From owner-freebsd-questions@FreeBSD.ORG Mon Mar 5 22:50:46 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id DCB7816A403 for ; Mon, 5 Mar 2007 22:50:46 +0000 (UTC) (envelope-from derek@computinginnovations.com) Received: from betty.computinginnovations.com (dsl081-227-250.chi1.dsl.speakeasy.net [64.81.227.250]) by mx1.freebsd.org (Postfix) with ESMTP id 7497C13C4BB for ; Mon, 5 Mar 2007 22:50:46 +0000 (UTC) (envelope-from derek@computinginnovations.com) Received: from p28.computinginnovations.com (dhcp-10-20-30-100.computinginnovations.com [10.20.30.100]) (authenticated bits=0) by betty.computinginnovations.com (8.13.8/8.12.11) with ESMTP id l25MoG29031114; Mon, 5 Mar 2007 16:50:17 -0600 (CST) Message-Id: <6.0.0.22.2.20070305164542.025808f8@mail.computinginnovations.com> X-Sender: derek@mail.computinginnovations.com X-Mailer: QUALCOMM Windows Eudora Version 6.0.0.22 Date: Mon, 05 Mar 2007 16:50:02 -0600 To: "Michel, Dietmar" , From: Derek Ragona In-Reply-To: <0C398216960631429151B4A4B6B1FC03038CCAB0@fra-ex-01.adprod. bmc.com> References: <0C398216960631429151B4A4B6B1FC03038CCAB0@fra-ex-01.adprod.bmc.com> Mime-Version: 1.0 X-ComputingInnovations-MailScanner-Information: Please contact the ISP for more information X-ComputingInnovations-MailScanner: Found to be clean X-ComputingInnovations-MailScanner-From: derek@computinginnovations.com X-Spam-Status: No Content-Type: text/plain; charset="iso-8859-1"; format=flowed Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: Subject: Re: RAID5 degraded - system hangs X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 05 Mar 2007 22:50:46 -0000 I'm no expert, but have experienced a few RAID issues. First, RAID 5 will= =20 become degraded and will try to rebuild upon a drive failure, once the=20 failed drive is replaces. In Mirrored RAID, RAID 1, or RAID 10, the system= =20 will continue to function on the good drive but will alert the=20 administrator of the drive failure. One last thing, SATA RAID drives, while they are often said to be=20 hot-swapable, most manufacturer's recommend power-off then swap=20 drives. With SCSI hot swapable drives they can be swapped with power still= on. -Derek At 09:22 AM 3/5/2007, Michel, Dietmar wrote: >Hi Guys, > > > >I=B4m using an older Server with FreeBSD 6.2 als Fileserver in my home off= ice. > >Now I made an upgrade using 4 SATA II disks connected to a promise TX4310= =20 >Raid controller. > >Defining a RAID5 a bios level, starting the server and building up the=20 >Raid at OS level: > ># atacontrol create RAID5 32 ad4 ad6 ad8 ad10 > ># bsdlable ... > ># newfs ... > > > >And now I have a functional Raid named ar0. > > > >At boot time the bios told me that even at this level the raid in=20 >initializing - world seemed to be ok. > > > >Now I tried to prove Raid function and disconnect one disk. > >Theoretical data is covered by the rest of 3 ... but after I get the=20 >system message that one disk has been disconnected the maschine stopps wor= king. > >Told me: ar0 raid 5 degarded after a fw minutes no input is possibble. > > > > > >Even after reboot > >.... > >ar0: disk0 Ready >ar0: disk1 Ready >ar0: disk2 Ready >ar0: disk3 down no device found > >... end of work > > > >No single user mode or other starting option seemed to work. > >I have no chance to rebuild the raid via atacontrol. > > > >Any hints? > >Raid without reliability doesn=B4t make sense! > > > >Regards > > > > Dietmar > >_______________________________________________ >freebsd-questions@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-questions >To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.or= g" > >-- >This message has been scanned for viruses and >dangerous content by MailScanner, and is >believed to be clean. >MailScanner thanks transtec Computers for their support. --=20 This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks transtec Computers for their support.