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Alexey Dobriyan97afe472009-01-22 11:07:41 +03001config NFS_FS
2 tristate "NFS client support"
Randy Dunlapdd4dc822009-05-12 13:28:09 -07003 depends on INET && FILE_LOCKING
Alexey Dobriyan97afe472009-01-22 11:07:41 +03004 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
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.
19
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.
23
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
28 module in this case.
29
30 If unsure, say N.
31
Bryan Schumaker2ba68002012-05-10 16:47:19 -040032config NFS_V2
Bryan Schumakerddda8e02012-07-30 16:05:23 -040033 tristate "NFS client support for NFS version 2"
Bryan Schumaker2ba68002012-05-10 16:47:19 -040034 depends on NFS_FS
35 default y
36 help
37 This option enables support for version 2 of the NFS protocol
38 (RFC 1094) in the kernel's NFS client.
39
40 If unsure, say Y.
41
Alexey Dobriyan97afe472009-01-22 11:07:41 +030042config NFS_V3
Bryan Schumaker1c606fb2012-07-30 16:05:24 -040043 tristate "NFS client support for NFS version 3"
Alexey Dobriyan97afe472009-01-22 11:07:41 +030044 depends on NFS_FS
Bryan Schumaker981f9fa2012-05-10 16:47:20 -040045 default y
Alexey Dobriyan97afe472009-01-22 11:07:41 +030046 help
47 This option enables support for version 3 of the NFS protocol
48 (RFC 1813) in the kernel's NFS client.
49
50 If unsure, say Y.
51
52config NFS_V3_ACL
53 bool "NFS client support for the NFSv3 ACL protocol extension"
54 depends on NFS_V3
55 help
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.
62
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.
66
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
70 ACL protocol.
71
72 If unsure, say N.
73
74config NFS_V4
Bryan Schumaker89d77c82012-07-30 16:05:25 -040075 tristate "NFS client support for NFS version 4"
Trond Myklebustb3edc2b2010-08-04 14:38:01 -040076 depends on NFS_FS
Trond Myklebust827e3452010-09-12 19:57:50 -040077 select SUNRPC_GSS
Trond Myklebuste3da8702012-02-08 13:21:38 -050078 select KEYS
Alexey Dobriyan97afe472009-01-22 11:07:41 +030079 help
80 This option enables support for version 4 of the NFS protocol
81 (RFC 3530) in the kernel's NFS client.
82
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/.
86
Trond Myklebustb3edc2b2010-08-04 14:38:01 -040087 If unsure, say Y.
Alexey Dobriyan97afe472009-01-22 11:07:41 +030088
Mel Gormana564b8f2012-07-31 16:45:12 -070089config NFS_SWAP
90 bool "Provide swap over NFS support"
91 default n
92 depends on NFS_FS
93 select SUNRPC_SWAP
94 help
95 This option enables swapon to work on files located on NFS mounts.
96
Ricardo Labiaga1efae382009-04-01 09:21:46 -040097config NFS_V4_1
Trond Myklebust3dce9a52010-08-04 14:39:16 -040098 bool "NFS client support for NFSv4.1 (EXPERIMENTAL)"
Trond Myklebuste3074502012-05-21 15:30:41 -040099 depends on NFS_V4 && EXPERIMENTAL
Trond Myklebust9e00abc2011-07-13 19:20:49 -0400100 select SUNRPC_BACKCHANNEL
Ricardo Labiaga1efae382009-04-01 09:21:46 -0400101 help
102 This option enables support for minor version 1 of the NFSv4 protocol
Peng Tao54a33b192011-08-10 18:29:21 -0400103 (RFC 5661) in the kernel's NFS client.
Ricardo Labiaga1efae382009-04-01 09:21:46 -0400104
Trond Myklebust3dce9a52010-08-04 14:39:16 -0400105 If unsure, say N.
Ricardo Labiaga1efae382009-04-01 09:21:46 -0400106
Fred Isaman02c35fc2010-10-20 00:17:59 -0400107config PNFS_FILE_LAYOUT
108 tristate
Trond Myklebuste3074502012-05-21 15:30:41 -0400109 depends on NFS_V4_1
110 default m
Fred Isaman02c35fc2010-10-20 00:17:59 -0400111
Fred Isaman155e7522011-07-30 20:52:39 -0400112config PNFS_BLOCK
Boaz Harrosh8cf1fb2162011-08-11 14:29:25 -0700113 tristate
Trond Myklebuste3074502012-05-21 15:30:41 -0400114 depends on NFS_V4_1 && BLK_DEV_DM
Boaz Harrosh8cf1fb2162011-08-11 14:29:25 -0700115 default m
Fred Isaman155e7522011-07-30 20:52:39 -0400116
Benny Halevyc93407d2011-05-22 19:49:06 +0300117config PNFS_OBJLAYOUT
Boaz Harrosh8cf1fb2162011-08-11 14:29:25 -0700118 tristate
Trond Myklebuste3074502012-05-21 15:30:41 -0400119 depends on NFS_V4_1 && SCSI_OSD_ULD
Boaz Harrosh8cf1fb2162011-08-11 14:29:25 -0700120 default m
Benny Halevyc93407d2011-05-22 19:49:06 +0300121
Weston Andros Adamsondb8ac8b2012-02-17 15:20:24 -0500122config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN
123 string "NFSv4.1 Implementation ID Domain"
124 depends on NFS_V4_1
125 default "kernel.org"
126 help
127 This option defines the domain portion of the implementation ID that
128 may be sent in the NFS exchange_id operation. The value must be in
129 the format of a DNS domain name and should be set to the DNS domain
130 name of the distribution.
131 If the NFS client is unchanged from the upstream kernel, this
132 option should be set to the default "kernel.org".
133
Alexey Dobriyan97afe472009-01-22 11:07:41 +0300134config ROOT_NFS
135 bool "Root file system on NFS"
136 depends on NFS_FS=y && IP_PNP
137 help
138 If you want your system to mount its root file system via NFS,
139 choose Y here. This is common practice for managing systems
140 without local permanent storage. For details, read
J. Bruce Fieldsdc7a0812009-10-27 14:41:35 -0400141 <file:Documentation/filesystems/nfs/nfsroot.txt>.
Alexey Dobriyan97afe472009-01-22 11:07:41 +0300142
143 Most people say N here.
David Howells3b9ce972009-04-03 16:42:42 +0100144
145config NFS_FSCACHE
Christian Kujau49120022010-02-26 17:25:14 +0000146 bool "Provide NFS client caching support"
David Howells3b9ce972009-04-03 16:42:42 +0100147 depends on NFS_FS=m && FSCACHE || NFS_FS=y && FSCACHE=y
148 help
149 Say Y here if you want NFS data to be cached locally on disc through
150 the general filesystem cache manager
Bryan Schumakerc2e81392010-08-11 09:37:53 +0100151
152config NFS_USE_LEGACY_DNS
153 bool "Use the legacy NFS DNS resolver"
154 depends on NFS_V4
155 help
156 The kernel now provides a method for translating a host name into an
157 IP address. Select Y here if you would rather use your own DNS
158 resolver script.
159
160 If unsure, say N
161
162config NFS_USE_KERNEL_DNS
163 bool
164 depends on NFS_V4 && !NFS_USE_LEGACY_DNS
165 select DNS_RESOLVER
166 default y
Trond Myklebuste27d3592012-03-18 14:07:42 -0400167
168config NFS_DEBUG
169 bool
170 depends on NFS_FS && SUNRPC_DEBUG
171 select CRC32
172 default y