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Date:      Tue, 21 Mar 2000 03:07:39 -0500
From:      Jim Mercer <jim@reptiles.org>
To:        Nadav Eiron <nadav@cs.Technion.AC.IL>
Cc:        hackers@freebsd.org
Subject:   Re: spontaneous reboots FreeBSD 3.x and 4.0-stable
Message-ID:  <20000321030738.T15100@reptiles.org>
In-Reply-To: <Pine.GSO.3.95-heb-2.07.1000321094543.21518A-100000@csd>; from nadav@cs.Technion.AC.IL on Tue, Mar 21, 2000 at 09:52:17AM %2B0200
References:  <20000321024104.S15100@reptiles.org> <Pine.GSO.3.95-heb-2.07.1000321094543.21518A-100000@csd>

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On Tue, Mar 21, 2000 at 09:52:17AM +0200, Nadav Eiron wrote:
> I have (had?) some similar reboots, but I'm not sure it's the same. Still,
> it's another data point: I have a 133MHz Pentium with two IDE disks,
> running Postgresql over vinum. The machine is underpowered (only 32MB RAM,
> so it swaps heavily when more than 2-3 clients are concurrently active),
> and under heavy loads it rebooted several times.

both my machines have more than adequate RAM (384 Meg and 512 Meg).

one runs vinum, the other doesn't.  (in fact the one running vinum reboots
less frequently than the one without vinum).

> Naturaly, it all stoppoed
> once I added dumping to the config to debug it ;-)

i considered adding this, but even with the reboots, i need the systems in
production, and i suspect that adding the debug stuff would cause the system
to wait for manual intervention.

> It also used to give
> bad file descriptor errors for files both on the vinum volumes and on
> other volumes in the nightly cron runs. What's even weirder is that some
> of these bad file descriptor errors disappeared (files were back to normal
> when I came to check in the morning). I thought this was all related to
> one of the disks being flaky (it has a large area with bad sectors that I
> just partitioned around), but your description kinda rings a bell.

i haven't seen the bad file descriptor problem.

> Anyway,
> I haven't seen any of these reboots for about 3 weeks now, but would sure
> like to get to the bottom of this, if I can.

so, adding debug to the kernel "fixed" it?

-- 
[ Jim Mercer                 jim@reptiles.org              +1 416 506-0654 ]
[          Reptilian Research -- Longer Life through Colder Blood          ]
[  Don't be fooled by cheap Finnish imitations; BSD is the One True Code.  ]


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