2008-02-14 20:58:16[permalink] [raw]
Clean up: refresh the help text for Kconfig items related to the NFS
client. Remove obsolete URLs, and make the language consistent among
Also move the ROOT_NFS config option next to the options related to the
Signed-off-by: Chuck Lever <[email protected]>
fs/Kconfig | 115 ++++++++++++++++++++++++++++++------------------------------
1 files changed, 57 insertions(+), 58 deletions(-)
diff --git a/fs/Kconfig b/fs/Kconfig
index 63b02d9..4d8260c 100644
@@ -1517,10 +1517,6 @@ config UFS_FS
The recently released UFS2 variant (used in FreeBSD 5.x) is
- If you only intend to mount files from some other Unix over the
- network using NFS, you don't need the UFS file system support (but
- you need NFS file system support obviously).
Note that this option is generally not needed for floppies, since a
good portable way to transport files and directories between unixes
(and even other operating systems) is given by the tar program ("man
@@ -1560,6 +1556,7 @@ menuconfig NETWORK_FILESYSTEMS
Say Y here to get to see options for network filesystems and
filesystem-related networking code, such as NFS daemon and
RPCSEC security modules.
This option alone does not add any kernel code.
If you say N, all options in this submenu will be skipped and
@@ -1568,76 +1565,92 @@ menuconfig NETWORK_FILESYSTEMS
- tristate "NFS file system support"
+ tristate "NFS client support"
depends on INET
select NFS_ACL_SUPPORT if NFS_V3_ACL
- If you are connected to some other (usually local) Unix computer
- (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
- on that computer (the NFS server) using the Network File Sharing
- protocol, say Y. "Mounting files" means that the client can access
- the files with usual UNIX commands as if they were sitting on the
- client's hard disk. For this to work, the server must run the
- programs nfsd and mountd (but does not need to have NFS file system
- support enabled in its kernel). NFS is explained in the Network
- Administrator's Guide, available from
- <http://www.tldp.org/docs.html#guide>, on its man page: "man
- nfs", and in the NFS-HOWTO.
- A superior but less widely used alternative to NFS is provided by
- the Coda file system; see "Coda file system support" below.
+ Choose Y here if you want to access files residing on other
+ computers using Sun's Network File System protocol. To compile
+ this file system support as a module, choose M here: the module
+ will be called nfs.
- If you say Y here, you should have said Y to TCP/IP networking also.
- This option would enlarge your kernel by about 27 KB.
+ To mount file systems exported by NFS servers, you also need to
+ install the user space mount.nfs command which can be found in
+ the Linux nfs-utils package, available from http://linux-nfs.org/.
+ Information about using the mount command is available in the
+ mount(8) man page. More detail about the Linux NFS client
+ implementation is available via the nfs(5) man page.
- To compile this file system support as a module, choose M here: the
- module will be called nfs.
+ Below you can choose which versions of the NFS protocol are
+ available in the kernel to mount NFS servers. Support for NFS
+ version 2 (RFC 1094) is always available when NFS_FS is selected.
- If you are configuring a diskless machine which will mount its root
- file system over NFS at boot time, say Y here and to "Kernel
- level IP autoconfiguration" above and to "Root file system on NFS"
- below. You cannot compile this driver as a module in this case.
- There are two packages designed for booting diskless machines over
- the net: netboot, available from
- <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
- available from <http://ftp1.sourceforge.net/etherboot/>.
+ To configure a system which mounts its root file system via NFS
+ at boot time, say Y here, select "Kernel level IP
+ autoconfiguration" in the NETWORK menu, and select "Root file
+ system on NFS" below. You cannot compile this file system as a
+ module in this case.
- If you don't know what all this is about, say N.
+ If unsure, say N.
- bool "Provide NFSv3 client support"
+ bool "NFS client support for NFS version 3"
depends on NFS_FS
- Say Y here if you want your NFS client to be able to speak version
- 3 of the NFS protocol.
+ This option enables support for version 3 of the NFS protocol
+ (RFC 1813) in the kernel's NFS client.
If unsure, say Y.
- bool "Provide client support for the NFSv3 ACL protocol extension"
+ bool "NFS client support for the NFSv3 ACL protocol extension"
depends on NFS_V3
- Implement the NFSv3 ACL protocol extension for manipulating POSIX
- Access Control Lists. The server should also be compiled with
- the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
+ Some NFS servers support an auxiliary NFSv3 ACL protocol that
+ Sun added to Solaris but never became an official part of the
+ NFS version 3 protocol. This protocol extension allows
+ applications on NFS clients to manipulate POSIX Access Control
+ Lists on files residing on NFS servers. NFS servers enforce
+ ACLs on local files whether this protocol is available or not.
+ Choose Y here if your NFS server supports the Solaris NFSv3 ACL
+ protocol extension and you want your NFS client to allow
+ applications to access and modify ACLs on files on the server.
+ Most NFS servers don't support the Solaris NFSv3 ACL protocol
+ extension. You can choose N here or specify the "noacl" mount
+ option to prevent your NFS client from trying to use the NFSv3
+ ACL protocol.
If unsure, say N.
- bool "Provide NFSv4 client support (EXPERIMENTAL)"
+ bool "NFS client support for NFS version 4 (EXPERIMENTAL)"
depends on NFS_FS && EXPERIMENTAL
- Say Y here if you want your NFS client to be able to speak the newer
- version 4 of the NFS protocol.
+ This option enables support for version 4 of the NFS protocol
+ (RFC 3530) in the kernel's NFS client.
- Note: Requires auxiliary userspace daemons which may be found on
+ To mount NFS servers using NFSv4, you also need to install user
+ space programs which can be found in the Linux nfs-utils package,
+ available from http://linux-nfs.org/.
If unsure, say N.
+ bool "Root file system on NFS"
+ depends on NFS_FS=y && IP_PNP
+ If you want your system to mount its root file system via NFS,
+ choose Y here. This is common practice for managing systems
+ without local permanent storage. For details, read
+ Most people say N here.
tristate "NFS server support"
depends on INET
@@ -1720,20 +1733,6 @@ config NFSD_V4
If unsure, say N.
- bool "Root file system on NFS"
- depends on NFS_FS=y && IP_PNP
- If you want your Linux box to mount its whole root file system (the
- one containing the directory /) from some other computer over the
- net via NFS (presumably because your box doesn't have a hard disk),
- say Y. Read <file:Documentation/nfsroot.txt> for details. It is
- likely that in this case, you also want to say Y to "Kernel level IP
- autoconfiguration" so that your box can discover its network address
- at boot time.
- Most people say N here.