From owner-freebsd-scsi Thu Feb 19 11:35:05 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA09525 for freebsd-scsi-outgoing; Thu, 19 Feb 1998 11:35:05 -0800 (PST) (envelope-from owner-freebsd-scsi@FreeBSD.ORG) Received: from uni4nn.gn.iaf.nl (osmium.gn.iaf.nl [193.67.144.12]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id LAA09503 for ; Thu, 19 Feb 1998 11:34:59 -0800 (PST) (envelope-from wilko@yedi.iaf.nl) Received: by uni4nn.gn.iaf.nl with UUCP id AA24460 (5.67b/IDA-1.5 for freebsd-scsi@FreeBSD.ORG); Thu, 19 Feb 1998 19:35:34 +0100 Received: (from wilko@localhost) by yedi.iaf.nl (8.8.7/8.6.12) id SAA01007; Thu, 19 Feb 1998 18:54:55 +0100 (MET) From: Wilko Bulte Message-Id: <199802191754.SAA01007@yedi.iaf.nl> Subject: Re: getting oriented with RAID In-Reply-To: <9802191545.AA02302@mail.kcwc.com> from Curt Welch at "Feb 19, 98 10:45:41 am" To: curt@kcwc.com (Curt Welch) Date: Thu, 19 Feb 1998 18:54:55 +0100 (MET) Cc: freebsd-scsi@FreeBSD.ORG X-Organisation: Private FreeBSD site - Arnhem, The Netherlands X-Pgp-Info: PGP public key at 'finger wilko@freefall.freebsd.org' X-Mailer: ELM [version 2.4ME+ PL32 (25)] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org As Curt Welch wrote... > > On 19-Feb-98 Omar Thameen wrote: > > > Thank you for this excellent information. One more question: > > > > > > > After you've created RAID arrays with DPT, is it possible to > > > later "grow the array" by adding a drive if you need more space? > > > I'm guessing it might be possible if you've set up RAID-5, but not > > > with 0 or 1. > > > > > Yes. I do not remember the details. Shrinking an array is a > different > > story :-) > > But if you build a Unix File system on that array, there's no > way that I know of to grow the file system even if you can grow > the underlying array. I think (I'm not a FS expert) that you could potentially come up with a special hack to newfs to add cylindergroups to an existing FS. And update things like the superblocks etc of course. Real freaks(TM) would want to do that with the FS mounted ;-) Wilko _ ______________________________________________________________________ | / o / / _ Bulte email: wilko @ yedi.iaf.nl http://www.tcja.nl/~wilko |/|/ / / /( (_) Arnhem, The Netherlands - Do, or do not. There is no 'try' --------------- Support your local daemons: run [Free,Net,Open]BSD Unix -- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message