[Drbd-dev] Behaviour of verify: false positives -> true positives

Lars Ellenberg lars.ellenberg at linbit.com
Tue Sep 30 22:10:16 CEST 2008

On Thu, Sep 11, 2008 at 11:25:12AM +0200, Lars Ellenberg wrote:
> On Tue, Sep 09, 2008 at 04:02:30PM +0200, schoebel wrote:


> > Now I am reasoning on different solutions. Please comment.
> > 
> > Here are just some brainstorming ideas, without judging on their quality (this 
> > will come later):


> how about holding a ring buffer of pinned pages,
> say "drbd max-buffer" pages plus some,
> and in drbd_make_request,
> memcpy(ring buffer, submitted data)
> then checksum that,
> and submit it to localdisk as well as to tcp stack.
> as these are now "private" data buffers,
> the "application" cannot possibly modify them in-flight.

have you made any progress on that matter?

shall we further discuss whether or not it should be "fixed" (in drbd),
and if so, how?

or have you decided to just move a long?

: Lars Ellenberg                
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

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