[Twg] T10 End-to-End Data Integrity HLD

Alex Tomas bzzz.tomas at gmail.com
Tue Apr 17 18:11:36 UTC 2012


On Tue, Apr 17, 2012 at 10:02 PM, Nathan Rutman
<Nathan_Rutman at xyratex.com> wrote:
> As far as Lustre is concerned, I view the T10 method as more of a
> out-of-band data transfer mechanism.  When you say single framework, you
> imply that the checksum is performed at the same point in the code path, but
> I think that is fundamentally different between Merkle tree/ZFS (in core)
> and T10 (in hardware).

I'd hope core Lustre just doesn't care much passing checksums down to
specific OSD,
which then attach them to arc buffers (like ZFS) or to BIOs (like ldiskfs) ?

thanks, Alex


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