NAME

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

SYNOPSIS

iscontrol

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

DESCRIPTION

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 target names 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:

-c file

a file containing configuration key-options, see iscsi.conf(5).

-d

do a discovery session and exit.

-n nickname

if -c file is specified, then search for the block named nickname in that file, see iscsi.conf(5).

-p pidfile

will write the process ID of the session to the specified pidfile

-t target

the target's IP address or name.

-v

verbose mode.

variable= value

see iscsi.conf(5) for the complete list of variables/options and their possible values.

EXAMPLES

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 full session 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.

SEE ALSO

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

STANDARDS

RFC 3720

BUGS

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 fully compliant does a brave effort to recover from network disconnects.