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Re: What are the correct mkfs.xfs parameters for a lying WD-EARS HDD?

To: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
Subject: Re: What are the correct mkfs.xfs parameters for a lying WD-EARS HDD?
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Mon, 08 Mar 2010 18:55:45 -0600
Cc: xfs@xxxxxxxxxxx
In-reply-to: <yq1vdd68j1w.fsf@xxxxxxxxxxxxxxxxxx>
References: <20100308221044.GA17830@xxxxxxx> <4B957E03.9090000@xxxxxxxxxxx> <yq1vdd68j1w.fsf@xxxxxxxxxxxxxxxxxx>
User-agent: Thunderbird 2.0.0.23 (Macintosh/20090812)
Martin K. Petersen wrote:
>>>>>> "Eric" == Eric Sandeen <sandeen@xxxxxxxxxxx> writes:
> 
> Eric> Make sure your partitions, if any, are on 4k boundaries.(*) older
> Eric> fdisk at least won't do this by default, not sure about parted.
> 
> You can use the expert mode in fdisk to ensure that the partition begins
> on a 4KB boundary.

and use -u to give it sector units ...

> 
> Eric> (*)unless the drive has an offset to make 512-sector 63 line up on
> Eric> a nice boundary... in which case I guess you could experiment with
> Eric> perf both ways to be sure...
> 
> EARS is the one that's lying about the physical block size.  It's
> zero-aligned unless somebody messed with the jumper.

Ok, that's good.

Thanks Martin!

-Eric

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