From owner-freebsd-questions@FreeBSD.ORG Fri Feb 6 10:28:33 2004 Return-Path: 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 1E71C16A4CF for ; Fri, 6 Feb 2004 10:28:33 -0800 (PST) Received: from iota.root-servers.ch (iota.root-servers.ch [193.41.193.195]) by mx1.FreeBSD.org (Postfix) with SMTP id BE80A43D3F for ; Fri, 6 Feb 2004 10:28:28 -0800 (PST) (envelope-from gaml@buz.ch) Received: (qmail 7707 invoked from network); 6 Feb 2004 18:28:24 -0000 Received: from 217-162-134-28.dclient.hispeed.ch (HELO ga) (217.162.134.28) by 0 with SMTP; 6 Feb 2004 18:28:24 -0000 Date: Fri, 6 Feb 2004 19:30:29 +0100 From: Gabriel Ambuehl X-Priority: 3 (Normal) Message-ID: <1203558116.20040206193029@buz.ch> To: freebsd-questions@freebsd.org, freebsd-hardware@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: atacontrol weirdness: RAID 1 array is shown to be degraded but both disks are up X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: Gabriel Ambuehl List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 Feb 2004 18:28:33 -0000 The 4.9 box has got onboard Promise RAID which so far has worked just fine. However, today I got a report about a degraded disk array so I went to check and found something rather odd: $ atacontrol list ATA channel 0: Master: no device present Slave: no device present ATA channel 1: Master: no device present Slave: no device present ATA channel 2: Master: no device present Slave: no device present ATA channel 3: Master: ad6 ATA/ATAPI rev 5 Slave: ad7 ATA/ATAPI rev 5 $ atacontrol status 0 ar0: ATA RAID1 subdisks: ad6 ad7 status: DEGRADED How can a RAID array be degraded when both disks are still there? How do I figure out what disk holds the current set of data? And what do I need to do, anyway?