ISCSI_INITIATOR(4) BSD Kernel Interfaces Manual ISCSI_INITIATOR(4)NAME
iscsi_initiator -- kernel driver for the iSCSI protocol
SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file:
device iscsi_initiator
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
iscsi_initiator_load="YES"
DESCRIPTION
This driver, along with its userspace counterpart iscontrol(8), is obsolete. Users are advised to use iscsi(4) instead.
The iscsi_initiator implements the kernel side of the Internet SCSI (iSCSI) network protocol standard, the user land companion is
iscontrol(8), and permits access to remote virtual SCSI devices via cam(4).
SYSCTL VARIABLES
debug.iscsi_initiator set the debug-level, 0 means no debugging, 9 for maximum.
net.iscsi.isid the initiator part of the Session Identifier.
kern.cam.cam_srch_hi=1 allow search above LUN 7 for SCSI3 and greater devices.
the following are informative only:
net.iscsi.driver_version the current version of the driver.
net.iscsi.sessions the number of current active sessions.
net.iscsi.n.targetname is the targe name of session n.
net.iscsi.n.targeaddress is the IP address of the target of session n.
net.iscsi.n.stats are some statistics for session n
net.iscsi.n.pid is the process id of the userland side of session n, see iscontrol(8).
FILES
The iscsi_initiator driver creates the following:
/dev/iscsi used to create new sessions.
/dev/iscsi%d for each new session.
SEE ALSO cam(4), camcontrol(8), iscontrol(8)STANDARDS
iSCSI RFC 3720
AUTHORS
This software was written by Daniel Braniss <danny@cs.huji.ac.il>
BUGS
The lun discovery method is old-fashioned.
BSD October 9, 2014 BSD
Check Out this Related Man Page
ISCSI.CONF(5) BSD File Formats Manual ISCSI.CONF(5)NAME
iscsi.conf -- iSCSI initiator configuration file
DESCRIPTION
The file iscsi.conf, is used by the iscsictl(8) and iscontrol(8) utilities. It contains declarations and parameter/key-options. The syntax
is very simple,
variable = value;
and they can be grouped via a block declaration:
# this is a comment
target_1 { # nickname
variable = value;
...
} # this must be on a line by itself.
The following are specified in the iSCSI RFC 3720, for a full description see sections 11/12 of the RFC.
AuthMethod currently only supported authentication method is CHAP, with digest either MD5 or SHA. Default is none.
HeaderDigest a digest is calculated on the header of all iSCSI PDUs, and checked. Only CRC32C is implemented. Default is none.
DataDigest same as for HeaderDigest, but on the data part of the iSCSI PDU. (not yet tested)
TargetName is the name by which the target is known, not to be confused with target address, either obtained via the target administra-
tor, or from a discovery session.
InitiatorName if not specified, defaults to iqn.2005-01.il.ac.huji.cs: <hostname>.
TargetAddress is of the form domainname[:port][,portal-group-tag] to quote the RFC:
The domainname can be specified as either a DNS host name, a dotted-decimal IPv4 address, or a bracketed IPv6 address as
specified in [RFC2732].
Note: portal-group-tag is unused at the moment. not implemented yet.
MaxRecvDataSegmentLength
the maximum data segment length in bytes it can receive in an iSCSI PDU, default is 8192.
MaxOutstandingR2T
is used to calculate/negotiate the tag opening, can be overridden by the tag option.
SessionType either Discovery or Normal, default is Normal, see the -d flag of iscontrol.
The following are not specified in the RFC 3720
offload Name of selected iSCSI hardware offload driver.
port The iSCSI port used by the iSCSI protocol, defaults to 3260.
tags Sets the tag opening to the value specified.
maxluns overrides the compiled value of luns, see iscsi_initiator(4). This value can only be reduced.
sockbufsize sets the receiver and transmitter socket buffer size to size, in kilobytes. The default is 128.
If AuthMethod is set to CHAP, then the following must also be set:
chapSecret this shared-secret. Can be either an ASCII string (e.g. hello world), a hex string (e.g 0xababcd0987654321...), or base64 string
(eg 0b...)
chapIName the chap-name, defaults to hostname.
chapDigest can be MD5 or SHA1.
tgtChapName/tgtChapSecret
name and secret used for mutual CHAP; by default, mutual CHAP is not used.
FILES
/etc/iscsi.conf
EXAMPLES
#
# Globals
#
port = 3260
#
myiscsi { # nickname
targetaddress = iscsi1
targetname = iqn.1900.com.com:sn.123456
}
chaptest {
targetaddress= 10.0.0.1;
targetname = iqn.1900.com.com:sn.123456
initiatorname= iqn.2005-01.il.ac.huji.cs:nobody
authmethod = CHAP; chapDigest = SHA1;
chapsecret = 0x3713c3336d9a224c2791c873d3d2b174
tags = 256
}
SEE ALSO iscsi_initiator(4), iscontrol(8), iscsictl(8)STANDARDS
ISCSI RFC 3720
BUGS
Some options have not been implemented, either they were found to be unnecessary, or not understood, this can change in the future.
The tags opening value is difficult to calculate, use wisely.
BSD February 4, 2015 BSD