Re: NFS problem - close to open cache consistency broken ?

[Thomas Stockheim <tommi@bub-agema.de>]

Robert Gordon wrote:
> 
> On Sep 15, 2005, at 10:14 AM, Thomas Stockheim wrote:
> 
>> Lever, Charles wrote:
>>
>>>>> peter, do you happen to know how the solaris NFS client
>>>>
>>>>
>>>> behaves when an
>>>>
>>>>> application holds a file open like this?
>>>>>
>>>>> close-to-open is a convention, not a specification, so it's
>>>>
>>>>
>>>> really up to
>>>>
>>>>> the client developers to implement what they think is right.  i'm
>>>>> guessing that the Linux client is working as designed here.  i'm  not
>>>>> convinced it's very *convenient* behavior, though.
>>>>>
>>>>>
>>>>>
>>>>
>>>> Well, linux did not allways do this - same directory mounted on  an 
>>>> older redhat with kernel 2.4.2 and its working fine.
>>>
>>> those ancient kernels don't support close-to-open.  that was  introduced
>>> around 2.4.20.
>>
>> I don't know what model they had instead, but it worked better
>> for us. I've been running linux clusters for 5 years or so and
>> never had this problem before.
> 
> 
> so there is the 'nocto' option (i assume) for the mount that would
> restore the old behavior -- it would prove that was the culprit
> 
Nocto was one of the first mount options I tried - it did not help.

-- 

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