From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Brown Subject: Re: Bug#567468: md homehost Date: Thu, 25 Feb 2010 09:23:38 +1100 Message-ID: <20100225092338.5e20f8df@notabene.brown> References: <20100219004237.GC25162@lapse.rw.madduck.net> <20100219091619.GA2964@lazy.lzy> <20100221174007.GB19058@lapse.rw.madduck.net> <20100221201304.GB2570@lazy.lzy> <20100222091632.GE2641@lapse.rw.madduck.net> <20100223133028.279e0174@notabene.brown> <20100223062700.GB19666@lapse.rw.madduck.net> <87635opfwb.fsf@frosties.localdomain> <20100223081636.GD19730@lapse.rw.madduck.net> <87y6iilqsu.fsf@frosties.localdomain> <20100224175257.GA7470@darkside.12.kls.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20100224175257.GA7470@darkside.12.kls.lan> Sender: linux-raid-owner@vger.kernel.org To: Mario 'BitKoenig' Holbe Cc: Goswin von Brederlow , 567468@bugs.debian.org, Piergiorgio Sartor , Daniel Reurich , linux-raid List-Id: linux-raid.ids On Wed, 24 Feb 2010 18:52:57 +0100 "Mario 'BitKoenig' Holbe" wrote: > On Wed, Feb 24, 2010 at 02:13:53PM +0100, Goswin von Brederlow wrote: > > grub.cfg (grub2) uses UUID for grub itself. But the kernel can be bootet > > with root=/dev/md0. But in that case where does it get the homehost from > > and since when does kernel raid autoconfig have a homehost? > > The homehost attribute does only exist with v1 superblocks. And there is > no in-kernel auto-assembly for v1 superblocks. > v0.9 superblocks (for which in-kernel auto-assembly is deprecated but > still provided) have no homehost. > Not entirely correct. The 'homehost' is encoded in the uuid of v0.90 metadata, so it does affect them too. in-kernel autodetect does not make use of 'homehost' and so does not protect you from the potential confusions that homehost tries to protect you from. NeilBrown