69. space programs which can be found in the Linux nfs-utils package,
  70. available from http://linux-nfs.org/.
  71. If unsure, say Y.
  72. config NFS_V4_1
  73. bool "NFS client support for NFSv4.1 (EXPERIMENTAL)"
  74. depends on NFS_FS && NFS_V4 && EXPERIMENTAL
  75. select SUNRPC_BACKCHANNEL
  76. select PNFS_FILE_LAYOUT
  77. help
  78. This option enables support for minor version 1 of the NFSv4 protocol
  79. (RFC 5661) in the kernel's NFS client.
  80. If unsure, say N.
  81. config PNFS_FILE_LAYOUT
  82. tristate
  83. config PNFS_BLOCK
  84. tristate
  85. depends on NFS_FS && NFS_V4_1 && BLK_DEV_DM
  86. default m
  87. config PNFS_OBJLAYOUT
  88. tristate
  89. depends on NFS_FS && NFS_V4_1 && SCSI_OSD_ULD
  90. default m
  91. config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN
  92. string "NFSv4.1 Implementation ID Domain"
  93. depends on NFS_V4_1
  94. default "kernel.org"
  95. help
  96. This option defines the domain portion of the implementation ID that
  97. may be sent in the NFS exchange_id operation. The value must be in
  98. the format of a DNS domain name and should be set to the DNS domain
  99. name of the distribution.
  100. If the NFS client is unchanged from the upstream kernel, this
  101. option should be set to the default "kernel.org".
  102. config ROOT_NFS
  103. bool "Root file system on NFS"
  104. depends on NFS_FS=y && IP_PNP
  105. help
  106. If you want your system to mount its root file system via NFS,
  107. choose Y here. This is common practice for managing systems
  108. without local permanent storage. For details, read
  109. <file:Documentation/filesystems/nfs/nfsroot.txt>.
  110. Most people say N here.
  111. config NFS_FSCACHE
  112. bool "Provide NFS client caching support"
  113. depends on NFS_FS=m && FSCACHE || NFS_FS=y && FSCACHE=y
  114. help
  115. Say Y here if you want NFS data to be cached locally on disc through
  116. the general filesystem cache manager
  117. config NFS_USE_LEGACY_DNS
  118. bool "Use the legacy NFS DNS resolver"
  119. depends on NFS_V4
  120. help
  121. The kernel now provides a method for translating a host name into an
  122. IP address. Select Y here if you would rather use your own DNS
  123. resolver script.
  124. If unsure, say N
  125. config NFS_USE_KERNEL_DNS
  126. bool
  127. depends on NFS_V4 && !NFS_USE_LEGACY_DNS
  128. select DNS_RESOLVER
  129. default y
  130. config NFS_DEBUG
  131. bool
  132. depends on NFS_FS && SUNRPC_DEBUG
  133. select CRC32
  134. default y