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I have a trio of CentOS 6.4 machines that I'm trying to configure to use iSCSI. Basically two different initiators talking to two different targets on a single host server.

On one machine, "the server", I have two targets defined in /etc/tgt/targets.conf each target points to a different logical disk. The configuration stanzas are nearly identical, varying only in their names and initiator-address fields.

These are the lines from /etc/tgt/targets.conf that aren't commented out.

default-driver iscsi

<target iqn.2013-08.com.example.group:backup>
  backing-store /dev/primary/backup
  initiator-address <ip address>
  incominguser username password

<target iqn.2013-08.com.example.group:migrations>
  backing-store /dev/primary/migrations
  initiator-address <ip address>
  incominguser username password

When I run tgt-admin -s I show two targets as expected. However, one of the targets shows only 1 LUN (0 Controller) while the other target shows 2 LUNs (a Controller and a Disk). I have no idea if this is significant.

Sadly, the first target (w/o a disk LUN) is able to be reached by it's initiator and the machine can mount the space and it's all peaches and cream. The second target (w/ the disk LUN) can't be reached by the initiator. When I run iscsiadm -m discovery -t sendtargets -p <ipaddr> I get back iscsiadm: No portals found.

What's worse, even if I when the second target to expect connection from the other address, or remove the initiator-address portion of the configuration, no other systems seem to see the second target.

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Please share your targets.conf. –  b13n1u Jan 13 '14 at 21:35
Updated to include targets.conf. Thanks. –  OldTroll Jan 13 '14 at 21:50
Did you add these targets at the same time? Or did you add the second one after you already started the service? –  Jason Ilicic Jan 13 '14 at 22:05
They should have been added at the same time originally. I have manually stopped and restarted the tgtd service more times today than I care to remember. –  OldTroll Jan 13 '14 at 22:22
Have you tried to change the target name for example to iqn.2013-09.com.example.group:migrations ? –  b13n1u Jan 14 '14 at 9:17

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