>>>>> "Konrad" == Konrad Rzeszutek <konrad@xxxxxxxxxxxxxxx> writes:
Konrad> The read_capacity_16 sets the sdkp->hw_sector_size to
Konrad> sector_size:
> @@ -1402,6 +1413,7 @@ static int read_capacity_10(struct scsi_
^^^^^^^^^^^^^^^^
That's the fallback setting for devices that only respond to READ
CAPACITY(10).
Konrad> That function also returns that value, which sd_read_capacity
Konrad> assigns to the sector_size variable. So when the check for
Konrad> sdkp->hw_sector_size inequality is reached, it is skiped as
Konrad> sdkp->hw_sector_size == sector_size. No?
For devices that support READ CAPACITY(16) (and are thus capable of
reporting physical block size) the two values may differ and the message
is printed.
Konrad> Is that doing a read_capacity_16 or _10?
16.
>> The protocols have been referring to logical blocks for ages.
Konrad> Do they refer to physical blocks as well?
Yep.
--
Martin K. Petersen Oracle Linux Engineering
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