iSCSI: Send Targets and Report Portal Groups

["Joe Czap" <zapper@us.ibm.com>]

SendTargets assumes that most initiators will need to discover and login to
multiple targets.  Given this assumption, the argument for including
SendTargets
seems pretty strong.  It's simplicity allows any implementation to offer a
discovery
mechanism that would ease the burden of configuring target connectivity
information
on initiators.

Initiators that only need to discover a single target name/address are not
helped much by SendTargets. Although these initiators are not broken by
SendTargets
either.

I also agree that leaving it in increases the likelihood that other
features will creep in,
but I think that  the value gained by having SendTargets is worth the risk.

Joe Czap
IBM Storage Networking
zapper@us.ibm.com