From owner-freebsd-questions Thu Aug 8 0: 0:35 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DF49F37B400 for ; Thu, 8 Aug 2002 00:00:26 -0700 (PDT) Received: from wantadilla.lemis.com (wantadilla.lemis.com [192.109.197.80]) by mx1.FreeBSD.org (Postfix) with ESMTP id 63E2B43E70 for ; Thu, 8 Aug 2002 00:00:25 -0700 (PDT) (envelope-from grog@lemis.com) Received: by wantadilla.lemis.com (Postfix, from userid 1004) id 060FE8171C; Thu, 8 Aug 2002 16:30:23 +0930 (CST) Date: Thu, 8 Aug 2002 16:30:23 +0930 From: Greg 'groggy' Lehey To: Rob Ellis Cc: Stephen Hoover , Danny Pansters , freebsd-questions@freebsd.org Subject: Re: Questions about vinum and failure of root partition Message-ID: <20020808070022.GC8561@wantadilla.lemis.com> References: <20020807160227.GB53552@web.ca> <20020807170209.GC53552@web.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20020807170209.GC53552@web.ca> User-Agent: Mutt/1.3.99i Organization: The FreeBSD Project Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-418-838-708 WWW-Home-Page: http://www.FreeBSD.org/ X-PGP-Fingerprint: 9A1B 8202 BCCE B846 F92F 09AC 22E6 F290 507A 4223 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Wednesday, 7 August 2002 at 13:02:09 -0400, Rob Ellis wrote: > On Wed, Aug 07, 2002 at 11:15:53AM -0500, Stephen Hoover wrote: >> Subject: Re: Questions about vinum and failure of root partition >> >>> i'm not sure about putting /usr on the vinum mirror as >>> i've seen recommended -- you often want /usr in >>> single user mode. >> >> Now this is getting out of my realm of experience, but why >> is that an issue? I have my /usr mirrored with vinum and when >> I dropped down to single usr mode to do an installworld for >> instance, I just start vinum and mount the volume. > > > i guess i'm anticipating having to go into single user > to deal with problems without running vinum -- for instance, > problems with vinum / remounting partitions? ... maybe > vinum is solid enough that that's not an issue... Assuming it isn't, you can still use a trick: have overlapping BSD and Vinum partitions, and ensure that at least one plex is concatenated with only a single subdisk. Vinum tells you where the subdisks are, so you can just place a disk label there. For example: 8 partitions: # size offset fstype [fsize bsize bps/cpg] a: 6289807 265 4.2BSD 0 0 0 # (Cyl. 0 - 1050*) c: 6290172 0 unused 0 0 # (Cyl. 0 - 1050*) e: 6290172 0 vinum # (Cyl. 0 - 1050*) Here partition a would coincide with the first subdisk on the e partition. > if you do want to put /usr on a vinum partition, you're back to the > bootstrapping problem -- where to install /usr during the freebsd > install, what to do with that space afterwards. The example above solves that problem as well. Greg -- See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message