Date: 29 Dec 1999 21:21:33 +0100 From: naddy@mips.rhein-neckar.de (Christian Weisgerber) To: freebsd-questions@freebsd.org Subject: Re: DUMP causes system lockup? Message-ID: <84dqgd$1471$1@bigeye.rhein-neckar.de> References: <002101bf5218$edad17e0$2b01010a@omfus.org>
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John Hanna <jhanna@cproject.com> 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
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