iSCSI: revised error recovery hierarchy

["Mallikarjun C." <cbm@rose.hp.com>]

All:

Here's a revised error recovery layering proposal.

http://storage-arch.hp.com/iscsi_hierarchy-2.pdf

Please review and offer comments.  The earlier London
proposal slides are on the same website for your reference.

I believe this revised proposal balances the desire 
to reduce the # of levels with the need to ensure that
we don't bundle multi-connection functionality into
single-connection error recovery.  IOW, the revised
level "2" deals exclusively with connection failover
capabilities and implementations supporting only single
connection sessions do not ever have to support 
level "2".

Since publication of rev08 appears to be only
by this weekend and there seems to some preference
towards fewer number of levels anyway, my current 
thinking is to incorporate this revised hierarchy 
into rev08 for a detailed WG review and debate.

Thanks.
-- 
Mallikarjun 


Mallikarjun Chadalapaka
Networked Storage Architecture
Network Storage Solutions Organization
MS 5668	Hewlett-Packard, Roseville.
cbm@rose.hp.com