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Date:      Tue, 4 Dec 2001 19:57:50 +0000
From:      Josh Paetzel <friar_josh@webwarrior.net>
To:        Brady Montz <bradym@mail.hydrologue.com>
Cc:        FreeBSD-Stable@mail.hydrologue.com, stable@FreeBSD.ORG
Subject:   Re: 4.4-STABLE crashes - suspects new ata-driver over wd-driver
Message-ID:  <20011204195750.B3320@twincat.vladsempire.net>
In-Reply-To: <200112050033.fB50X6G12476@mail.hydrologue.com>; from bradym@mail.hydrologue.com on Tue, Dec 04, 2001 at 04:33:06PM -0800
References:  <200112050033.fB50X6G12476@mail.hydrologue.com>

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On Tue, Dec 04, 2001 at 04:33:06PM -0800, Brady Montz wrote:
> Morsal Roudbay <morsal@swipnet.se> writes: 
>  
> > On Sat, Dec 01, 2001 at 02:45:18AM -0500, Chris BeHanna wrote: 
> > > On Fri, 30 Nov 2001, Morsal Roudbay wrote: 
> > >  
> > > > Yes.. the PSU is a 300W unit made by AOpen... the server works 
> > > > flawless as long as I dont use the IDE drives too heavily. It 
> > > > only crashes when I do heavy IO on the IDE drives... for 
> > > > isntance ports (/usr/ports is on a IDE drive) as I mentioned 
> > > > earlier. 
> > >  
> > >     Upgrade your power supply.  Under heavy loads, some power supplies 
> > > cannot maintain the correct voltage for the CPU.  300W is marginal for 
> > > many modern systems. 
> > >  
> > >     Antec is a very good brand.  A 400W unit will set you back about 
> > > $100 US, but could save you lots of headaches. 
> >  
> > I have now verified that it isnt my powersupply. It is perfectly healthy so 
> > it must be the ATA driver that crashes the computer. 
>  
> I've been recently noticing the same thing with my machine. I don't 
> have the specs handy since I'm at work, but I am using IDE drives. 
> The trouble started last week, using a 4.4-STABLE kernel built on Nov 3. 
> I reinstalled world yesterday from the latest 4.4-STABLE,
> and it hasn't gotten better. 
>  
> For me, it only happens during heavy disk access, such as when backing 
> up my hard drive to a huge tar file, or when doing build or clean. My 
> machine will either lock up or reboot. I haven't seen any messages in 
> any of my log files. The MTBF under such load (like portupgrade mozilla) seems
> to be about an hour or so.
> 
> Other data poiints: I ran memtest86 overnight, and it didn't find any 
> memory errors, and tripwire hasn't noticed any filesystem corruption.
>  
> --  
>  Brady Montz 
>  bradym@balestra.org 


Bad disks will cause reboots, and leave no messages in log files or to 
console.  I've got a pair of seagate 9gig scsi drives that will reboot 
any system they are in, and not cause a single error, but only if they 
are heavily accessed.  This took me forever and a day to discover, 
swapping one component at a time, and the disks were the last thing I 
thought would be the problem.

Josh


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