.\" Copyright (c) 2012 The FreeBSD Foundation
.\"
.\" This software was developed by Edward Tomasz Napierala under sponsorship
.\" from the FreeBSD Foundation.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" $FreeBSD$
.\"
.Dd December 27, 2018
.Dt ISCSICTL 8
.Os
.Sh NAME
.Nm iscsictl
.Nd iSCSI initiator management utility
.Sh SYNOPSIS
.Nm
.Fl A
.Fl p Ar portal Fl t Ar target
.Op Fl u Ar user Fl s Ar secret
.Op Fl w Ar timeout
.Op Fl r
.Op Fl e Cm on Ns | Ns Cm off
.Nm
.Fl A
.Fl d Ar discovery-host
.Op Fl u Ar user Fl s Ar secret
.Op Fl r
.Op Fl e Cm on Ns | Ns Cm off
.Nm
.Fl A
.Fl a Op Fl c Ar path
.Nm
.Fl A
.Fl n Ar nickname Op Fl c Ar path
.Nm
.Fl M
.Fl i Ar session-id
.Op Fl p Ar portal
.Op Fl t Ar target
.Op Fl u Ar user
.Op Fl s Ar secret
.Op Fl e Cm on Ns | Ns Cm off
.Nm
.Fl M
.Fl i Ar session-id
.Op Fl n Ar nickname Op Fl c Ar path
.Nm
.Fl R
.Op Fl p Ar portal
.Op Fl t Ar target
.Nm
.Fl R
.Fl a
.Nm
.Fl R
.Fl n Ar nickname Op Fl c Ar path
.Nm
.Fl L
.Op Fl v
.Op Fl w Ar timeout
.Sh DESCRIPTION
The
.Nm
utility is used to configure the iSCSI initiator.
.Pp
The following options are available:
.Bl -tag -width "-d discovery-host"
.It Fl -libxo
Generate output via
.Xr libxo 3
in a selection of different human and machine readable formats.
See
.Xr xo_parse_args 3
for details on command line arguments.
.It Fl A
Add session.
.It Fl M
Modify session.
.It Fl R
Remove session.
.It Fl L
List sessions.
.It Fl a
When adding, add all sessions defined in the configuration file.
When removing, remove all currently established sessions.
.It Fl c Ar path
Path to the configuration file.
The default is
.Pa /etc/iscsi.conf .
.It Fl d Ar discovery-host
Target host name or address used for SendTargets discovery.
When used, it will add a temporary discovery session.
After discovery is done, sessions will be added for each discovered target,
and the temporary discovery session will be removed.
.It Fl e Cm on Ns | Ns Cm off
Enable or disable the session.
This is ignored for discovery sessions, but gets passed down to normal
sessions they add.
.It Fl i Ar session-id
Session ID, as displayed by
.Nm
.Fl v .
.It Fl n Ar nickname
The
.Ar nickname
of a session defined in the configuration file.
.It Fl p Ar portal
Target portal \(em host name or address \(em for statically defined targets.
.It Fl r
Use iSER (iSCSI over RDMA) instead of plain iSCSI over TCP/IP.
.It Fl s Ar secret
CHAP secret.
.It Fl t Ar target
Target name.
.It Fl u Ar user
CHAP login.
.It Fl v
Verbose mode.
.It Fl w Ar timeout
Instead of returning immediately, wait up to
.Ar timeout
seconds until all configured sessions are successfully established.
.El
.Pp
Certain parameters are necessary when adding a session.
One can specify these either via command line (using the
.Fl t ,
.Fl p ,
.Fl u ,
and
.Fl s
options), or configuration file (using the
.Fl a
or
.Fl n
options).
Some functionality - for example mutual CHAP - is available only
via configuration file.
.Pp
Since connecting to the target is performed in background, non-zero
exit status does not mean that the session was successfully established.
Use either
.Nm Fl L
to check the connection status, or the
.Fl w
flag to wait for session establishment.
.Pp
Note that in order for the iSCSI initiator to be able to connect to a target,
the
.Xr iscsid 8
daemon must be running.
.Pp
Also note that
.Fx
currently supports two different initiators: the old one,
.Xr iscsi_initiator 4 ,
with its control utility
.Xr iscontrol 8 ,
and the new one,
.Xr iscsi 4 ,
with
.Nm
and
.Xr iscsid 8 .
The only thing the two have in common is the configuration file,
.Xr iscsi.conf 5 .
.Sh FILES
.Bl -tag -width ".Pa /etc/iscsi.conf" -compact
.It Pa /etc/iscsi.conf
iSCSI initiator configuration file.
.El
.Sh EXIT STATUS
The
.Nm
utility exits 0 on success, and >0 if an error occurs.
.Sh EXAMPLES
Attach to target iqn.2012-06.com.example:target0, served by 192.168.1.1:
.Dl Nm Fl A Fl t Ar iqn.2012-06.com.example:target0 Fl p Ar 192.168.1.1
.Pp
Perform discovery on 192.168.1.1, and add disabled sessions for each
discovered target; use
.Nm -M -e on
to connect them:
.Dl Nm Fl A Fl d Ar 192.168.1.1 Fl e Ar off
.Pp
Disconnect all iSCSI sessions:
.Dl Nm Fl Ra
.Sh SEE ALSO
.Xr libxo 3 ,
.Xr xo_parse_args 3 ,
.Xr iscsi 4 ,
.Xr iscsi.conf 5 ,
.Xr iscsid 8
.Sh HISTORY
The
.Nm
command appeared in
.Fx 10.0 .
.Sh AUTHORS
The
.Nm
utility was developed by
.An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org
under sponsorship from the FreeBSD Foundation.