4k sector drives

[Stan Hoeppner]

Michael Monnerie put forth on 7/20/2010 1:58 PM:
> Dear list, I don't know who else to ask this:
> 
> I recently bought 2 new 4k sector drives (WD Caviar Green 2TB, 
> WD20EARS), but Linux kernel 2.6.34.1 still says:
> 
> # blockdev --getss /dev/sdd
> 512
> 
> Shouldn't that be 4096? Where is the problem?

Firmware sector size translation is the problem.  The WD20EARS is apparently
not a native 4096K sector size drive, but a transitional product.  It is 4k
sector size internally but the firmware translates this to 512B sectors to the
OS driver.  It's a hybrid.

Google "WD20EARS sector size"

-- 
Stan