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189 lines
5.0 KiB
Groff
189 lines
5.0 KiB
Groff
.\" Copyright (c) 2007-2010 Daniel Braniss <danny@cs.huji.ac.il>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd December 17, 2013
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.Dt ISCSI.CONF 5
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.Os
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.Sh NAME
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.Nm iscsi.conf
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.Nd iSCSI initiator configuration file
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.Sh DESCRIPTION
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The file
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.Nm ,
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is used by the
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.Xr iscsictl 8
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and
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.Xr iscontrol 8
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utilities.
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It contains declarations and parameter/key-options.
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The syntax is very simple,
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.D1 Li variable = value;
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and they can be grouped via a
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.Em block
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declaration:
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.Bf Li
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.Bd -literal
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# this is a comment
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target_1 { # nickname
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variable = value;
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...
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} # this must be on a line by itself.
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.Ed
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.Ef
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.Pp
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The following are specified in the iSCSI RFC 3720,
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for a full description see sections 11/12 of the RFC.
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.Bl -tag -width MaxConnections
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.It Cm AuthMethod
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currently only supported authentication method is CHAP, with
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digest either MD5 or SHA.
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Default is none.
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.It Cm HeaderDigest
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a
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.Em digest
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is calculated on the header of all iSCSI PDUs, and
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checked.
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Only CRC32C is implemented.
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Default is none.
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.It Cm DataDigest
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same as for HeaderDigest, but on the data part of the iSCSI PDU.
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(not yet tested)
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.It Cm TargetName
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is the name by which the target is known, not to be confused with
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target address, either obtained via the target administrator, or
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from a
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.Em discovery session .
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.It Cm InitiatorName
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if not specified, defaults to
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.Sy iqn.2005-01.il.ac.huji.cs:
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.Aq hostname .
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.It Cm TargetAddress
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is of the form
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.Sy domainname[:port][,portal-group-tag]
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to quote the RFC:
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.Bd -ragged -compact
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The domainname can be specified as either a DNS host name, a
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dotted-decimal IPv4 address, or a bracketed IPv6 address as specified
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in [RFC2732].
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.Ed
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Note: portal-group-tag is unused at the moment.
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.Em not implemented yet.
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.It Cm MaxRecvDataSegmentLength
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the maximum data segment length in
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bytes it can receive in an iSCSI PDU, default is 8192.
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.It Cm MaxOutstandingR2T
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is used to calculate/negotiate the
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.Em tag opening ,
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can be overridden by the
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.Sy tag
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option.
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.It Cm SessionType
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either Discovery or Normal, default is Normal, see the
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.Fl d
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flag of
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.Cm iscontrol .
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.El
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.sp
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The following are not specified in the
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.Sy RFC 3720
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.Bl -tag -width sockbufsize
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.It Cm port
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The iSCSI port used by the iSCSI protocol, defaults to 3260.
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.It Cm tags
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Sets the
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.Em tag opening
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to the value specified.
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.It Cm maxluns
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overrides the compiled value of
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.Sy luns ,
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see
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.Xr iscsi_initiator 4 .
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This value can only be reduced.
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.It Cm sockbufsize
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sets the receiver and transmitter socket buffer size to
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.Em size ,
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in kilobytes.
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The default is 128.
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.El
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.sp
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If
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.Em AuthMethod
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is set to
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.Cm CHAP ,
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then the following must also be set:
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.Bl -tag -width chapSecret
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.It Cm chapSecret
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this
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.Em shared-secret .
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Can be either an ASCII string (e.g. hello world), a hex string (e.g
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0xababcd0987654321...), or base64 string (eg 0b...)
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.It Cm chapIName
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the chap-name, defaults to
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.Em hostname .
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.It Cm chapDigest
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can be MD5 or SHA1.
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.It Cm tgtChapName/tgtChapSecret
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name and secret used for mutual CHAP; by default, mutual CHAP
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is not used.
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.El
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.Sh FILES
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.Bl -tag -width indent
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.It Pa /etc/iscsi.conf
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.El
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.Sh EXAMPLES
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.Bd -literal
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#
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# Globals
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#
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port = 3260
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#
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myiscsi { # nickname
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targetaddress = iscsi1
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targetname = iqn.1900.com.com:sn.123456
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}
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chaptest {
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targetaddress= 10.0.0.1;
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targetname = iqn.1900.com.com:sn.123456
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initiatorname= iqn.2005-01.il.ac.huji.cs:nobody
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authmethod = CHAP; chapDigest = SHA1;
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chapsecret = 0x3713c3336d9a224c2791c873d3d2b174
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tags = 256
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}
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.Ed
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.Sh SEE ALSO
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.Xr iscsi_initiator 4 ,
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.Xr iscsictl 8 ,
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.Xr iscontrol 8
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.Sh STANDARDS
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ISCSI RFC 3720
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.\"Sh HISTORY
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.\"Sh AUTHORS
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.Sh BUGS
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Some options have not been implemented, either they were found
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to be unnecessary, or not understood, this can change in the future.
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.br
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The tags opening value is difficult to calculate, use wisely.
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