linux-kernel - Re: "ide=reverse" do we still need this?

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Message-Id: <1202904996.6974.11.camel@concordia>
Date:	Wed, 13 Feb 2008 23:16:36 +1100
From:	Michael Ellerman <michael@...erman.id.au>
To:	Rene Herman <rene.herman@...access.nl>
Cc:	Greg KH <greg@...ah.com>, bzolnier@...il.com, muli@...ibm.com,
	jdmason@...zu.us, linux-ide@...r.kernel.org,
	linux-pci@...ey.karlin.mff.cuni.cz, linux-kernel@...r.kernel.org,
	discuss@...-64.org
Subject: Re: "ide=reverse" do we still need this?

On Wed, 2008-02-13 at 13:06 +0100, Rene Herman wrote:
> On 13-02-08 05:44, Greg KH wrote:
> 
> >> While details escape me somewhat again at the monment, a few months ago
> >> I was playing around with a PCI Promise IDE controller and needed
> >> ide=reverse to save me from having to switch disks around to still have
> >> a bootable system.
> >> 
> >> Or some such. Not too clear anymore, but I remember it saved the day.
> > 
> > You couldn't just change the boot disk in grub?
> > 
> > Or use an initramfs and /dev/disk/by-id/ to keep any future moves stable?
> 
> No. The thing is that you need these kinds of hacks while messing with old 
> systems, building and stripping them, often in recovery type of situations.
> 
> As said (same as the other person I saw reacting) details of what was most 
> decidedly needed last time around escape me at the moment, but ide=reverse 
> is the kind of hack that saves one hours of unscrewing computer cases and 
> switching disks around while building stuff, making quick tests, doing 
> recovery...
> 
> If it must go for the greater architectural good, so be it, but it's the 
> type of thing that's used specifically in the situations where you don't 
> have stable, well arranged (or known!) setups to begin with.

I might be off the deep end, but isn't this what
Documentation/feature-removal-schedule.txt is for?

cheers

-- 
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person

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