From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Evans Subject: Re: Linux mdadm superblock question. Date: Sun, 14 Feb 2010 12:07:45 -0800 Message-ID: <4877c76c1002141207s7bac4275xd12ed75e46a670c4@mail.gmail.com> References: <201002140251.59668.volkerarmin@googlemail.com> <4877c76c1002132002s20d942c3i7cee5418cdcf369c@mail.gmail.com> <20100214193406.GA15722@khazad-dum.debian.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <20100214193406.GA15722@khazad-dum.debian.net> Sender: linux-kernel-owner@vger.kernel.org To: Henrique de Moraes Holschuh Cc: Volker Armin Hemmann , linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org List-Id: linux-raid.ids On Sun, Feb 14, 2010 at 11:34 AM, Henrique de Moraes Holschuh wrote: > On Sat, 13 Feb 2010, Michael Evans wrote: >> I remember hearing that 1.x had /no/ plans for kernel level >> auto-detection ever. =A0That can be accomplished in early-userspace >> leaving the code in the kernel much less complex, and therefore far >> more reliable. > > Yes, it is far more reliable kernel side, if only because it doesn't = do > anything. > > But the userspace reliability is _not_ good. =A0initrds are a source = of > problems the moment things start to go wrong, and that's when they ar= e not > the problem themselves. > > And the end result is a system that needs manual intervention to get = its > root filesystem back. > > In my experience, every time we moved critical codepaths to userspace= , we > ended up decreasing the *overall* system reliability. > > -- > =A0"One disk to rule them all, One disk to find them. One disk to bri= ng > =A0them all and in the darkness grind them. In the Land of Redmond > =A0where the shadows lie." -- The Silicon Valley Tarot > =A0Henrique Holschuh > Maybe you'd like a simple, easy to customize initramfs creator. That's exactly what I was aiming for when I made AEUIO https://sourceforge.net/projects/aeuio There are some things that could use improvement, but if your system can boot without loading modules it should be more than sufficient even across kernel versions.