.\" Copyright (c) 2007 Daniel Braniss <danny@cs.huji.ac.il>
.\" All rights reserved.
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.\" $FreeBSD$
.\"
.Dd February 22, 2007
.Dt ISCONTROL 8
.Os
.Sh NAME
.Nm iscontrol
.Nd login/negotiator/control for an iSCSI initiator session
.Sh SYNOPSIS
.Nm
.Op Fl vd
.Oo
.Op Fl Ar file
.Op Fl n Ar nickname
.Oc
.Op Fl t Ar target
.Op Ar variable Ns = Ns Ar value
.Sh DESCRIPTION
Internet SCSI (iSCSI) is a network protocol standard, that allows the
use of the SCSI protocol over TCP/IP networks,
the
.Nm
program is the userland side of an iSCSI session, see
iscsi_initiator(4).
It has 2 modes of operation, if -d (discovery session) is specified,
it will print out the
.Em target names
returned by the target and exit.
In the second mode, it will, after a succesful login/negotiation, run
in daemon mode, monitoring the connection, and will try to reconnect
in case of a network/target failure. It will terminate/logout the session
when a SIGHUP signal is received.
The flags are as follows:
.Bl -tag -width variable=value
.It Fl v
verbose mode.
.It Fl d
do a 
.Em discovery session
and exit.
.It Fl c Ar file
a file containing configuration
.Em key-options ,
see iscsi.conf(5)
.It Fl n Ar nickname
if
.Sy -c file
is specified, then search for the block named
.Em nickname
in that file, see iscsi.conf(5)
.It Fl t Ar target
is the target's IP address or name
.It Ar variable Ns = Ns Ar value
see iscsi.conf(5) for the complete list of variables/options and their
possible values.
.El
.Sh EXAMPLES
.Dl iscontrol -dt myiscsitarget
.Pp
will start a 
.Em discovery session
with the target and
print to stdout the list of available targetnames/targetadresses.
Note: this listing does not necessarily mean availability, since
depending on the target configuration, a discovery session might
not need login/access permition, but a 
.Em full session
certainly does.
.sp
.Dl iscontrol -c /etc/iscsi.conf -n myiscsi
.Pp
will read options from file /etc/iscsi.conf, use the targetaddress
found in the block nicknamed myiscsi, login and negotiate
whatever options are specified, and start an iscsi-session.
.Sh SEE ALSO
.Xr iscsi_initiator 4 ,
.Xr iscsi.conf 5 ,
.Xr camcontrol 8 ,
.Xr da 4 ,
.Xr sa 4
.Sh STANDARDS
RFC 3720
.\"Sh HISTORY
.Sh BUGS
.Nm
should probably load the iscsi_initiator module if needed.
.br
Not all functions/specifications have been implemented yet, noticeably
missing are the Task Management Funtions.
The error recovery, though not
.Em fully compliant
does a brave effort to recover from network disconnects.