blob: dbcd82126aed309026dc55f33754f8209ceaaeb5 [file] [log] [blame]
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
32config NFS_V3
33 bool "NFS client support for NFS version 3"
34 depends on NFS_FS
35 help
36 This option enables support for version 3 of the NFS protocol
37 (RFC 1813) in the kernel's NFS client.
38
39 If unsure, say Y.
40
41config NFS_V3_ACL
42 bool "NFS client support for the NFSv3 ACL protocol extension"
43 depends on NFS_V3
44 help
45 Some NFS servers support an auxiliary NFSv3 ACL protocol that
46 Sun added to Solaris but never became an official part of the
47 NFS version 3 protocol. This protocol extension allows
48 applications on NFS clients to manipulate POSIX Access Control
49 Lists on files residing on NFS servers. NFS servers enforce
50 ACLs on local files whether this protocol is available or not.
51
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
56 Most NFS servers don't support the Solaris NFSv3 ACL protocol
57 extension. You can choose N here or specify the "noacl" mount
58 option to prevent your NFS client from trying to use the NFSv3
59 ACL protocol.
60
61 If unsure, say N.
62
63config NFS_V4
Trond Myklebustb3edc2b2010-08-04 14:38:01 -040064 bool "NFS client support for NFS version 4"
65 depends on NFS_FS
Trond Myklebust827e3452010-09-12 19:57:50 -040066 select SUNRPC_GSS
Alexey Dobriyan97afe472009-01-22 11:07:41 +030067 help
68 This option enables support for version 4 of the NFS protocol
69 (RFC 3530) in the kernel's NFS client.
70
71 To mount NFS servers using NFSv4, you also need to install user
72 space programs which can be found in the Linux nfs-utils package,
73 available from http://linux-nfs.org/.
74
Trond Myklebustb3edc2b2010-08-04 14:38:01 -040075 If unsure, say Y.
Alexey Dobriyan97afe472009-01-22 11:07:41 +030076
Ricardo Labiaga1efae382009-04-01 09:21:46 -040077config NFS_V4_1
Trond Myklebust3dce9a52010-08-04 14:39:16 -040078 bool "NFS client support for NFSv4.1 (EXPERIMENTAL)"
Fred Isaman02c35fc2010-10-20 00:17:59 -040079 depends on NFS_FS && NFS_V4 && EXPERIMENTAL
Trond Myklebust9e00abc2011-07-13 19:20:49 -040080 select SUNRPC_BACKCHANNEL
Fred Isaman02c35fc2010-10-20 00:17:59 -040081 select PNFS_FILE_LAYOUT
Ricardo Labiaga1efae382009-04-01 09:21:46 -040082 help
83 This option enables support for minor version 1 of the NFSv4 protocol
Peng Tao54a33b192011-08-10 18:29:21 -040084 (RFC 5661) in the kernel's NFS client.
Ricardo Labiaga1efae382009-04-01 09:21:46 -040085
Trond Myklebust3dce9a52010-08-04 14:39:16 -040086 If unsure, say N.
Ricardo Labiaga1efae382009-04-01 09:21:46 -040087
Fred Isaman02c35fc2010-10-20 00:17:59 -040088config PNFS_FILE_LAYOUT
89 tristate
90
Fred Isaman155e7522011-07-30 20:52:39 -040091config PNFS_BLOCK
Boaz Harrosh8cf1fb2162011-08-11 14:29:25 -070092 tristate
Peng Tao54a33b192011-08-10 18:29:21 -040093 depends on NFS_FS && NFS_V4_1 && BLK_DEV_DM
Boaz Harrosh8cf1fb2162011-08-11 14:29:25 -070094 default m
Fred Isaman155e7522011-07-30 20:52:39 -040095
Benny Halevyc93407d2011-05-22 19:49:06 +030096config PNFS_OBJLAYOUT
Boaz Harrosh8cf1fb2162011-08-11 14:29:25 -070097 tristate
Benny Halevyc93407d2011-05-22 19:49:06 +030098 depends on NFS_FS && NFS_V4_1 && SCSI_OSD_ULD
Boaz Harrosh8cf1fb2162011-08-11 14:29:25 -070099 default m
Benny Halevyc93407d2011-05-22 19:49:06 +0300100
Alexey Dobriyan97afe472009-01-22 11:07:41 +0300101config ROOT_NFS
102 bool "Root file system on NFS"
103 depends on NFS_FS=y && IP_PNP
104 help
105 If you want your system to mount its root file system via NFS,
106 choose Y here. This is common practice for managing systems
107 without local permanent storage. For details, read
J. Bruce Fieldsdc7a0812009-10-27 14:41:35 -0400108 <file:Documentation/filesystems/nfs/nfsroot.txt>.
Alexey Dobriyan97afe472009-01-22 11:07:41 +0300109
110 Most people say N here.
David Howells3b9ce972009-04-03 16:42:42 +0100111
112config NFS_FSCACHE
Christian Kujau49120022010-02-26 17:25:14 +0000113 bool "Provide NFS client caching support"
David Howells3b9ce972009-04-03 16:42:42 +0100114 depends on NFS_FS=m && FSCACHE || NFS_FS=y && FSCACHE=y
115 help
116 Say Y here if you want NFS data to be cached locally on disc through
117 the general filesystem cache manager
Bryan Schumakerc2e81392010-08-11 09:37:53 +0100118
119config NFS_USE_LEGACY_DNS
120 bool "Use the legacy NFS DNS resolver"
121 depends on NFS_V4
122 help
123 The kernel now provides a method for translating a host name into an
124 IP address. Select Y here if you would rather use your own DNS
125 resolver script.
126
127 If unsure, say N
128
129config NFS_USE_KERNEL_DNS
130 bool
131 depends on NFS_V4 && !NFS_USE_LEGACY_DNS
132 select DNS_RESOLVER
Steve French3f432312010-08-12 18:16:45 +0000133 select KEYS
Bryan Schumakerc2e81392010-08-11 09:37:53 +0100134 default y
Bryan Schumaker955a8572010-09-29 15:41:49 -0400135
136config NFS_USE_NEW_IDMAPPER
137 bool "Use the new idmapper upcall routine"
138 depends on NFS_V4 && KEYS
139 help
140 Say Y here if you want NFS to use the new idmapper upcall functions.
141 You will need /sbin/request-key (usually provided by the keyutils
142 package). For details, read
143 <file:Documentation/filesystems/nfs/idmapper.txt>.
144
145 If you are unsure, say N.