[9fans] aoe initiator!

[9fans] aoe initiator!

[erik quanstrom]

coraid is pleased to announce a plan 9 aoe initiator.
the patch has been submitted as /n/sources/patch/aoe-initiator.

the initiator has been tested with linux vblade, plan 9 vblade, and
coraid sr hardware.  we hope you use it with coraid sr hardware. ☺

there are two parts, the initiator proper, which turns aoe into a
block device and the sdaoe which binds aoe targets to sd devices.

performance is respectable.  with 8k jumbos and two gbe interfaces,
i've seen >175MB/s on a four disk raid0.

enjoy!
- erik

Re: [9fans] aoe initiator!

[Lucio De Re]

> coraid is pleased to announce a plan 9 aoe initiator.
> the patch has been submitted as /n/sources/patch/aoe-initiator.

Could you let us know when it is in fact added to the distribution?

++L

Re: [9fans] aoe initiator!

[Robert Sherwood]

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For the morbidly curious, is there any documentation regarding coraid's use
of plan9 that you all wouldn't mind sharing? I'd love to see how the
decision was made to use plan9, and what features were critical to the
decision making process. It would be an interesting read, for me anyway.

I've poked around on the coraid site, a bit, but I don't see much mention of
plan9.


On 8/9/07, Lucio De Re <lucio@proxima.alt.za> wrote:
>
> > coraid is pleased to announce a plan 9 aoe initiator.
> > the patch has been submitted as /n/sources/patch/aoe-initiator.
>
> Could you let us know when it is in fact added to the distribution?
>
> ++L
>
>

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Re: [9fans] aoe initiator!

[erik quanstrom]

> For the morbidly curious, is there any documentation regarding coraid's use
> of plan9 that you all wouldn't mind sharing? I'd love to see how the
> decision was made to use plan9, and what features were critical to the
> decision making process. It would be an interesting read, for me anyway.
> 
> I've poked around on the coraid site, a bit, but I don't see much mention of
> plan9.

plan 9 is our development environment and infastructure.  currently we run 
kenfs on a modified sr1521 as our fileserver.  we are adding aoe targets to kenfs.

i wasn't here when the decision was made to use plan 9 in the sr products.
so i can't really speak to that.

for my money, though, it's critical that one person can understand the kernel
and it's stable.

- erik

Re: [9fans] aoe initiator!

[Charles Forsyth]

> and it's stable.

or if it's not, at least you stand half a chance of finding and fixing it.

Re: [9fans] aoe initiator!

[erik quanstrom]

On Thu Aug  9 12:57:04 EDT 2007, forsyth@terzarima.net wrote:
> > and it's stable.
> 
> or if it's not, at least you stand half a chance of finding and fixing it.

sorry. that wasn't clear.

i ment stable as in the scheduler doesn't change with the seasons.

- erik

Re: [9fans] aoe initiator!

[Kris Maglione]

On Thu, Aug 09, 2007 at 12:56:06PM -0400, erik quanstrom wrote:
>sorry. that wasn't clear.
>
>i ment stable as in the scheduler doesn't change with the seasons.

It still applies. I can learn all I need about the Plan 9 
scheduler in a matter of minutes, and I can read the code 
without tearing my hair out. If it were to change, chances are, 
someone would write a paper about it first, and it wouldn't wind 
up in the tree on a whim. And it would still be easy to 
understand. If Linux got a new scheduler, I suspect I'd spend at 
least a week staring blindly at it before it started to make 
sense, and I'd have to grep though mailing lists to learn 
anything about it, aside from reading code.

-- 
Kris Maglione

Only a mediocre person is always at their best.