Help with silent reboot of 10.3-stable system

[Andrii Stesin]

I bet for faulty RAM module

On Mar 8, 2017 19:47, "Rodney W. Grimes" <freebsd-rwg at pdx.rh.cn85.dnsmgr.net>
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.
>
> > 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 at 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
> > >
> >
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>
> --
> Rod Grimes
> rgrimes at freebsd.org
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