OpenBSD and iSCSI part2: the initiator (client)

• Author: Solène
• Date: 21 February 2019
• Tags: unix openbsd iscsi

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This is the second article of the serie about iSCSI. In this one, you will

learn how to connect to an iSCSI target using OpenBSD base daemon iscsid.

The configuration file of iscsid doesn't exist by default, its location is

• /etc/iscsi.conf*. It can be easily written using the following:

target1="100.64.2.3"

myaddress="100.64.2.2"

target "disk1" {

    initiatoraddr $myaddress

    targetaddr $target1

    targetname "iqn.1994-04.org.netbsd.iscsi-target:target0"

}

While most lines are really obvious, it is mandatory to have the line

initiatoraddr, many thanks to cwen@ for pointing this out when I was stuck on

it.

The targetname value will depend of the iSCSI target server. If you use

netbsd-iscsi-target, then you only need to care about the last part, aka

• target0* and replace it by the name of your target (which is target0 for the

default one).

Then we can enable the daemon and start it:

# rcctl enable iscsid

# rcctl start iscsid

In your dmesg, you should see a line like:

sd4 at scsibus0 targ 1 lun 0: <NetBSD, NetBSD iSCSI, 0> SCSI3 0/direct fixed t10.NetBSD_0x5c6cf1b69fc3b38a

If you use netbsd-iscsi-target, the whole line should be identic except for the

sd4 part which can change, depending of your hardware.

If you don't see it, you may need to reload iscsid configuration file with