Re: Kernel loop(..?) regression (& with/2.6.31-rc6)

From: Christoph Hellwig
Date: Fri Aug 28 2009 - 12:55:39 EST

On Fri, Aug 28, 2009 at 07:23:11AM -0400, Justin Piszcz wrote:
> If both '-o nobarrier' and the patch solves the issue, what is the next
> action that should be taken? Update the documentation to always use
> -o nobarrier for cryptoloop? Or get the patch reverted in mainline?

We'll have to figure out why it causes those problems and how fix them.
-o nobarrier on a loop device is extremly unsafe as you will possible
lose large amounts of log updates in case of a crash.

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