From owner-freebsd-current Fri May 29 11:20:16 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA01060 for freebsd-current-outgoing; Fri, 29 May 1998 11:20:16 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from sendero.simon-shapiro.org (sendero.simon-shapiro.org.142.69.207.in-addr.arpa [207.69.142.25] (may be forged)) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id LAA00849 for ; Fri, 29 May 1998 11:19:56 -0700 (PDT) (envelope-from shimon@sendero.simon-shapiro.org) Received: (qmail 492 invoked by uid 1000); 29 May 1998 19:21:17 -0000 Message-ID: X-Mailer: XFMail 1.3 [p0] on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: Date: Fri, 29 May 1998 15:21:17 -0400 (EDT) Reply-To: shimon@simon-shapiro.org Organization: The Simon Shapiro Foundation From: Simon Shapiro To: Michael Hancock Subject: Re: DPT driver fails and panics with Degraded Array Cc: "freebsd-current@freebsd.org" , tcobb , Karl Pielorz Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 29-May-98 Michael Hancock wrote: > On Fri, 29 May 1998, Karl Pielorz wrote: > >> One comment (and it's not a flame!) - honestly... ;-) >> >> With an array of that size, on a machine that important - did you not >> test >> to see what would happen with a failed drive? >> > > I recently got a DPT too for a production system but my needs were not as > critical. I use a SYM53C875 for the system disk and the DPT with 2 > mirrored drives for data. I can do some experimentation during off hours > with this system. > > I would like to see the DPT stabilize such that large arrays could be > used > reliably so I'll try and test patches against 2.2.6, after I work out a > budget to get more drives. I am routinely running a Dual DPT with 38 drives on 6 busses. On 3.0-CURRENT SMP. The system did lose disk drives, either intentionally, or by accident. I cannot confirm any of Mr. Cobb's finding. I have not been funished with any data, including the panic point, which I suspect is not in the DPT code. I am still waiting for such data. Simon --- Sincerely Yours, Simon Shapiro Shimon@Simon-Shapiro.ORG 770.265.7340 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message