Bob Friesenhahn wrote:
> On Wed, 1 Oct 2008, Ahmed Kamal wrote:
>> So, I guess this makes them equal. How about a new "reliable NFS" protocol,
>> that computes the hashes on the client side, sends it over the wire to be
>> written remotely on the zfs storage node ?!
> 
> Modern NFS runs over a TCP connection, which includes its own data 
> validation.  This surely helps.

Less than we'd sometimes like :-)  The TCP checksum isn't
very strong, and we've seen corruption tied to a broken
router, where the Ethernet checksum was recomputed on
bad data, and the TCP checksum didn't help.  It sucked.

Rob T
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