Re: Mysterious stale cache

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On November 20, 2010 9:07:27 pm FUJITA Tomonori wrote:
> On Wed, 17 Nov 2010 17:23:57 -0500
>
> Neil Skrypuch <neil@xxxxxxxxxxxxxx> wrote:
> > Ultimately, my question is twofold:
> >
> > 1) Is it intentional that rdwr does not use O_DIRECT?
>
> Yes, rdwr wants to exploit page cache.
>
> btw, with the newer versions, you can tell rdwr to use O_DIRECT.

You're right, it looks like this was added in 1.0.7 with the --bsoflags 
switch.

Barring that, it seems that it would be safe to force O_DIRECT on in the RHEL 
6 version (1.0.4-3.el6) of stgt, do you agree?

> > 2) Should RHEL 5 clients be able to connect successfully using aio to
> > RHEL 6 targets?
>
> I think so.

Should I file a bug somewhere then, or are these versions too old to care 
about?

- Neil
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