From owner-freebsd-questions@FreeBSD.ORG Wed Sep 3 05:45:32 2003 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 735FC16A4BF for ; Wed, 3 Sep 2003 05:45:32 -0700 (PDT) Received: from mail.va.com.au (shiraz.va.com.au [203.15.106.9]) by mx1.FreeBSD.org (Postfix) with SMTP id 7131F4400E for ; Wed, 3 Sep 2003 05:45:14 -0700 (PDT) (envelope-from jesse@va.com.au) Received: (qmail 14900 invoked by uid 85); 3 Sep 2003 12:45:09 -0000 Received: from jesse@va.com.au by shiraz.va.com.au by uid 82 with qmail-scanner-1.16 (clamscan: 0.52. spamassassin: 2.20. Clear:. Processed in 0.254609 secs); 03 Sep 2003 12:45:09 -0000 Received: from unknown (HELO ?10.0.1.30?) (150.101.125.197) by mail.va.com.au with SMTP; 3 Sep 2003 12:45:09 -0000 Mime-Version: 1.0 X-Sender: jesse%va.com.au@mail.va.com.au Message-Id: Date: Wed, 3 Sep 2003 22:45:05 +1000 To: questions@freebsd.org From: jesse reynolds Content-Type: text/plain; charset="us-ascii" ; format="flowed" Subject: RAID1 is DEGRADED, but which disk is faulty? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Sep 2003 12:45:32 -0000 Hi How do you tell which disk has problems in a hardware RAID1 array? My machine has been up for nearly six months, and only the last three weeks of messages logs are retained. There is nothing any in the last three weeks of system logs about any kind of hardware error, or warning, or anything mentioning ar0, ad4, or ad6. atacontrol is showing a DEGRADED status of the mirror: # atacontrol status ar0 ar0: ATA RAID1 subdisks: ad4 ad6 status: DEGRADED How does one tell which disk is faulty? Or is it possible that they've become out of sync and need rebuilding, in which case which one do I detach and reattach? I'm scared to reboot as it's a running server. What can I do???? Cheers Jesse PS: FreeBSD 4.6.2-RELEASE atapci1: port 0xdc00-0xdc3f,0xe000-0xe003,0xe400-0xe407,0xe800-0xe803,0xec00-0xec07 mem 0xdffe0000-0xdfffffff irq 11 at device 16.0 on pci0 ar0: 76293MB [9726/255/63] status: READY subdisks: 0 READY ad4: 76319MB [155061/16/63] at ata2-master UDMA100 1 READY ad6: 76319MB [155061/16/63] at ata3-master UDMA100 # atacontrol list ATA channel 0: Master: no device present Slave: no device present ATA channel 1: Master: acd0 ATA/ATAPI rev 0 Slave: no device present ATA channel 2: Master: ad4 ATA/ATAPI rev 5 Slave: no device present ATA channel 3: Master: ad6 ATA/ATAPI rev 5 Slave: no device present