From owner-freebsd-questions Fri Dec 31 9: 0:41 1999 Delivered-To: freebsd-questions@freebsd.org Received: from localhost.cproject.com (premium129.dnvr.uswest.net [206.196.132.129]) by hub.freebsd.org (Postfix) with SMTP id 7BDBC1548D for ; Fri, 31 Dec 1999 09:00:38 -0800 (PST) (envelope-from jhanna@cproject.com) Received: (qmail 60174 invoked by uid 83); 31 Dec 1999 17:01:01 -0000 Received: from unknown (HELO dv2000.omfus.org) (10.1.1.43) by larryboy with SMTP; 31 Dec 1999 17:01:01 -0000 Message-ID: <005901bf53b0$c7bf0f40$2b01010a@omfus.org> From: "John Hanna" To: Subject: Re[2]: DUMP causes system lockup? Date: Fri, 31 Dec 1999 10:02:09 -0700 Organization: Caleb Project MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2314.1300 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > Compile a debug kernel also including the kernel debugger. I'll rebuild the kernel with debugging options and see if I can get more information. > > Is fileaccess in the middle of a dump bad? > > Supposedly dump handles this reasonably well. > > Last night in the middle of this process the system locked up. > > Shouldn't do that. That's what I thought too... Oh, well... John ------------------------- Date: 12/30/1999 Author: Christian Weisgerber John Hanna wrote: > I run dump nightly to backup my files to a second disk, Let me tell you something. In the last couple of years I have twice lost all hard disks in a system at the same time. The first time, the power supply blew and apparently sent a spike down the 12V output. The second time, I ran into a faulty power cable that reversed +5V and +12V. Backups to another disk in the same box aren't. > dump -0 -a -f - / |gzip >/backup/larryboy/larryboy.root.dump.gz > dump -0 -a -f - /usr |gzip >/backup/larryboy/larryboy.usr.dump.gz > > Last night in the middle of this process the system locked up. Shouldn't do that. > Is fileaccess in the middle of a dump bad? Supposedly dump handles this reasonably well. > I can't shut off all server functions for the duration of the > dump. Neither do I. > Is there a way I can make dump more file-sharing-friendly? No. But this is not a dump problem. dump only *reads* from the file system. At most dump could crash. But you are saying the system locked up. Compile a debug kernel also including the kernel debugger. See if you can panic the machine next time this happens. Try to narrow down, where the kernel locks up. -- Christian "naddy" Weisgerber naddy@mips.rhein-neckar.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message