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Re: [Xen-devel] [GIT PULL] for-2.6.32/bug-fixes

To: "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>
Subject: Re: [Xen-devel] [GIT PULL] for-2.6.32/bug-fixes
From: "Jan Beulich" <JBeulich@xxxxxxxxxx>
Date: Wed, 18 May 2011 15:31:35 +0100
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>>> On 18.05.11 at 15:24, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
>> >Well, req->ns_segments = 0, so nseg is zero, which means all
>> >of those for loops never get executed.
>> This you say is the case for the request you saw the failure with, or
>> *all* barrier requests? In the latter case, what do you conclude this
> Good question. It was the first barrier request sent when guest tried to
> mount the filesystem. I will instrument the code to see what the other
> barriers contained when they were sent.

That wouldn't tell you anything if they're all empty, as there's nothing
preventing other guests (including other guest OSes) to still send
non-empty ones - after all the protocol allows for this.


>> from?

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