AoE for 4.x

Sam sah at softcardsystems.com
Thu Sep 30 06:05:21 PDT 2004


I haven't heard any major objections to my getting a major
number -- can someone please step up and help me out?

Sam

On Thu, 23 Sep 2004, Stephan Uphoff wrote:

> Since a complete disk operation in AoE is encapsulated in a single
> Ethernet request/response pair - The data size of a read/write operation
> is smaller than a single page.
>
> I don't think any existing framework can deal with this efficiently.
>
> 	Stephan
>
> On Thu, 2004-09-23 at 17:20, Julian Elischer wrote:
>> you could look at the sbp driver that is part of the firewire code..
>> I think that may be the closest analog.
>>
>>
>> Sam wrote:
>>
>>> On Thu, 23 Sep 2004, Julian Elischer wrote:
>>>
>>>> I think that if you have a working driver we can assign you a number.
>>>> I do have some questions however..
>>>>
>>>> this is AoE.. is it not possible at all to combne it with either the CAM
>>>> framework (such as the atapicam stuff) or the existing ATA stuff..
>>>> Don't take this the wrong way.. it's just a question..
>>>> CAM is being used to talk to drives over firewire, usb, ata, scsi,
>>>> fibrechannel.
>>>> it would seem that to unify this would be something that we should
>>>> look at..
>>>> Of course CAM itslef is showing its age in soem places and it could
>>>> do with some work itself..
>>>
>>>
>>> It might be possible to plug into the CAM; I only briefly
>>> glanced at it and it didn't appear appropriate.  The ATA
>>> layer definitely isn't as parts of ATA don't make sense
>>> in this context (Read DMA, Read Multiple, eg) and AoE
>>> devices don't conform to the simple hardware probe/attach
>>> methodology (as I understand it).
>>>
>>> I would love to be proved wrong.  I'm always willing to
>>> try a new approach if it's demonstrably better.
>>>
>>> Sam
>>
>>
>> _______________________________________________
>> freebsd-arch at freebsd.org mailing list
>> http://lists.freebsd.org/mailman/listinfo/freebsd-arch
>> To unsubscribe, send any mail to "freebsd-arch-unsubscribe at freebsd.org"
>>
>>
>
>


More information about the freebsd-arch mailing list