From owner-freebsd-questions Tue Dec 18 17: 6: 0 2001 Delivered-To: freebsd-questions@freebsd.org Received: from luke.cpl.net (luke.cpl.net [63.169.72.3]) by hub.freebsd.org (Postfix) with ESMTP id 9C9D237B419 for ; Tue, 18 Dec 2001 17:05:57 -0800 (PST) Received: from shawn.cpl.net (shawn.megadeth.org [63.169.72.21]) by luke.cpl.net (8.11.3/8.11.3) with ESMTP id fBJ160512422; Tue, 18 Dec 2001 17:06:00 -0800 (PST) Message-Id: <5.1.0.14.0.20011218170635.00a628c8@mail.cpl.net> X-Sender: shawn@mail.cpl.net X-Mailer: QUALCOMM Windows Eudora Version 5.1 Date: Tue, 18 Dec 2001 17:07:51 -0800 To: Dan Nelson From: Shawn Ramsey Subject: Re: Funked up filesystem Cc: questions@FreeBSD.ORG In-Reply-To: <20011218231406.GA31631@dan.emsphone.com> References: <5.1.0.14.0.20011218141238.02a0ee38@mail.cpl.net> <5.1.0.14.0.20011218141238.02a0ee38@mail.cpl.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG At 05:14 PM 12/18/2001 -0600, Dan Nelson wrote: >In the last episode (Dec 18), Shawn Ramsey said: > > We have an external SCSI box of disks, connected to a PCI RAID > > adapter... the cable connecting to the server was accidently > > disconnected, which caused the server to crash. (which probably > > shouldn't have happened either being on a RAID controller) But after > > rebooting, one of the file systems in that box was real screwed up, > > with the root directory consisting of lost+found, with directories > > underneath being named something like > > > > #0142869 #0365086 #0611086 > > > > This is the first time I've ever seen a non bad hardware related file > > system problem... Should doing what I did have caused this? The SCSI > > box is connected to a Mylex ExtremeRaid 1100, if it matters... > > >From the point of view of the server, it was bad hardware. The drives >suddenly disppeared :) The problem was probably compounded by the fact >that the OS itself didn't lose the drives; the raid controller did, so >any cached data on the controller was lost. That's probably why you >ended up with messed up directories. I've done the same thing to an >Adaptec ASR 3200 connected to external SCSI disks. > >Internal RAID cards can handle a single disk failure easy enough, but >when they all disappear at once I don't think they can recover. > >Moral: Screw your scsi cables down tight. Uh huh. :) The only reason it wasn't, was one of the SCA docks in it went bad a week earlier, and the cable wasn't screwed back in after it was replaced... To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message