From owner-freebsd-questions@FreeBSD.ORG Thu May 24 15:52:34 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 C5F5E16A469 for ; Thu, 24 May 2007 15:52:34 +0000 (UTC) (envelope-from lists@jnielsen.net) Received: from ns1.jnielsen.net (ns1.jnielsen.net [69.55.238.237]) by mx1.freebsd.org (Postfix) with ESMTP id A7AE813C44C for ; Thu, 24 May 2007 15:52:34 +0000 (UTC) (envelope-from lists@jnielsen.net) Received: from localhost (jn@ns1 [69.55.238.237]) (authenticated bits=0) by ns1.jnielsen.net (8.12.9p2/8.12.9) with ESMTP id l4OFqWc5026089; Thu, 24 May 2007 11:52:33 -0400 (EDT) (envelope-from lists@jnielsen.net) From: John Nielsen To: freebsd-questions@freebsd.org, kalin@el.net Date: Thu, 24 May 2007 11:52:16 -0400 User-Agent: KMail/1.9.6 References: <54316.74.2.36.140.1179892303.squirrel@mail.el.net> <61733.74.64.6.149.1180002606.squirrel@mail.el.net> In-Reply-To: <61733.74.64.6.149.1180002606.squirrel@mail.el.net> X-Face: #X5#Y*q>F:]zT!DegL3z5Xo'^MN[$8k\[4^3rN~wm=s=Uw(sW}R?3b^*f1Wu*.<=?utf-8?q?of=5F4NrS=0A=09P*M/9CpxDo!D6?=)IY1w<9B1jB; tBQf[RU-R<,I)e"$q7N7 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200705241152.16864.lists@jnielsen.net> X-Virus-Scanned: ClamAV version 0.88.4, clamav-milter version 0.88.4 on ns1.jnielsen.net X-Virus-Status: Clean Cc: Subject: Re: raid or not raid 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: Thu, 24 May 2007 15:52:34 -0000 On Thursday 24 May 2007 06:30:06 am kalin mintchev wrote: > so nobody on this list knows anything about raid? > wrong list? > > > hi all.. > > > > i have a box in a remote hosting facility that claims that the machine > > has two discs raided in it but df and fstab show only one disc with a > > bunch of slices. > > under devices there is another name - ad6 - but it's not mounted > > anywhere. the one i see both in df and the fstab is ad4 with one big > > slice and different partitions.... > > > > they insist there are 2 raided discs in tha machine. the os is 5.4 and i > > think at that point the raid drivers were still considered > > 'experimental'. > > > > it makes sense to me that if i don't see a second drive in the fstab > > there isn;t any mounting which means that there is no raid going on... > > > > is there any other way i can make sure if raid is actually on? > > would there will be any logs somewhere? > > the machine has been up for about 2 years and the dmesg is long gone... My guess would be that it's not actually doing RAID. "Real" hardware RAID controllers either require their own drivers (twe, for instance shows disks as twed0, etc) or present disks as SCSI devices (e.g. da0). ATA pseudo-raid hardware supported by FreeBSD's ata(4) driver shows both the raw disks (ad4, ad6, etc) AND an "array" device like ar0. If RAID was set up in the BIOS then FreeBSD is probably ignoring it, perhaps because ata(4) doesn't grok the metadata format used by the RAID card. If I were you I would aim to migrate to gmirror RSN. JN