1 # SPDX-License-Identifier: GPL-2.0-only <<
2 config NFS_FS 1 config NFS_FS
3 tristate "NFS client support" 2 tristate "NFS client support"
4 depends on INET && FILE_LOCKING && MUL 3 depends on INET && FILE_LOCKING && MULTIUSER
5 select LOCKD 4 select LOCKD
6 select SUNRPC 5 select SUNRPC
7 select NFS_COMMON <<
8 select NFS_ACL_SUPPORT if NFS_V3_ACL 6 select NFS_ACL_SUPPORT if NFS_V3_ACL
9 help 7 help
10 Choose Y here if you want to access 8 Choose Y here if you want to access files residing on other
11 computers using Sun's Network File S 9 computers using Sun's Network File System protocol. To compile
12 this file system support as a module 10 this file system support as a module, choose M here: the module
13 will be called nfs. 11 will be called nfs.
14 12
15 To mount file systems exported by NF 13 To mount file systems exported by NFS servers, you also need to
16 install the user space mount.nfs com 14 install the user space mount.nfs command which can be found in
17 the Linux nfs-utils package, availab 15 the Linux nfs-utils package, available from http://linux-nfs.org/.
18 Information about using the mount co 16 Information about using the mount command is available in the
19 mount(8) man page. More detail abou 17 mount(8) man page. More detail about the Linux NFS client
20 implementation is available via the 18 implementation is available via the nfs(5) man page.
21 19
22 Below you can choose which versions 20 Below you can choose which versions of the NFS protocol are
23 available in the kernel to mount NFS 21 available in the kernel to mount NFS servers. Support for NFS
24 version 2 (RFC 1094) is always avail 22 version 2 (RFC 1094) is always available when NFS_FS is selected.
25 23
26 To configure a system which mounts i 24 To configure a system which mounts its root file system via NFS
27 at boot time, say Y here, select "Ke 25 at boot time, say Y here, select "Kernel level IP
28 autoconfiguration" in the NETWORK me 26 autoconfiguration" in the NETWORK menu, and select "Root file
29 system on NFS" below. You cannot co 27 system on NFS" below. You cannot compile this file system as a
30 module in this case. 28 module in this case.
31 29
32 If unsure, say N. 30 If unsure, say N.
33 31
34 config NFS_V2 32 config NFS_V2
35 tristate "NFS client support for NFS v 33 tristate "NFS client support for NFS version 2"
36 depends on NFS_FS 34 depends on NFS_FS
37 default n !! 35 default y
38 help 36 help
39 This option enables support for vers 37 This option enables support for version 2 of the NFS protocol
40 (RFC 1094) in the kernel's NFS clien 38 (RFC 1094) in the kernel's NFS client.
41 39
42 If unsure, say N. !! 40 If unsure, say Y.
43 41
44 config NFS_V3 42 config NFS_V3
45 tristate "NFS client support for NFS v 43 tristate "NFS client support for NFS version 3"
46 depends on NFS_FS 44 depends on NFS_FS
47 default y 45 default y
48 help 46 help
49 This option enables support for vers 47 This option enables support for version 3 of the NFS protocol
50 (RFC 1813) in the kernel's NFS clien 48 (RFC 1813) in the kernel's NFS client.
51 49
52 If unsure, say Y. 50 If unsure, say Y.
53 51
54 config NFS_V3_ACL 52 config NFS_V3_ACL
55 bool "NFS client support for the NFSv3 53 bool "NFS client support for the NFSv3 ACL protocol extension"
56 depends on NFS_V3 54 depends on NFS_V3
57 help 55 help
58 Some NFS servers support an auxiliar 56 Some NFS servers support an auxiliary NFSv3 ACL protocol that
59 Sun added to Solaris but never becam 57 Sun added to Solaris but never became an official part of the
60 NFS version 3 protocol. This protoc 58 NFS version 3 protocol. This protocol extension allows
61 applications on NFS clients to manip 59 applications on NFS clients to manipulate POSIX Access Control
62 Lists on files residing on NFS serve 60 Lists on files residing on NFS servers. NFS servers enforce
63 ACLs on local files whether this pro 61 ACLs on local files whether this protocol is available or not.
64 62
65 Choose Y here if your NFS server sup 63 Choose Y here if your NFS server supports the Solaris NFSv3 ACL
66 protocol extension and you want your 64 protocol extension and you want your NFS client to allow
67 applications to access and modify AC 65 applications to access and modify ACLs on files on the server.
68 66
69 Most NFS servers don't support the S 67 Most NFS servers don't support the Solaris NFSv3 ACL protocol
70 extension. You can choose N here or 68 extension. You can choose N here or specify the "noacl" mount
71 option to prevent your NFS client fr 69 option to prevent your NFS client from trying to use the NFSv3
72 ACL protocol. 70 ACL protocol.
73 71
74 If unsure, say N. 72 If unsure, say N.
75 73
76 config NFS_V4 74 config NFS_V4
77 tristate "NFS client support for NFS v 75 tristate "NFS client support for NFS version 4"
78 depends on NFS_FS 76 depends on NFS_FS
>> 77 select SUNRPC_GSS
79 select KEYS 78 select KEYS
80 help 79 help
81 This option enables support for vers 80 This option enables support for version 4 of the NFS protocol
82 (RFC 3530) in the kernel's NFS clien 81 (RFC 3530) in the kernel's NFS client.
83 82
84 To mount NFS servers using NFSv4, yo 83 To mount NFS servers using NFSv4, you also need to install user
85 space programs which can be found in 84 space programs which can be found in the Linux nfs-utils package,
86 available from http://linux-nfs.org/ 85 available from http://linux-nfs.org/.
87 86
88 If unsure, say Y. 87 If unsure, say Y.
89 88
90 config NFS_SWAP 89 config NFS_SWAP
91 bool "Provide swap over NFS support" 90 bool "Provide swap over NFS support"
92 default n 91 default n
93 depends on NFS_FS && SWAP 92 depends on NFS_FS && SWAP
94 select SUNRPC_SWAP 93 select SUNRPC_SWAP
95 help 94 help
96 This option enables swapon to work o 95 This option enables swapon to work on files located on NFS mounts.
97 96
98 config NFS_V4_1 97 config NFS_V4_1
99 bool "NFS client support for NFSv4.1" 98 bool "NFS client support for NFSv4.1"
100 depends on NFS_V4 99 depends on NFS_V4
101 select SUNRPC_BACKCHANNEL 100 select SUNRPC_BACKCHANNEL
102 help 101 help
103 This option enables support for mino 102 This option enables support for minor version 1 of the NFSv4 protocol
104 (RFC 5661) in the kernel's NFS clien 103 (RFC 5661) in the kernel's NFS client.
105 104
106 If unsure, say N. 105 If unsure, say N.
107 106
108 config NFS_V4_2 107 config NFS_V4_2
109 bool "NFS client support for NFSv4.2" 108 bool "NFS client support for NFSv4.2"
110 depends on NFS_V4_1 109 depends on NFS_V4_1
111 help 110 help
112 This option enables support for mino 111 This option enables support for minor version 2 of the NFSv4 protocol
113 in the kernel's NFS client. 112 in the kernel's NFS client.
114 113
115 If unsure, say N. 114 If unsure, say N.
116 115
117 config PNFS_FILE_LAYOUT 116 config PNFS_FILE_LAYOUT
118 tristate 117 tristate
119 depends on NFS_V4_1 118 depends on NFS_V4_1
120 default NFS_V4 119 default NFS_V4
121 120
122 config PNFS_BLOCK 121 config PNFS_BLOCK
123 tristate 122 tristate
124 depends on NFS_V4_1 && BLK_DEV_DM 123 depends on NFS_V4_1 && BLK_DEV_DM
>> 124 depends on 64BIT || LBDAF
>> 125 default NFS_V4
>> 126
>> 127 config PNFS_OBJLAYOUT
>> 128 tristate
>> 129 depends on NFS_V4_1 && SCSI_OSD_ULD
125 default NFS_V4 130 default NFS_V4
126 131
127 config PNFS_FLEXFILE_LAYOUT 132 config PNFS_FLEXFILE_LAYOUT
128 tristate 133 tristate
129 depends on NFS_V4_1 !! 134 depends on NFS_V4_1 && NFS_V3
130 default NFS_V4 135 default NFS_V4
131 136
132 config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN 137 config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN
133 string "NFSv4.1 Implementation ID Doma 138 string "NFSv4.1 Implementation ID Domain"
134 depends on NFS_V4_1 139 depends on NFS_V4_1
135 default "kernel.org" 140 default "kernel.org"
136 help 141 help
137 This option defines the domain porti 142 This option defines the domain portion of the implementation ID that
138 may be sent in the NFS exchange_id o 143 may be sent in the NFS exchange_id operation. The value must be in
139 the format of a DNS domain name and 144 the format of a DNS domain name and should be set to the DNS domain
140 name of the distribution. 145 name of the distribution.
141 If the NFS client is unchanged from 146 If the NFS client is unchanged from the upstream kernel, this
142 option should be set to the default 147 option should be set to the default "kernel.org".
143 148
144 config NFS_V4_1_MIGRATION 149 config NFS_V4_1_MIGRATION
145 bool "NFSv4.1 client support for migra 150 bool "NFSv4.1 client support for migration"
146 depends on NFS_V4_1 151 depends on NFS_V4_1
147 default n 152 default n
148 help 153 help
149 This option makes the NFS client adv 154 This option makes the NFS client advertise to NFSv4.1 servers that
150 it can support NFSv4 migration. 155 it can support NFSv4 migration.
151 156
152 The NFSv4.1 pieces of the Linux NFSv 157 The NFSv4.1 pieces of the Linux NFSv4 migration implementation are
153 still experimental. If you are not 158 still experimental. If you are not an NFSv4 developer, say N here.
154 159
155 config NFS_V4_SECURITY_LABEL 160 config NFS_V4_SECURITY_LABEL
156 bool 161 bool
157 depends on NFS_V4_2 && SECURITY 162 depends on NFS_V4_2 && SECURITY
158 default y 163 default y
159 164
160 config ROOT_NFS 165 config ROOT_NFS
161 bool "Root file system on NFS" 166 bool "Root file system on NFS"
162 depends on NFS_FS=y && IP_PNP 167 depends on NFS_FS=y && IP_PNP
163 help 168 help
164 If you want your system to mount its 169 If you want your system to mount its root file system via NFS,
165 choose Y here. This is common pract 170 choose Y here. This is common practice for managing systems
166 without local permanent storage. Fo 171 without local permanent storage. For details, read
167 <file:Documentation/admin-guide/nfs/ !! 172 <file:Documentation/filesystems/nfs/nfsroot.txt>.
168 173
169 Most people say N here. 174 Most people say N here.
170 175
171 config NFS_FSCACHE 176 config NFS_FSCACHE
172 bool "Provide NFS client caching suppo 177 bool "Provide NFS client caching support"
173 depends on NFS_FS=m && NETFS_SUPPORT | !! 178 depends on NFS_FS=m && FSCACHE || NFS_FS=y && FSCACHE=y
174 select FSCACHE <<
175 help 179 help
176 Say Y here if you want NFS data to b 180 Say Y here if you want NFS data to be cached locally on disc through
177 the general filesystem cache manager 181 the general filesystem cache manager
178 182
179 config NFS_USE_LEGACY_DNS 183 config NFS_USE_LEGACY_DNS
180 bool "Use the legacy NFS DNS resolver" 184 bool "Use the legacy NFS DNS resolver"
181 depends on NFS_V4 185 depends on NFS_V4
182 help 186 help
183 The kernel now provides a method for 187 The kernel now provides a method for translating a host name into an
184 IP address. Select Y here if you wo 188 IP address. Select Y here if you would rather use your own DNS
185 resolver script. 189 resolver script.
186 190
187 If unsure, say N 191 If unsure, say N
188 192
189 config NFS_USE_KERNEL_DNS 193 config NFS_USE_KERNEL_DNS
190 bool 194 bool
191 depends on NFS_V4 && !NFS_USE_LEGACY_D 195 depends on NFS_V4 && !NFS_USE_LEGACY_DNS
192 select DNS_RESOLVER 196 select DNS_RESOLVER
193 default y 197 default y
194 198
195 config NFS_DEBUG 199 config NFS_DEBUG
196 bool 200 bool
197 depends on NFS_FS && SUNRPC_DEBUG 201 depends on NFS_FS && SUNRPC_DEBUG
198 select CRC32 202 select CRC32
199 default y 203 default y
200 <<
201 config NFS_DISABLE_UDP_SUPPORT <<
202 bool "NFS: Disable NFS UDP protocol sup <<
203 depends on NFS_FS <<
204 default y <<
205 help <<
206 Choose Y here to disable the use of N <<
207 on modern networks (1Gb+) can lead to <<
208 fragmentation during high loads. <<
209 <<
210 config NFS_V4_2_READ_PLUS <<
211 bool "NFS: Enable support for the NFSv <<
212 depends on NFS_V4_2 <<
213 default y <<
214 help <<
215 Choose Y here to enable use of the NF <<
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.