linux-kernel - Re: [PATCH v4 1/2] dm-unstripe: unstripe RAID 0/dm-striped device

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Message-ID: <20171218193249.GA6149@redhat.com>
Date:   Mon, 18 Dec 2017 14:32:49 -0500
From:   Mike Snitzer <snitzer@...hat.com>
To:     Scott Bauer <scott.bauer@...el.com>
Cc:     Randy Dunlap <rdunlap@...radead.org>, dm-devel@...hat.com,
        agk@...hat.com, linux-kernel@...r.kernel.org,
        keith.busch@...el.com, jonathan.derrick@...el.com
Subject: Re: [PATCH v4 1/2] dm-unstripe: unstripe RAID 0/dm-striped device

On Mon, Dec 18 2017 at  1:52pm -0500,
Scott Bauer <scott.bauer@...el.com> wrote:

> 
> > > +config DM_UN_STRIPE
> > > +       tristate "Transpose IO to individual drives on a raid device"
> > > +       depends on BLK_DEV_DM
> > > +       ---help---
> > > +	  Enable this feature if you with to unstripe I/O on a RAID 0
> > > +	  device to the respective drive. If your hardware has physical
> > > +	  RAID 0 this module can unstripe the I/O to respective sides.
> > 
> > What does "sides" mean above?
> 
> Should say, "members". There's also an alternative patch set out by Heinz
> that I am currently testing/writing comments for. It looks like we'll use
> his version after I submit my comments (IE take the stuff I put in my v4
> to fix your comments).

Can you be more specific?  I've not seen anything from Heinz.

I've been reviewing your v4 and modified it to match dm-stripe.c more
(like Alasdair asked for).

Mike