[stgt] Cannot connect iSCSI initiator to two TGT hosts at once...

[ronnie sahlberg]

Hi Clay,

You should be able to set each using targets.conf

http://linux.die.net/man/5/targets.conf

The directives you want are :
  scsi_id <val>
  scsi_sn <val>



On Tue, Apr 23, 2013 at 6:46 PM, Clay Goss
<claygoss at issuestechnology.com> wrote:
> I have two Centos 6.4 minimal systems with TGT on them, each with a
> single, iSCSI target LUN.
>
> I am trying to connect to both from an ESXi 5.0 U1 host.
>
> I can connect and mount the volume on either target system is the
> other is offline, but not to both at once.
>
> Based on my research, I believe I have tracked it down to the fact
> that both target hosts report their TGT controller as having SCSI ID
> of 00010000 and SCSI SN of beaf10. This seems to cause the initiator
> to believe the two hosts are one and the second IP is a second path.
>
> What my research has failed to show, is how to make them unique. I did
> try removing the targets.conf from /etc/tgt and issuing:
>
> tgtadm --lld iscsi --op new --mode target --tid 2 -T
> iqn.2013-04.net.issuestechnology:itsan002.issuestechnology.net
>
> This created a controller with SCSI ID of 00020000 and SCSI SN of
> beaf3298, but once I put back my targets.conf, it reverted back to
> 00010000 and beaf10 for the controller.
>
> Clay Goss
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