2 tristate "NFS client support"
3 depends on INET && FILE_LOCKING
6 select NFS_ACL_SUPPORT if NFS_V3_ACL
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
13 To mount file systems exported by NFS servers, you also need to
14 install the user space mount.nfs command which can be found in
15 the Linux nfs-utils package, available from http://linux-nfs.org/.
16 Information about using the mount command is available in the
17 mount(8) man page. More detail about the Linux NFS client
18 implementation is available via the nfs(5) man page.
20 Below you can choose which versions of the NFS protocol are
21 available in the kernel to mount NFS servers. Support for NFS
22 version 2 (RFC 1094) is always available when NFS_FS is selected.
24 To configure a system which mounts its root file system via NFS
25 at boot time, say Y here, select "Kernel level IP
26 autoconfiguration" in the NETWORK menu, and select "Root file
27 system on NFS" below. You cannot compile this file system as a
33 bool "NFS client support for NFS version 2"
37 This option enables support for version 2 of the NFS protocol
38 (RFC 1094) in the kernel's NFS client.
43 bool "NFS client support for NFS version 3"
47 This option enables support for version 3 of the NFS protocol
48 (RFC 1813) in the kernel's NFS client.
53 bool "NFS client support for the NFSv3 ACL protocol extension"
56 Some NFS servers support an auxiliary NFSv3 ACL protocol that
57 Sun added to Solaris but never became an official part of the
58 NFS version 3 protocol. This protocol extension allows
59 applications on NFS clients to manipulate POSIX Access Control
60 Lists on files residing on NFS servers. NFS servers enforce
61 ACLs on local files whether this protocol is available or not.
63 Choose Y here if your NFS server supports the Solaris NFSv3 ACL
64 protocol extension and you want your NFS client to allow
65 applications to access and modify ACLs on files on the server.
67 Most NFS servers don't support the Solaris NFSv3 ACL protocol
68 extension. You can choose N here or specify the "noacl" mount
69 option to prevent your NFS client from trying to use the NFSv3
75 bool "NFS client support for NFS version 4"
80 This option enables support for version 4 of the NFS protocol
81 (RFC 3530) in the kernel's NFS client.
83 To mount NFS servers using NFSv4, you also need to install user
84 space programs which can be found in the Linux nfs-utils package,
85 available from http://linux-nfs.org/.
90 bool "NFS client support for NFSv4.1 (EXPERIMENTAL)"
91 depends on NFS_FS && NFS_V4 && EXPERIMENTAL
92 select SUNRPC_BACKCHANNEL
93 select PNFS_FILE_LAYOUT
95 This option enables support for minor version 1 of the NFSv4 protocol
96 (RFC 5661) in the kernel's NFS client.
100 config PNFS_FILE_LAYOUT
105 depends on NFS_FS && NFS_V4_1 && BLK_DEV_DM
108 config PNFS_OBJLAYOUT
110 depends on NFS_FS && NFS_V4_1 && SCSI_OSD_ULD
113 config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN
114 string "NFSv4.1 Implementation ID Domain"
118 This option defines the domain portion of the implementation ID that
119 may be sent in the NFS exchange_id operation. The value must be in
120 the format of a DNS domain name and should be set to the DNS domain
121 name of the distribution.
122 If the NFS client is unchanged from the upstream kernel, this
123 option should be set to the default "kernel.org".
126 bool "Root file system on NFS"
127 depends on NFS_FS=y && IP_PNP
129 If you want your system to mount its root file system via NFS,
130 choose Y here. This is common practice for managing systems
131 without local permanent storage. For details, read
132 <file:Documentation/filesystems/nfs/nfsroot.txt>.
134 Most people say N here.
137 bool "Provide NFS client caching support"
138 depends on NFS_FS=m && FSCACHE || NFS_FS=y && FSCACHE=y
140 Say Y here if you want NFS data to be cached locally on disc through
141 the general filesystem cache manager
143 config NFS_USE_LEGACY_DNS
144 bool "Use the legacy NFS DNS resolver"
147 The kernel now provides a method for translating a host name into an
148 IP address. Select Y here if you would rather use your own DNS
153 config NFS_USE_KERNEL_DNS
155 depends on NFS_V4 && !NFS_USE_LEGACY_DNS
161 depends on NFS_FS && SUNRPC_DEBUG