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ISCONTROL(8) System Manager's Manual ISCONTROL(8)

iscontrol — login/negotiator/control for an iSCSI initiator session

iscontrol [-dv] [-c file [-n nickname]] [-p pidfile] [-t target] [variable=value]

This command, along with its kernel counterpart iscsi_initiator(4), is obsolete. Users are advised to use iscsictl(8) instead.

Internet SCSI (iSCSI) is a network protocol standard, that allows the use of the SCSI protocol over TCP/IP networks, the iscontrol 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 returned by the target and exit. In the second mode, it will, after a successful 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:

file
a file containing configuration , see iscsi.conf(5).
do a discovery session and exit.
nickname
if -c file is specified, then search for the block named in that file, see iscsi.conf(5).
pidfile
will write the process ID of the session to the specified
target
the target's IP address or name.
verbose mode.
variable=value
see iscsi.conf(5) for the complete list of variables/options and their possible values.

iscontrol -dt myiscsitarget

will start a 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 permission, but a certainly does.

iscontrol -c /etc/iscsi.conf -n myiscsi

will read options from /etc/iscsi.conf, use the targetaddress found in the block nicknamed myiscsi, login and negotiate whatever options are specified, and start an iscsi-session.

da(4), iscsi_initiator(4), sa(4), iscsi.conf(5), camcontrol(8), iscsictl(8)

RFC 3720

The iscontrol utility appeared in Fx 7.0 .

iscontrol should probably load the iscsi_initiator module if needed.
Not all functions/specifications have been implemented yet, noticeably missing are the Task Management Functions. The error recovery, though not does a brave effort to recover from network disconnects.

September 9, 2016 FreeBSD-12.0