Public bug reported:

When an iSCSI Storage (eg.: SolidFire) uses iSCSI redirects, the initial
login fails, but it just logs "Login authentication failed with target",
while the tcpdump actually shows what exactly was happening. For
example:

1. Ubuntu tries to login to the Target IP (10.5.0.26):
24      8.858756        10.5.0.7        10.5.0.26       iSCSI   252     Login 
Command

2. The Storage (10.5.0.26) replies with:
27      8.860318        10.5.0.26       10.5.0.7        iSCSI   148     Login 
Response (Target moved temporarily)

The iSCSI packet contains "TargetAddress=10.5.0.18:3260", which is the
new iSCSI Portal that we should use:

3. Ubuntu then tries to login to the new portal:
50      9.377491        10.5.0.7        10.5.0.18       iSCSI   252     Login 
Command

4. Which succeeds:
57      9.379082        10.5.0.18       10.5.0.7        iSCSI   156     Login 
Response (Success)


But in /var/log/syslog, the only message that is displayed is:

Jan 22 16:01:52 xenial-initiator iscsid: Login authentication failed
with target iqn.1993-08.org.debian:01:4df860e415a6:redirect

As an enhancement request, it would be good to see the login redirection
being logged into syslog. The same behavior applies to Trusty, Xenial
and Bionic.

The same request has been made upstream, but it has been considered low
priority so far: https://github.com/open-iscsi/open-iscsi/issues/117

** Affects: open-iscsi (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1813822

Title:
  Improve log messages during iSCSI login failures (specially related to
  iSCSI redirection)

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