Loading...
1# SPDX-License-Identifier: GPL-2.0-only
2config NFS_FS
3 tristate "NFS client support"
4 depends on INET && FILE_LOCKING && MULTIUSER
5 select LOCKD
6 select SUNRPC
7 select NFS_ACL_SUPPORT if NFS_V3_ACL
8 help
9 Choose Y here if you want to access files residing on other
10 computers using Sun's Network File System protocol. To compile
11 this file system support as a module, choose M here: the module
12 will be called nfs.
13
14 To mount file systems exported by NFS servers, you also need to
15 install the user space mount.nfs command which can be found in
16 the Linux nfs-utils package, available from http://linux-nfs.org/.
17 Information about using the mount command is available in the
18 mount(8) man page. More detail about the Linux NFS client
19 implementation is available via the nfs(5) man page.
20
21 Below you can choose which versions of the NFS protocol are
22 available in the kernel to mount NFS servers. Support for NFS
23 version 2 (RFC 1094) is always available when NFS_FS is selected.
24
25 To configure a system which mounts its root file system via NFS
26 at boot time, say Y here, select "Kernel level IP
27 autoconfiguration" in the NETWORK menu, and select "Root file
28 system on NFS" below. You cannot compile this file system as a
29 module in this case.
30
31 If unsure, say N.
32
33config NFS_V2
34 tristate "NFS client support for NFS version 2"
35 depends on NFS_FS
36 default y
37 help
38 This option enables support for version 2 of the NFS protocol
39 (RFC 1094) in the kernel's NFS client.
40
41 If unsure, say Y.
42
43config NFS_V3
44 tristate "NFS client support for NFS version 3"
45 depends on NFS_FS
46 default y
47 help
48 This option enables support for version 3 of the NFS protocol
49 (RFC 1813) in the kernel's NFS client.
50
51 If unsure, say Y.
52
53config NFS_V3_ACL
54 bool "NFS client support for the NFSv3 ACL protocol extension"
55 depends on NFS_V3
56 help
57 Some NFS servers support an auxiliary NFSv3 ACL protocol that
58 Sun added to Solaris but never became an official part of the
59 NFS version 3 protocol. This protocol extension allows
60 applications on NFS clients to manipulate POSIX Access Control
61 Lists on files residing on NFS servers. NFS servers enforce
62 ACLs on local files whether this protocol is available or not.
63
64 Choose Y here if your NFS server supports the Solaris NFSv3 ACL
65 protocol extension and you want your NFS client to allow
66 applications to access and modify ACLs on files on the server.
67
68 Most NFS servers don't support the Solaris NFSv3 ACL protocol
69 extension. You can choose N here or specify the "noacl" mount
70 option to prevent your NFS client from trying to use the NFSv3
71 ACL protocol.
72
73 If unsure, say N.
74
75config NFS_V4
76 tristate "NFS client support for NFS version 4"
77 depends on NFS_FS
78 select KEYS
79 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
87 If unsure, say Y.
88
89config NFS_SWAP
90 bool "Provide swap over NFS support"
91 default n
92 depends on NFS_FS && SWAP
93 select SUNRPC_SWAP
94 help
95 This option enables swapon to work on files located on NFS mounts.
96
97config NFS_V4_1
98 bool "NFS client support for NFSv4.1"
99 depends on NFS_V4
100 select SUNRPC_BACKCHANNEL
101 help
102 This option enables support for minor version 1 of the NFSv4 protocol
103 (RFC 5661) in the kernel's NFS client.
104
105 If unsure, say N.
106
107config NFS_V4_2
108 bool "NFS client support for NFSv4.2"
109 depends on NFS_V4_1
110 help
111 This option enables support for minor version 2 of the NFSv4 protocol
112 in the kernel's NFS client.
113
114 If unsure, say N.
115
116config PNFS_FILE_LAYOUT
117 tristate
118 depends on NFS_V4_1
119 default NFS_V4
120
121config PNFS_BLOCK
122 tristate
123 depends on NFS_V4_1 && BLK_DEV_DM
124 default NFS_V4
125
126config PNFS_FLEXFILE_LAYOUT
127 tristate
128 depends on NFS_V4_1
129 default NFS_V4
130
131config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN
132 string "NFSv4.1 Implementation ID Domain"
133 depends on NFS_V4_1
134 default "kernel.org"
135 help
136 This option defines the domain portion of the implementation ID that
137 may be sent in the NFS exchange_id operation. The value must be in
138 the format of a DNS domain name and should be set to the DNS domain
139 name of the distribution.
140 If the NFS client is unchanged from the upstream kernel, this
141 option should be set to the default "kernel.org".
142
143config NFS_V4_1_MIGRATION
144 bool "NFSv4.1 client support for migration"
145 depends on NFS_V4_1
146 default n
147 help
148 This option makes the NFS client advertise to NFSv4.1 servers that
149 it can support NFSv4 migration.
150
151 The NFSv4.1 pieces of the Linux NFSv4 migration implementation are
152 still experimental. If you are not an NFSv4 developer, say N here.
153
154config NFS_V4_SECURITY_LABEL
155 bool
156 depends on NFS_V4_2 && SECURITY
157 default y
158
159config ROOT_NFS
160 bool "Root file system on NFS"
161 depends on NFS_FS=y && IP_PNP
162 help
163 If you want your system to mount its root file system via NFS,
164 choose Y here. This is common practice for managing systems
165 without local permanent storage. For details, read
166 <file:Documentation/admin-guide/nfs/nfsroot.rst>.
167
168 Most people say N here.
169
170config NFS_FSCACHE
171 bool "Provide NFS client caching support"
172 depends on NFS_FS=m && NETFS_SUPPORT || NFS_FS=y && NETFS_SUPPORT=y
173 select FSCACHE
174 help
175 Say Y here if you want NFS data to be cached locally on disc through
176 the general filesystem cache manager
177
178config NFS_USE_LEGACY_DNS
179 bool "Use the legacy NFS DNS resolver"
180 depends on NFS_V4
181 help
182 The kernel now provides a method for translating a host name into an
183 IP address. Select Y here if you would rather use your own DNS
184 resolver script.
185
186 If unsure, say N
187
188config NFS_USE_KERNEL_DNS
189 bool
190 depends on NFS_V4 && !NFS_USE_LEGACY_DNS
191 select DNS_RESOLVER
192 default y
193
194config NFS_DEBUG
195 bool
196 depends on NFS_FS && SUNRPC_DEBUG
197 select CRC32
198 default y
199
200config NFS_DISABLE_UDP_SUPPORT
201 bool "NFS: Disable NFS UDP protocol support"
202 depends on NFS_FS
203 default y
204 help
205 Choose Y here to disable the use of NFS over UDP. NFS over UDP
206 on modern networks (1Gb+) can lead to data corruption caused by
207 fragmentation during high loads.
208
209config NFS_V4_2_READ_PLUS
210 bool "NFS: Enable support for the NFSv4.2 READ_PLUS operation"
211 depends on NFS_V4_2
212 default y
213 help
214 Choose Y here to enable use of the NFS v4.2 READ_PLUS operation.
1# SPDX-License-Identifier: GPL-2.0-only
2config NFS_FS
3 tristate "NFS client support"
4 depends on INET && FILE_LOCKING && MULTIUSER
5 select LOCKD
6 select SUNRPC
7 select NFS_COMMON
8 select NFS_ACL_SUPPORT if NFS_V3_ACL
9 help
10 Choose Y here if you want to access files residing on other
11 computers using Sun's Network File System protocol. To compile
12 this file system support as a module, choose M here: the module
13 will be called nfs.
14
15 To mount file systems exported by NFS servers, you also need to
16 install the user space mount.nfs command which can be found in
17 the Linux nfs-utils package, available from http://linux-nfs.org/.
18 Information about using the mount command is available in the
19 mount(8) man page. More detail about the Linux NFS client
20 implementation is available via the nfs(5) man page.
21
22 Below you can choose which versions of the NFS protocol are
23 available in the kernel to mount NFS servers. Support for NFS
24 version 2 (RFC 1094) is always available when NFS_FS is selected.
25
26 To configure a system which mounts its root file system via NFS
27 at boot time, say Y here, select "Kernel level IP
28 autoconfiguration" in the NETWORK menu, and select "Root file
29 system on NFS" below. You cannot compile this file system as a
30 module in this case.
31
32 If unsure, say N.
33
34config NFS_V2
35 tristate "NFS client support for NFS version 2"
36 depends on NFS_FS
37 default n
38 help
39 This option enables support for version 2 of the NFS protocol
40 (RFC 1094) in the kernel's NFS client.
41
42 If unsure, say N.
43
44config NFS_V3
45 tristate "NFS client support for NFS version 3"
46 depends on NFS_FS
47 default y
48 help
49 This option enables support for version 3 of the NFS protocol
50 (RFC 1813) in the kernel's NFS client.
51
52 If unsure, say Y.
53
54config NFS_V3_ACL
55 bool "NFS client support for the NFSv3 ACL protocol extension"
56 depends on NFS_V3
57 help
58 Some NFS servers support an auxiliary NFSv3 ACL protocol that
59 Sun added to Solaris but never became an official part of the
60 NFS version 3 protocol. This protocol extension allows
61 applications on NFS clients to manipulate POSIX Access Control
62 Lists on files residing on NFS servers. NFS servers enforce
63 ACLs on local files whether this protocol is available or not.
64
65 Choose Y here if your NFS server supports the Solaris NFSv3 ACL
66 protocol extension and you want your NFS client to allow
67 applications to access and modify ACLs on files on the server.
68
69 Most NFS servers don't support the Solaris NFSv3 ACL protocol
70 extension. You can choose N here or specify the "noacl" mount
71 option to prevent your NFS client from trying to use the NFSv3
72 ACL protocol.
73
74 If unsure, say N.
75
76config NFS_V4
77 tristate "NFS client support for NFS version 4"
78 depends on NFS_FS
79 select KEYS
80 help
81 This option enables support for version 4 of the NFS protocol
82 (RFC 3530) in the kernel's NFS client.
83
84 To mount NFS servers using NFSv4, you also need to install user
85 space programs which can be found in the Linux nfs-utils package,
86 available from http://linux-nfs.org/.
87
88 If unsure, say Y.
89
90config NFS_SWAP
91 bool "Provide swap over NFS support"
92 default n
93 depends on NFS_FS && SWAP
94 select SUNRPC_SWAP
95 help
96 This option enables swapon to work on files located on NFS mounts.
97
98config NFS_V4_1
99 bool "NFS client support for NFSv4.1"
100 depends on NFS_V4
101 select SUNRPC_BACKCHANNEL
102 help
103 This option enables support for minor version 1 of the NFSv4 protocol
104 (RFC 5661) in the kernel's NFS client.
105
106 If unsure, say N.
107
108config NFS_V4_2
109 bool "NFS client support for NFSv4.2"
110 depends on NFS_V4_1
111 help
112 This option enables support for minor version 2 of the NFSv4 protocol
113 in the kernel's NFS client.
114
115 If unsure, say N.
116
117config PNFS_FILE_LAYOUT
118 tristate
119 depends on NFS_V4_1
120 default NFS_V4
121
122config PNFS_BLOCK
123 tristate
124 depends on NFS_V4_1 && BLK_DEV_DM
125 default NFS_V4
126
127config PNFS_FLEXFILE_LAYOUT
128 tristate
129 depends on NFS_V4_1
130 default NFS_V4
131
132config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN
133 string "NFSv4.1 Implementation ID Domain"
134 depends on NFS_V4_1
135 default "kernel.org"
136 help
137 This option defines the domain portion of the implementation ID that
138 may be sent in the NFS exchange_id operation. The value must be in
139 the format of a DNS domain name and should be set to the DNS domain
140 name of the distribution.
141 If the NFS client is unchanged from the upstream kernel, this
142 option should be set to the default "kernel.org".
143
144config NFS_V4_1_MIGRATION
145 bool "NFSv4.1 client support for migration"
146 depends on NFS_V4_1
147 default n
148 help
149 This option makes the NFS client advertise to NFSv4.1 servers that
150 it can support NFSv4 migration.
151
152 The NFSv4.1 pieces of the Linux NFSv4 migration implementation are
153 still experimental. If you are not an NFSv4 developer, say N here.
154
155config NFS_V4_SECURITY_LABEL
156 bool
157 depends on NFS_V4_2 && SECURITY
158 default y
159
160config ROOT_NFS
161 bool "Root file system on NFS"
162 depends on NFS_FS=y && IP_PNP
163 help
164 If you want your system to mount its root file system via NFS,
165 choose Y here. This is common practice for managing systems
166 without local permanent storage. For details, read
167 <file:Documentation/admin-guide/nfs/nfsroot.rst>.
168
169 Most people say N here.
170
171config NFS_FSCACHE
172 bool "Provide NFS client caching support"
173 depends on NFS_FS
174 select NETFS_SUPPORT
175 select FSCACHE
176 help
177 Say Y here if you want NFS data to be cached locally on disc through
178 the general filesystem cache manager
179
180config NFS_USE_LEGACY_DNS
181 bool "Use the legacy NFS DNS resolver"
182 depends on NFS_V4
183 help
184 The kernel now provides a method for translating a host name into an
185 IP address. Select Y here if you would rather use your own DNS
186 resolver script.
187
188 If unsure, say N
189
190config NFS_USE_KERNEL_DNS
191 bool
192 depends on NFS_V4 && !NFS_USE_LEGACY_DNS
193 select DNS_RESOLVER
194 default y
195
196config NFS_DEBUG
197 bool
198 depends on NFS_FS && SUNRPC_DEBUG
199 select CRC32
200 default y
201
202config NFS_DISABLE_UDP_SUPPORT
203 bool "NFS: Disable NFS UDP protocol support"
204 depends on NFS_FS
205 default y
206 help
207 Choose Y here to disable the use of NFS over UDP. NFS over UDP
208 on modern networks (1Gb+) can lead to data corruption caused by
209 fragmentation during high loads.
210
211config NFS_V4_2_READ_PLUS
212 bool "NFS: Enable support for the NFSv4.2 READ_PLUS operation"
213 depends on NFS_V4_2
214 default y
215 help
216 Choose Y here to enable use of the NFS v4.2 READ_PLUS operation.