Re: [PATCH] aoe: end barrier bios with EOPNOTSUPP
From: Jens Axboe
Date: Thu Sep 10 2009 - 15:50:27 EST
On Thu, Sep 10 2009, Ed Cashin wrote:
>
On Thu Sep 10 03:48:22 EDT 2009, jens.axboe@xxxxxxxxxx wrote:
>
> On Wed, Sep 09 2009, Ed Cashin wrote:
>
...
>
> > If I had a reproducable problem case that the barrier implementation
>
> > could fix, it would be very helpful.
>
>
>
> Depending on timing and the other end, it may not be easy to reproduce.
>
> But the problem is indeed real, so I think you should just add the
>
> proper barrier implementation instead of spending too much time trying
>
> to create a reproducable problem. By the time you get there, you could
>
> have fixed it many times over :-)
>
>
OK. I will start work on it. But if anybody can give me a torture
>
test that works on aoe devices, I'll be grateful.
>
>
I think the EOPNOTSUPP patch is good for the for-next aoe quilt tree,
>
while the new barrier support will be good for 2.6.32.
.31 is already out, so there's plenty of time to fix it for .32 for
real. I don't mind putting in the temporary fix in the mean time,
though.
--
Jens Axboe
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