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Re: What is a recommended XFS sector size for hybrid (512e) advanced for

To: Hillel Lubman <shtetldik@xxxxxxxxx>
Subject: Re: What is a recommended XFS sector size for hybrid (512e) advanced format hard drives?
From: Chris Murphy <lists@xxxxxxxxxxxxxxxxx>
Date: Tue, 6 Jan 2015 23:06:31 -0700
Cc: Eric Sandeen <sandeen@xxxxxxxxxxx>, "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <1564490.3HJmP8WlOV@shtub-cm>
References: <1806495.BCZcrVVEOf@shtub-cm> <2511571.nTXGg0tW6M@shtub-cm> <54ACC472.4010104@xxxxxxxxxxx> <1564490.3HJmP8WlOV@shtub-cm>
Sender: chris@xxxxxxxxxxxxxxxxx
On Tue, Jan 6, 2015 at 10:36 PM, Hillel Lubman <shtetldik@xxxxxxxxx> wrote:

> One is a recent portable WD USB3 drive (elements) and another is a regular
> 3.5" internal AF WD black in an enclosure (also attached through USB3). I
> didn't recently test the case of a drive attached through regular SATA.

A common theme emerges, so far 6 for 6 drives behaving this way are in
USB enclosures. At least one vendor ships an external drive (drive
inside an enclosure) that causes parted to report 4096B/4096B
logical/physical sectors. The drive inside is actually 512e so it's
512B/4096B, and the result of this is that partitioning/formatting it
inside the enclosure means it's completely unreadable outside the
enclosure and vice versa. So cute and adorable.


-- 
Chris Murphy

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