On 09/30/05 20:33, Jeff Garzik wrote:
> Luben Tuikov wrote:
>
>>But none of the ideas: 64 bit LUN, HCIL removal, etc.,
>>were accepted with "submit a patch".
>
>
> I concede this may have been the response in the past. Its not, now.
>
>
>
>
>>>So you're saying fixing the current SCSI subsystem once *now* costs
>>>more than applying all *future* SCSI fixes to _two_ SCSI subsystems,
>>>handling bug reports for _two_ SCSI subsystems, etc.
>>
>>
>>I'm saying that the current "old" one is already obsolete,
>>when all you have is a SAS chip on your mainboard.
>>
>>All you need is a small, tiny, fast, slim SCSI Core.
>
>
> Then don't use it at all. Write a block driver, if you really feel we
> need two SCSI cores.
>
>
>
>>Politics: "Nah, whatever you say, specs are *crap* and we'll
>>do it our way. We are not interested in your way, even if it
>>were better. Oh, and BTW, REQUEST SENSE clears ACA and LUN
>>is a u64."
>
>
> This is a misrepresentation. -We- understand the stuff you have posted.
>
> But you continue to demonstrate that you simply do not understand the
> existing SCSI core code.
>
> The SAS transport class supports commonality across all SAS
> implementations. This includes both MPT and Adaptec 94xx.
>
> SAS transport class + libsas supports software implementations of SAS,
> including transport layer management. This includes Adaptec 94xx but
> NOT MPT.
You almost get it right, other than the layering infrastructure.
The SAS Transport Layer is a layer in its own right. It is not
a "libsas".
MPT and open transport a very different, one hides the transport,
i.e. the transport layer is in firmware; the other exposes it
and needs a transport layer. See the pictures here:
http://marc.theaimsgroup.com/?l=linux-kernel&m=112810649712793&w=2
Luben
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
