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config NFS_FS
tristate "NFS client support"
depends on INET && FILE_LOCKING
depends on BKL # fix as soon as lockd is done
select LOCKD
select SUNRPC
select NFS_ACL_SUPPORT if NFS_V3_ACL
help
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.
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.
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.
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 unsure, say N.
config NFS_V3
bool "NFS client support for NFS version 3"
depends on NFS_FS
help
This option enables support for version 3 of the NFS protocol
(RFC 1813) in the kernel's NFS client.
If unsure, say Y.
config NFS_V3_ACL
bool "NFS client support for the NFSv3 ACL protocol extension"
depends on NFS_V3
help
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.
config NFS_V4
bool "NFS client support for NFS version 4"
depends on NFS_FS
select SUNRPC_GSS
help
This option enables support for version 4 of the NFS protocol
(RFC 3530) in the kernel's NFS client.
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 Y.
config NFS_V4_1
bool "NFS client support for NFSv4.1 (EXPERIMENTAL)"
depends on NFS_V4 && EXPERIMENTAL
help
This option enables support for minor version 1 of the NFSv4 protocol
(draft-ietf-nfsv4-minorversion1) in the kernel's NFS client.
If unsure, say N.
config ROOT_NFS
bool "Root file system on NFS"
depends on NFS_FS=y && IP_PNP
help
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
<file:Documentation/filesystems/nfs/nfsroot.txt>.
Most people say N here.
config NFS_FSCACHE
bool "Provide NFS client caching support"
depends on NFS_FS=m && FSCACHE || NFS_FS=y && FSCACHE=y
help
Say Y here if you want NFS data to be cached locally on disc through
the general filesystem cache manager
config NFS_USE_LEGACY_DNS
bool "Use the legacy NFS DNS resolver"
depends on NFS_V4
help
The kernel now provides a method for translating a host name into an
IP address. Select Y here if you would rather use your own DNS
resolver script.
If unsure, say N
config NFS_USE_KERNEL_DNS
bool
depends on NFS_V4 && !NFS_USE_LEGACY_DNS
select DNS_RESOLVER
select KEYS
default y
config NFS_USE_NEW_IDMAPPER
bool "Use the new idmapper upcall routine"
depends on NFS_V4 && KEYS
help
Say Y here if you want NFS to use the new idmapper upcall functions.
You will need /sbin/request-key (usually provided by the keyutils
package). For details, read
<file:Documentation/filesystems/nfs/idmapper.txt>.
If you are unsure, say N.
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