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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: iSCSI: Re: iSCSI & Linked CommandsThis thread on linked commands has no relevance to iSCSI any longer, as has been mentioned several times by now. - Santosh Douglas Otis wrote: > > Robert, > > Relative addressing is not defined because that is the only means of > addressing. Relative to the last block. > > Doug > > > Doug, > > > > Relative addressing is not defined in the SSC command set nor > > in the SPC command set for tapes. > > > > Bob > > > > > -----Original Message----- > > > From: Douglas Otis [mailto:dotis@sanlight.net] > > > Sent: Monday, April 23, 2001 9:36 AM > > > To: Stephen Bailey; ips@ece.cmu.edu > > > Subject: RE: iSCSI: Re: iSCSI & Linked Commands > > > > > > > > > Stephen, > > > > > > Unlike random access devices, sequential access devices operate with > > > relative addressing. For random access devices, this is a > > > seldom used > > > option. There is a requirement to bind commands together to > > > ensure order of > > > execution on these devices. By popular, you mean not sequential? > > > > > > Doug > > > > > > > > > > Julian, > > > > > > > > > According to your logic no FCP implementation can use > > > linked commands? > > > > > Is this true for all OS's? Is it a verified fact or foloklor? > > > > > > > > In my experience it's fact. I have never used a SCSI > > > stack which both > > > > supported AND used linked commands. Like some others > > > here, I always > > > > assumed AIX might :^) Ralph has pointed out that T10 is well aware > > > > that the feature is not popular. There are other ways of > > > > accomplishing the same thing that are less likely to blow > > > up in your > > > > face. > > > > > > > > > Is it so also for the new MS StorPort driver? > > > > > > > > I don't know, but I'd be really surprised if they did use linked > > > > commands. You have to be pretty nuts to rely on a feature > > > that's not > > > > even exercised by most SCSI implementations. > > > > > > > > Steph > > > > > > > > > > > > begin:vcard n:Rao;Santosh tel;work:408-447-3751 x-mozilla-html:FALSE org:Hewlett Packard, Cupertino.;SISL adr:;;19420, Homestead Road, M\S 43LN, ;Cupertino.;CA.;95014.;USA. version:2.1 email;internet:santoshr@cup.hp.com title:Software Design Engineer x-mozilla-cpt:;21088 fn:Santosh Rao end:vcard
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