Reporting Logical Block Size==Physical Block Size

Martin K. Petersen martin.petersen at
Wed Dec 18 08:55:40 PST 2013

* From the T10 Reflector (t10 at, posted by:
* "Martin K. Petersen" <martin.petersen at>
>>>>> "Mike" == Mike Berhan <mikeb at> writes:
Mike> My issue is that I would like a way for this device to
Mike> definitively state that the logical size equals the physical size.
Why is that important? If the physical block exponent is zero the host
will inevitably perform I/O in multiples of the logical block size.
Martin K. Petersen	Oracle Linux Engineering
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