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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: iSCSI: naming/LUN viewsPierre, In my view, one should get the same LU view in your situation because there is effectively no other information by which the target might present a different view. Namely, the target (that creates/enforces the view) is the entity scoped by the TargetWWUI. It uses the Initiator WWUI to construct that LU view. That might be constructed by rules established via SCSI access controls (and yes, the InitiatorWWUI is the right mapping to TransportID though that has not been formalized anywhere yet). This has some interesting implications. Within the context of a single SESSION established through multiple connections, there is only the one I_T nexus. But we can also establish multiple sessions between the same InitiatorWWUI and TargetWWUI. As far as access controls are concerned, the views should be identical. As for other properties of I_T nexus', e.g., reservations, the jury is still out. Jim Hafner Pierre Labat <pierre_labat@hp.com>@ece.cmu.edu on 02-27-2001 10:38:26 AM Sent by: owner-ips@ece.cmu.edu To: ips@ece.cmu.edu cc: Subject: iSCSI: naming/LUN views Mark (Bakke), After going through the naming/discovery drafts, a question came to my mind: Does several connections flowing through several portals but using the same initiator WWUI and target WWUI will see the same thing on the target? I mean by same thing: same LUs associated to the same LUNs. I guess that the initiator WWUI acts as an transportID (SCSI access control) and gives the same LUs view independently of the portal used. Is it the case? If it is not the case, the entity that creates multiconnections sessions will need out of band information to know if the 2 portals can be used for a same session or will have to do the painfull job to compare the LU views from the two portals with no guarantee that the views could not change in the future. Regards, Pierre
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