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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: iscsi : OpParmresetOpParmReset is the only way we have now to rest a negotiation in FFP (public or vendor specific). The restriction about R2T is related to a deadlock that can result when you change from no to yes. Julo "BURBRIDGE,MATTH EW To: Julian Satran/Haifa/IBM@IBMIL, (HP-UnitedKingdo ips@ece.cmu.edu m,ex2)" cc: <matthew_burbrid Subject: RE: iscsi : OpParmreset ge@hp.com> Sent by: owner-ips@ece.cm u.edu 24-09-01 13:36 Please respond to "BURBRIDGE,MATTH EW (HP-UnitedKingdo m,ex2)" Is OpParmReset still needed now that there is no operational parameter negotiation until after the security phase? Why would both sides negoitiate a set of parameters only for one side to reset. Surely if one side during login is not happy then it should close the connection. In FFP, as there is no way to re-negotiate (after the OpParmReset) again if one side is not happy then should it not close the connection and start a new one. Also if in FFP, if OpParmReset is sent then does it just reset those parameters that can be negoiated during FFP and not those restricted to the login phase? If so would it be easier to negotiate those parameters using the explicit name (e.g. InitialR2T) and remove the restriction of (example) "Once set to no, it can not be set back to yes" - as this is what using OpParmReset permits. Matthew -----Original Message----- From: Julian Satran [mailto:Julian_Satran@il.ibm.com] Sent: Friday, September 21, 2001 4:34 PM To: ips@ece.cmu.edu Subject: Re: iscsi : OpParmreset Santosh, The main purpose of this key was to explicitly cancel the effects of a running negotiation and restart anew. As the draft stands now there is no much difference between the two - but on basic principles the purposes are different (as you well stated). We may change the value to be: OpParmReset=<default|current> to accommodate both semantics. Julo Santosh Rao <santoshr@cup. To: IPS Reflector <ips@ece.cmu.edu> hp.com> cc: Sent by: Subject: iscsi : OpParmreset owner-ips@ece. cmu.edu 20-09-01 22:19 Please respond to Santosh Rao All, Please refer the definition of OpParmReset login key. " 30 OpParmReset OpParmReset enables an Initiator or Target to request the operational parameters to be reset to the values they had before the negotiation." I suggest that the definition be re-worded to state that the OpParmReset enables an initiator or target to reset the operational parameters to their DEFAULT VALUES. [instead of the current definition that states that the parameters are reset to the values they had prior to the current negotiation.] The current definition requires the initiator to maintain 2 sets of operational parameter values, the current and the previous. In the case where initiator is just booting up, if the target sets OpParmReset to "yes", the initiator does not know what to set the op params to, since it has lost its prior state information. Comments ? Thanks, Santosh - santoshr.vcf
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