The NetBSD iSCSI HOWTO ====================== This document is intended to tell you how to set up an iSCSI target on a NetBSD host, so that block storage can be presented to the network. It then goes on to show how to connect to that storage using the Microsoft iSCSI initiator (version 1.06, running on Windows XP). 1. Configuring the NetBSD iSCSI target ====================================== 1.1. Decide what storage will be presented The iSCSI target serves up block storage to clients on the network. These clients are called "initiators". Firstly, we must decide how much storage we are going to serve up, and for this document, we will serve up 100 MB. It will be in a file called /tmp/iscsi-target0. So we must first edit /etc/iscsi/targets, so that it contains the following lines: # extent file or device start length extent0 /tmp/iscsi-target0 0 100MB # target flags storage netmask target0 rw extent0 0/0 The extent definition tells the file which is used as backing store. It is persistent, so that the target can serve up the same storage after reboot. Its length is 100 MB, and there is no offset into the file for the start of the extent. (An offset is useful if you need to skip over MBRs, or disklabels). The extent is mounted read-write by "target0", and is served up to any host (the 0.0.0.0/0 netmask). 1.2. Start the iscsi-target Issue the command: # /etc/rc.d/iscsi_target forcestart and you should see the messages from the iscsi-target: Starting iscsi_target. Reading configuration from `/etc/iscsi/targets' target0:rw:0/0 extent0:/tmp/iscsi-target0:0:104857600 DISK: 1 logical units (204800 blocks, 512 bytes/block), type iscsi fs DISK: LU 0: 100 MB disk storage for "target0" TARGET: TargetName is iqn.1994-04.org.netbsd.iscsi-target 1.3 You're done! Congratulations - your iSCSI target is now up and running and serving blocks to initiators. 2. Configuring the Microsoft iSCSI initiator, version 1.06 ========================================================== Please see the relevant documentation on setting up iSCSI initiators. Alistair Crooks Sun Jan 6 10:38:19 GMT 2008