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Date: Wed, 16 Mar 2011 16:45:55 -0400
From: Phillip Susi <psusi@cfl.rr.com>
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Subject: Re: [linux-lvm] Advanced Format disks mixed with regular disks?
Reply-To: LVM general discussion and development <linux-lvm@redhat.com>
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To: LVM general discussion and development <linux-lvm@redhat.com>
Cc: Ron Johnson <ron.l.johnson@cox.net>, Mike Snitzer <snitzer@redhat.com>

On 3/14/2011 1:17 PM, Mike Snitzer wrote:
> Both LVM2 and Device Mapper have been updated to accommodate stacking
> such a mix of drives.
> 
> See this for a bit more detail:
> http://people.redhat.com/msnitzer/docs/io-limits.txt
> 
> Particularly, the "Stacking I/O Limits" section.
> 
> The concern raised for partial (4k) writes to the 512b drive was
> discussed a bit more here: http://lkml.org/lkml/2010/2/22/295

Unfortunately this does not help with the WD EARS model drives ( are
there any other 4kb sector drives on the market now? ), since they lie
and report that they have 512 byte sectors.