Date: Wed, 8 Mar 2017 11:59:09 -0600 From: Bob Willcox <bob@immure.com> To: "Rodney W. Grimes" <freebsd-rwg@pdx.rh.CN85.dnsmgr.net> Cc: Jan Knepper <jan@digitaldaemon.com>, hackers list <freebsd-hackers@freebsd.org> Subject: Re: Help with silent reboot of 10.3-stable system Message-ID: <20170308175909.GH22199@rancor.immure.com> In-Reply-To: <201703081727.v28HRvp6001740@pdx.rh.CN85.dnsmgr.net> References: <86b89c6c-9a00-1033-4181-a7e0da2ed66f@digitaldaemon.com> <201703081727.v28HRvp6001740@pdx.rh.CN85.dnsmgr.net>
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On Wed, Mar 08, 2017 at 09:27:57AM -0800, Rodney W. Grimes wrote: > > Is your system swapping to disk? Heavily? > > > > Might want to check the swap space on disk. > > > > I had spontaneous reboots some years ago because of bad swap space on > > disk. (Got a new disk, 'dd'-ed the old disk to the new disk, reboot on > > the new disk and everything was fine) > > > > Jan > > Good possibilty too, though usually this one causes console message > to be spewed out and evetually a swap pager panic. Though no evidence > is left behind beccase the disk couldnt be used to indicate an issue. > > Your probably not around the console when this happens Bob? > It may be possible to hook up a serial console and capture > the panic if it is happening. > > There are other failue modes that leave no on disk trace as well, > but well spit out a panic to a serial console. It has typically happened when the load is light. Since this system is mostly just an NFS file and DLNA server it is usually lightly loaded. And yes, so far I haven't been near the console (it's in a room I'm usually not in). The MB doesn't have a serial port on it. I could try a USB to rs232 adapter, but haven't attempted to use one of those with FreeBSD before. > > > On 03/07/2017 20:56, Bob Willcox wrote: > > > Over the past month or so my network fileserver system (NFS support for my > > > entire, small, network) has begun silently rebooting itself. Here is the uname > > > -a output: > > > > > > FreeBSD vader.immure.com 10.3-STABLE FreeBSD 10.3-STABLE #15 r313997: Mon Feb 20 14:40:00 CST 2017 bob@vader.immure.com:/usr/obj/usr/src/sys/GENERIC amd64 > > > > > > At first I suspected that it might be the power supply as it was a couple of > > > years old so I replaced that. Unfortunately, it has begun doing it again (had > > > a couple of weeks respite) so now my suspicions seem to have been incorrect. > > > > > > I was hoping that someone might be able to give me some clues on what I can do > > > to reveal the problem. Are there any general debug settings for the kernel (or > > > elsewhere) that would maybe give an indication of why it is being rebooted > > > (assuming it's a software problem)? > > > > > > Thanks for any suggestions you may have! > > > > > > Bob > > > > > > > _______________________________________________ > > freebsd-hackers@freebsd.org mailing list > > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" > > > > -- > Rod Grimes rgrimes@freebsd.org -- Bob Willcox | If a program is useful, it will be changed. bob@immure.com | Austin, TX |
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