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Re: xfs hardware RAID alignment over linear lvm

To: "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
Subject: Re: xfs hardware RAID alignment over linear lvm
From: Chris Murphy <lists@xxxxxxxxxxxxxxxxx>
Date: Wed, 25 Sep 2013 15:53:24 -0600
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <52435A1B.8040207@xxxxxxxxxxxxxxxxx>
References: <CAE3v2EaODFud_S_BzuSjtwGwuNBXhvL0RiPB1P5QroF45Obwbw@xxxxxxxxxxxxxx> <52435327.9080607@xxxxxxxxxxxxxxxxx> <2F959FD9-EF28-4495-9D0B-59B93D89C820@xxxxxxxxxxxxxxxxx> <52435A1B.8040207@xxxxxxxxxxxxxxxxx>
On Sep 25, 2013, at 3:48 PM, Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx> wrote:
>> 
>> So keeping the example, 3 arrays x 10 data disks, would this be su=512k and 
>> sw=30?
> 
> No.  In this configuration, as far as XFS is concerned LVM doesn't exist
> in the stack because it doesn't change the RAID geometry, so you ignore it.

OK and if this were md linear where the file system definitely would be created 
across all disks?


Chris Murphy
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