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SubjectRe: 3.0+ NFS issues (bisected)
On 18.08.2012 15:13, J. Bruce Fields wrote:
> On Sat, Aug 18, 2012 at 10:49:31AM +0400, Michael Tokarev wrote:
[]
>> Well. What can I say? With the change below applied (to 3.2 kernel
>> at least), I don't see any stalls or high CPU usage on the server
>> anymore. It survived several multi-gigabyte transfers, for several
>> hours, without any problem. So it is a good step forward ;)
>>
>> But the whole thing seems to be quite a bit fragile. I tried to follow
>> the logic in there, and the thing is quite a bit, well, "twisted", and
>> somewhat difficult to follow. So I don't know if this is the right
>> fix or not. At least it works! :)
>
> Suggestions welcomed.

Ok...

Meanwhile, you can add my
Tested-By: Michael Tokarev <mjt@tls.msk.ru>

to the patch.

>> And I really wonder why no one else reported this problem before.
>> Is me the only one in this world who uses linux nfsd? :)
>
> This, for example:
>
> http://marc.info/?l=linux-nfs&m=134131915612287&w=2
>
> may well describe the same problem.... It just needed some debugging
> persistence, thanks!

Ah. I tried to find something when I initially
sent this report, but weren't able to. Apparently
I'm not alone with this problem indeed!

Thank you for all the work!

/mjt


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