1 .\" Copyright (c) 2012 The FreeBSD Foundation
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4 .\" This software was developed by Edward Tomasz Napierala under sponsorship
5 .\" from the FreeBSD Foundation.
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35 .Nd CAM Target Layer / iSCSI target daemon configuration file
39 configuration file is used by the
44 are interpreted as comments.
45 The general syntax of the
48 .Bd -literal -offset indent
51 .No auth-group Ar name No {
52 .Dl chap Ar user Ar secret
56 .No portal-group Ar name No {
58 .\".Dl listen-iser Ar address
59 .Dl discovery-auth-group Ar name
64 .Dl auth-group Ar name
65 .Dl portal-group Ar name
66 .Dl lun Ar number No {
73 .Bl -tag -width indent
74 .It Ic auth-group Ar name
77 configuration context,
78 defining a new auth-group,
79 which can then be assigned to any number of targets.
81 The debug verbosity level.
83 .It Ic maxproc Ar number
84 The limit for concurrently running child processes handling
87 A setting of 0 disables the limit.
88 .It Ic pidfile Ar path
89 The path to the pidfile.
91 .Pa /var/run/ctld.pid .
92 .It Ic portal-group Ar name
95 configuration context,
96 defining a new portal-group,
97 which can then be assigned to any number of targets.
101 configuration context, which can contain one or more
104 .It Ic timeout Ar seconds
105 The timeout for login sessions, after which the connection
106 will be forcibly terminated.
108 A setting of 0 disables the timeout.
110 .Ss auth-group Context
111 .Bl -tag -width indent
112 .It Ic auth-type Ar type
113 Sets the authentication type.
120 In most cases it is not necessary to set the type using this clause;
121 it is usually used to disable authentication for a given
123 .It Ic chap Ar user Ar secret
124 A set of CHAP authentication credentials.
127 the configuration may only contain either
131 entries; it is an error to mix them.
132 .It Ic chap-mutual Ar user Ar secret Ar mutualuser Ar mutualsecret
133 A set of mutual CHAP authentication credentials.
136 the configuration may only contain either
140 entries; it is an error to mix them.
141 .It Ic initiator-name Ar initiator-name
142 An iSCSI initiator name.
143 Only initiators with a name matching one of the defined
144 names will be allowed to connect.
145 If not defined, there will be no restrictions based on initiator
147 .It Ic initiator-portal Ar address Ns Op / Ns Ar prefixlen
148 An iSCSI initiator portal: an IPv4 or IPv6 address, optionally
149 followed by a literal slash and a prefix length.
150 Only initiators with an address matching one of the defined
151 addresses will be allowed to connect.
152 If not defined, there will be no restrictions based on initiator
155 .Ss portal-group Context
156 .Bl -tag -width indent
157 .It Ic discovery-auth-group Ar name
158 Assign a previously defined authentication group to the portal group,
159 to be used for target discovery.
160 By default, portal groups are assigned predefined
163 which denies discovery.
166 .Qq Ar no-authentication ,
168 to permit discovery without authentication.
169 .It Ic listen Ar address
170 An IPv4 or IPv6 address and port to listen on for incoming connections.
171 .\".It Ic listen-iser Ar address
172 .\"An IPv4 or IPv6 address and port to listen on for incoming connections
173 .\"using iSER (iSCSI over RDMA) protocol.
176 .Bl -tag -width indent
178 Assign a human-readable description to the target.
180 .It Ic auth-group Ar name
181 Assign a previously defined authentication group to the target.
182 By default, targets that do not specify their own auth settings,
183 using clauses such as
191 which denies all access.
194 .Qq Ar no-authentication ,
195 may be used to permit access
196 without authentication.
197 Note that targets must only use one of
198 .Sy auth-group , chap , No or Sy chap-mutual ;
199 it is a configuration error to mix multiple types in one target.
200 .It Ic auth-type Ar type
201 Sets the authentication type.
208 In most cases it is not necessary to set the type using this clause;
209 it is usually used to disable authentication for a given
211 This clause is mutually exclusive with
214 both in a single target.
215 .It Ic chap Ar user Ar secret
216 A set of CHAP authentication credentials.
217 Note that targets must only use one of
218 .Sy auth-group , chap , No or Sy chap-mutual ;
219 it is a configuration error to mix multiple types in one target.
220 .It Ic chap-mutual Ar user Ar secret Ar mutualuser Ar mutualsecret
221 A set of mutual CHAP authentication credentials.
222 Note that targets must only use one of
223 .Sy auth-group , chap , No or Sy chap-mutual ;
224 it is a configuration error to mix multiple types in one target.
225 .It Ic initiator-name Ar initiator-name
226 An iSCSI initiator name.
227 Only initiators with a name matching one of the defined
228 names will be allowed to connect.
229 If not defined, there will be no restrictions based on initiator
231 This clause is mutually exclusive with
234 both in a single target.
235 .It Ic initiator-portal Ar address Ns Op / Ns Ar prefixlen
236 An iSCSI initiator portal: an IPv4 or IPv6 address, optionally
237 followed by a literal slash and a prefix length.
238 Only initiators with an address matching one of the defined
239 addresses will be allowed to connect.
240 If not defined, there will be no restrictions based on initiator
242 This clause is mutually exclusive with
245 both in a single target.
246 .It Ic portal-group Ar name
247 Assign a previously defined portal group to the target.
248 The default portal group is
250 which makes the target available
251 on TCP port 3260 on all configured IPv4 and IPv6 addresses.
255 configuration context, defining a LUN exported by the parent target.
258 .Bl -tag -width indent
259 .It Ic backend Ar block No | Ar ramdisk
260 The CTL backend to use for a given LUN.
265 block is used for LUNs backed
266 by files or disk device nodes; ramdisk is a bitsink device, used mostly for
268 The default backend is block.
269 .It Ic blocksize Ar size
270 The blocksize visible to the initiator.
271 The default blocksize is 512.
272 .It Ic device-id Ar string
273 The SCSI Device Identification string presented to the initiator.
274 .It Ic option Ar name Ar value
275 The CTL-specific options passed to the kernel.
276 All CTL-specific options are documented in the
281 The path to the file or device node used to back the LUN.
282 .It Ic serial Ar string
283 The SCSI serial number presented to the initiator.
285 The LUN size, in bytes.
288 .Bl -tag -width ".Pa /etc/ctl.conf" -compact
290 The default location of the
296 pidfile /var/run/ctld.pid
299 chap-mutual "user" "secret" "mutualuser" "mutualsecret"
300 chap-mutual "user2" "secret2" "mutualuser" "mutualsecret"
301 initiator-portal 192.168.1.1/16
306 initiator-name "iqn.2012-06.com.example:initiatorhost1"
307 initiator-name "iqn.2012-06.com.example:initiatorhost2"
308 initiator-portal 192.168.1.1/24
309 initiator-portal [2001:db8::de:ef]
313 discovery-auth-group no-authentication
316 listen [fe80::be:ef]:3261
319 target iqn.2012-06.com.example:target0 {
320 alias "Example target"
321 auth-group no-authentication
323 path /dev/zvol/tank/example_0
329 target iqn.2012-06.com.example:target1 {
330 chap chapuser chapsecret
332 path /dev/zvol/tank/example_1
336 target iqn.2012-06.com.example:target2 {
340 path /dev/zvol/tank/example2_0
343 path /dev/zvol/tank/example2_1
355 configuration file functionality for
358 .An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org
359 under sponsorship from the FreeBSD Foundation.