| To: | xfs@xxxxxxxxxxx |
|---|---|
| Subject: | Re: 4k sector drives |
| From: | Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx> |
| Date: | Tue, 20 Jul 2010 15:30:00 -0500 |
| In-reply-to: | <201007202058.35141@xxxxxx> |
| References: | <201007202058.35141@xxxxxx> |
| User-agent: | Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9.1.10) Gecko/20100512 Thunderbird/3.0.5 |
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 |
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