DragonFly kernel List (threaded) for 2007-10
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DragonFly kernel List (threaded) for 2007-10
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Re: HAMMER filesystem update - design document


To: Francois Tigeot <ftigeot@xxxxxxxxxxxx>
From: Michael Neumann <mneumann@xxxxxxxx>
Date: Thu, 11 Oct 2007 09:55:09 +0200

Francois Tigeot schrieb:
On Wed, Oct 10, 2007 at 12:33:45PM -0700, Matthew Dillon wrote:
    Ok, here's the final design document that I am now implementing.
    Again, I expect most or all of these features to be ready and the
    filesystem to be beta-quality by the December release.

Wow, this seems pretty good.


What about data corruption issues ?

Have you thought about implementing some sort of checksumming mechanism ?

We cannot assume hardware to be absolutely reliable. There may be some
silent corruption going on the disk or network layers, etc...

According to Matt's design document:


    "All information in a HAMMER filesystem is CRCd to detect
     corruption."

Regards,

Michael



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