FreeBSD Crashes Intermittently !!

[shahzaib shahzaib]

Hi,

Thanks for all your detailed explanation to help me as much as you can -
very much appreciated your assistance :) . Now we've deployed 5 x Dell r510
/ Controller LSi-9211 to run same services on them and i guess that's the
only way to diagnose actual cause of the crash. If Dell do not crash then
conclusion would be Faulty Hardware.

On Thu, Mar 10, 2016 at 12:19 AM, Roland Smith <rsmith at xs4all.nl> wrote:

> On Wed, Mar 09, 2016 at 05:24:37PM +0500, shahzaib shahzaib wrote:
> > Hi,
> >
> > I am new to this mailing list so please pardon me for any mistakes. We've
> > started using FreeBSD from past 4-5 months and facing auto-reboot crash
> > issue since the beginning. Following are the servers specs :
> >
> > Supermicro X5690 (12 cores, 24 threads - 2u)
> > 96GB RAM
> > 12x3TB mirror+stripping (HBA-LSI9211)
> > X8DT3 Board
> >
> > We've total of 5 supermicro servers built upon same hardware and all of
> > them intermittently goes down and sometimes they crash and boot up
> > automatically (within 6min) and sometimes they gets freeze and we've to
> > manually boot them via IPMI interface. All the time we get 'MCA Internal
> > Timer Error' in crash logs. Here is the recent one :
> >
> > http://pastebin.com/042SJ11c
>
> In my experience, random crashes/reboots are almost certainly hardware
> issues.
> Sometimes a card or memory module isn't seated properly (especially after a
> machine has been moved). But other times it's things like memory modules or
> power supplies failing.
>
> Sometimes logging things like voltages, CPU temperatures and fan RPM can
> give
> you a clue.
>
> At $WORK I've experienced spectacular power supply blow-outs because
> (conductive) carbon fibers caused a short circuit in it. So dust et cetera
> can
> also be a problem, but usually not with new systems.
>
> Roland
>
> --
> R.F.Smith                                   http://rsmith.home.xs4all.nl/
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