Subject: Re: "ide=reverse" do we still need this?
From: Michael Ellerman <michael@ellerman.id.au>
Reply-To: michael@ellerman.id.au
To: Rene Herman <rene.herman@keyaccess.nl>
Cc: Greg KH <greg@kroah.com>, bzolnier@gmail.com, muli@il.ibm.com,
       jdmason@kudzu.us, linux-ide@vger.kernel.org,
       linux-pci@atrey.karlin.mff.cuni.cz, linux-kernel@vger.kernel.org,
       discuss@x86-64.org
In-Reply-To: <47B2DD45.7080709@keyaccess.nl>
References: <20080213001506.GA13933@kroah.com>
	 <47B24AB3.3040009@keyaccess.nl> <20080213044436.GB10101@kroah.com>
	 <47B2DD45.7080709@keyaccess.nl>
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Date: Wed, 13 Feb 2008 23:16:36 +1100
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On Wed, 2008-02-13 at 13:06 +0100, Rene Herman wrote:
> On 13-02-08 05:44, Greg KH wrote:
>=20
> >> While details escape me somewhat again at the monment, a few months ag=
o
> >> I was playing around with a PCI Promise IDE controller and needed
> >> ide=3Dreverse to save me from having to switch disks around to still h=
ave
> >> a bootable system.
> >>=20
> >> Or some such. Not too clear anymore, but I remember it saved the day.
> >=20
> > You couldn't just change the boot disk in grub?
> >=20
> > Or use an initramfs and /dev/disk/by-id/ to keep any future moves stabl=
e?
>=20
> No. The thing is that you need these kinds of hacks while messing with ol=
d=20
> systems, building and stripping them, often in recovery type of situation=
s.
>=20
> As said (same as the other person I saw reacting) details of what was mos=
t=20
> decidedly needed last time around escape me at the moment, but ide=3Dreve=
rse=20
> is the kind of hack that saves one hours of unscrewing computer cases and=
=20
> switching disks around while building stuff, making quick tests, doing=20
> recovery...
>=20
> If it must go for the greater architectural good, so be it, but it's the=20
> type of thing that's used specifically in the situations where you don't=20
> 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

--=20
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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