[libvirt] libvirt should not disable auto_login of iscsi-targets that are *not* used by libvirt

[John Ferlan]

On 05/01/2016 01:10 PM, Fritz Elfert wrote:
> Hi, Cole Robinson asked me to post the attached patch here.
> For more info, see https://bugzilla.redhat.com/show_bug.cgi?id=1331552
> 
> Cheers
>  -Fritz
> 
> 
> 
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Instead of sending as an attachment, please use 'git send-email', see
http://libvirt.org/hacking.html

I found that the patch doesn't compile:

make[3]: Entering directory '/home/jferlan/git/libvirt.work/src'
  CC       util/libvirt_util_la-viriscsi.lo
util/viriscsi.c: In function 'virISCSIScanTargets':
util/viriscsi.c:391:33: error: unused parameter 'initiatoriqn'
[-Werror=unused-parameter]
                     const char *initiatoriqn,
                                 ^
cc1: all warnings being treated as errors


That initiatoriqn is somewhat of a 'hidden' feature (I'm not sure I
could describe it well enough), but the XML that would be parsed is
something like:

<pool type="iscsi">
  <name>multiiqn</name>
  <source>
    <host name="192.168.122.1"/>
    <device path="iqn.2014-12.com.yy:server.target1"/>
    <initiator>
      <iqn name="iqn.2014-12.com.yy:server.target3"/>
    </initiator>
  </source>
  <target>
    <path>/dev/disk/by-path</path>
  </target>
</pool>


The virISCSITargetAutologin call that you removed would add that to the
command line in 'virISCSIConnection()' as an '--interface' parameter.

So the question becomes is it necessary?  If not, then there's some more
work to remove it since a few virISCSIScanTargets() callers expect to
pass it.  If so, then something would need to be added to the ISCSIADM
command in virISCSIScanTargets to add that.

In either case, a v2 is going to be needed.

Tks -

John