|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: iSCSI: version 0.6 - Query?Hi, > This is a very good question. If "silently ignore" means that at the > time of receipt the target should not attempt to qualify the receipt of > the command at the time it received it, but instead attempt to resolve > this after the MaxCmdSN has been sent, then I would say it makes sense, > but your question interests me with regards to recovery. Since section > 6.1 requires Targets to reject PDUs in a session with format errors > (assuming a misaligned CmdSN constitutes a format error) then it would > seem that this section on page 12 is not in agreement with recovery. I didnot see it explicitly stated in section 6.3 as it is done for DATA sequence number and STATUS sequence number. That is what i am expecting to be corrected in the subsequent revision if everybody aggrees. And also remove the page 12 statement about "siliently Ignoring". Thanks sureshtk > > -----Original Message----- > From: Tanjore K. Suresh [mailto:Tanjore.Suresh@Sun.COM] > Sent: Sunday, June 10, 2001 12:26 AM > To: ips@ece.cmu.edu > Subject: iSCSI version 0.6 - Query? > > Hi, > > Page 12, Last paragraph. > > Regarding the command sequence number. > > " The target MUST silently *ignore* any command outside this range or > duplicates with in the range that have not been flagged with the retry > bit > (the X bit in the opcode)" > > > Why ignore commands which are not in the expected range or duplicates > with in the range? This type of ignoring could cause initator to > cause some unnecessary recovery activity which could/may end up to > be not good for the target which is hale and healthy. > > Such a command could have been errorneously numbered or errorneously > checked for this condition or errnoneously delivered with sequence > number change because of problems transporting it over the internet > fabric. > > Hence, my opinion is appropriate error need to be returned for such > command > instead of ignoring. > > > Comments? > > > Thanks > sureshtk > > > I > > >
Home Last updated: Tue Sep 04 01:04:27 2001 6315 messages in chronological order |