From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933301AbYEBBwI (ORCPT ); Thu, 1 May 2008 21:52:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752311AbYEBBv5 (ORCPT ); Thu, 1 May 2008 21:51:57 -0400 Received: from web50212.mail.re2.yahoo.com ([206.190.39.176]:32069 "HELO web50212.mail.re2.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1750975AbYEBBv4 (ORCPT ); Thu, 1 May 2008 21:51:56 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:Date:From:Reply-To:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Message-ID; b=YCTgknXjqpctpJpTXpRXeZ3JtbNizqqpqCftNu62F5TLFXgsY5glQJTKnc6BGd0S6FZq/ESVpKu638xmjze6YlPet1bwh776svVZBH0ySaaK/shoIOsrf/mACVYai+6WdLSvi74pZmIJf/WeG8bzYWG4y4OeoB2sYkY7TbKxD48=; X-YMail-OSG: 5yghumAVM1kiSS63KRhdiWM8QWs9Nka0bNN9DbpbFrC_JyYcUxTgcfqGlewxeEh1D5z8l61Q4gQU9llfNrrrXAm49Pa8gCvEvNEoR81RKcLdVeh8T2pzGUBNyg-- X-Mailer: YahooMailWebService/0.7.185 Date: Thu, 1 May 2008 18:51:54 -0700 (PDT) From: Alex Davis Reply-To: alex14641@yahoo.com Subject: Re: Sharing disks amoung multiple software RAIDs To: Justin Piszcz , Kasper Sandberg Cc: linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <1209692359.16523.2.camel@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Message-ID: <73000.21239.qm@web50212.mail.re2.yahoo.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --- On Thu, 5/1/08, Kasper Sandberg wrote: > From: Kasper Sandberg > Subject: Re: Sharing disks amoung multiple software RAIDs > To: "Justin Piszcz" > Cc: "Alex Davis" , linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org > Date: Thursday, May 1, 2008, 9:39 PM > On Thu, 2008-05-01 at 08:50 -0400, Justin Piszcz wrote: > > > > On Thu, 1 May 2008, Alex Davis wrote: > > > > > Is this a bad thing? I'm guessing that it is, > but I want independent > > > confirmation before I spoke to someone I know > who's doing this. > > > > > > Thanks > > > > > > > > > > ____________________________________________________________________________________ > > > Be a better friend, newshound, and > > > know-it-all with Yahoo! Mobile. Try it now. > http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ > > > -- > > > To unsubscribe from this list: send the line > "unsubscribe linux-raid" in > > > the body of a message to > majordomo@vger.kernel.org > > > More majordomo info at > http://vger.kernel.org/majordomo-info.html > > > > > > > What is the use case, why would you want to do that? > > I have seen people on the list do it before, for > example are you going to > > be utilizing both raids at the same time? If so, I > would advise against > > it. > > > > What is the reasoning? > > I do this! > > is this really bad? i would surely like a list of reasons > why.. > > I do it because.. well.. first off, it allows me to have > /boot on > different raidlevel than / or /home without extra disks. > secondly, it allows me to with the same disks use different > filesystems.. for instance, it allows me to have /home > encrypted with > dm-crypt, while still raided.. Not that i would mind > encrypting / > and /home as 1 partition, but it creates a whole slew of > issues with > having to create initrd and stuff.. > > I realize that performance probably suffers abit from this, > but well.. > is there any stability or security wise risk? i mostly use > raid1 and > raid5 only.. > I would guess if the RAIDs are heavily used simultaneously it could cause the disk head actuators to jump around more, causing more wear and tear. ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ