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Date: Fri, 27 Mar 2015 10:08:39 -0400
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Subject: Re: pNFS layout, ROC and multiple opens
From: Trond Myklebust <trond.myklebust@primarydata.com>
To: "Mkrtchyan, Tigran" <tigran.mkrtchyan@desy.de>
Cc: linux-nfs list <linux-nfs@vger.kernel.org>
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On Fri, Mar 27, 2015 at 7:24 AM, Mkrtchyan, Tigran
<tigran.mkrtchyan@desy.de> wrote:
>
>
> Hi folks,
>
> we run into following issue:
>
> on a client host we have two processes - A and B.
> Process A opens a file and reads some data:
>
> OPEN -> LAYOUTGET -> READ.
> Notice, that layout has a roc set to true.
>
> Process B opens the same file:
>
> OPEN -> READ.
>
> Client obviously re-used layout information.
> Now, process A closes the file and as a result,
> layout becomes invalid.

No it doesn't. See the errata.

Cheers
  Trond