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SubjectRe: [PATCH] 64 bit scsi read/write
On Sun, Jul 15, 2001 at 09:16:09AM -0400, Ken Hirsch wrote:

The first technique is not sufficient with modern disk
controllers, which may reorder sector writes within a block. A
checksum, especially a robust CRC32, is sufficient, but rather

So you write the number to the start and end of each sector, or, you
only assume sector-wide 'block-sizes' for integrity.

A 32-bit CRC is plenty cheap enough on modern CPUs and especially
considering how often you need to calculate it.

Mohan has a clever technique that is computationally trivial and
only uses one bit per sector:

Unfortunately, it's also patented:

Perhaps IBM will clarify their position with respect to free
software and patents in the upcoming conference.

Wow... pretty neat, but fortunately not necessary.

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