ConnectingToAniSCSIServerFromLinux < Main

---+ Connecting to an iSCSI server from Linux

IMPORTANT: *never stop or kill the iscsid daemon while iSCSI disks are still present!*

---++ Introduction

This document describes how to connection to an iSCSI server using Open-iSCSI from a Linux machine.
I will asume Open-iSCSI has alread been installed

First setup the Initiator name in /etc/iscsi/initiatorname.iscsi. For example:

<verbatim>
InitiatorName=iqn.2001-04.org.gentoo:client
InitiatorAlias=client
</verbatim>

Next setup authenticaion options in /etc/iscsi/iscsid.conf, if needed. For example:

<verbatim>
node.session.auth.authmethod = CHAP
node.session.auth.username = username
node.session.auth.password = password

discovery.sendtargets.auth.authmethod = CHAP
discovery.sendtargets.auth.username = username
discovery.sendtargets.auth.password = password
</verbatim>

---++ Setting up iSCSI interface

---+++ Creating a new iSCSI interface

=iscsiadm -m iface -I iface0 -o new=

---+++ Configuring an existing iSCSI interface

=iscsiadm -m iface -I iface0 -o update -n iface.initiatorname -v iqn.2001-04.org.gentoo:client=
This configures the interface initiatorname (sets it to qn.2001-04.org.gentoo:client in this example)

=iscsiadm -m iface -I iface0 -o update -n iface.ipaddress -v 192.168.2.2=

This configures interface iface0 to use 192.168.2.2 as the source IP address. It also possible to use the interface name (iface.net_ifacename) or MAC address (iface.hwaddress)

---+++ Showing iSCSI interface settings

Use =iscsiadm -m iface -I iface0 -o show= to show information about an interface (iface0 in this case).

---+++ Deleting an existing iSCSI interface

=iscsiadm -m iface -I iface0 -o delete=

---++ Set up iSCSI target discovery

---+++ add iSCSI discovery target

Use the sendtargets method discover targets on 192.168.2.4, using the configured username / password:

=iscsiadm -m discovery -t sendtargets -p 192.168.2.4:3260 -I iface0=

---+++ show iSCSI discovery settings

=iscsiadm -m discovery -p 192.168.2.4:3260= 

---+++ remove iSCSI discovery target

To disable discovery for the 192.168.2.4 target, use:
=iscsiadm -m discovery -o delete -p 192.168.2.4:3260=

---++ Connecting to iSCSI target disks

-- Main.IvoVanGeel - 30 Dec 2011
This topic: Main > WebHome > ConnectingToAniSCSIServerFromLinux
Topic revision: r2 - 31 Dec 2011 - IvoVanGeel