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From: Eric Sandeen <sandeen@sandeen.net>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: xfs@oss.sgi.com
Subject: Re: What are the correct mkfs.xfs parameters for a lying WD-EARS HDD?
Date: Mon, 08 Mar 2010 18:55:45 -0600	[thread overview]
Message-ID: <4B959C91.70506@sandeen.net> (raw)
In-Reply-To: <yq1vdd68j1w.fsf@sermon.lab.mkp.net>

Martin K. Petersen wrote:
>>>>>> "Eric" == Eric Sandeen <sandeen@sandeen.net> 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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      reply	other threads:[~2010-03-09  0:54 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-08 22:10 What are the correct mkfs.xfs parameters for a lying WD-EARS HDD? Matthias Schniedermeyer
2010-03-08 22:45 ` Eric Sandeen
2010-03-08 23:47   ` Matthias Schniedermeyer
2010-03-09 21:41     ` Matthias Schniedermeyer
2010-03-10  8:26       ` Gim Leong Chin
2010-03-08 23:55   ` Martin K. Petersen
2010-03-09  0:55     ` Eric Sandeen [this message]

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