Re: Bad disk or kernel (ATA Driver) problem? - SOLVED

From: Karl Denninger (karl_at_denninger.net)
Date: 01/20/05

  • Next message: Bartosz Fabianowski: "Persisting troubles with periodic stalls every few minutes" 
    Date: Wed, 19 Jan 2005 17:15:04 -0600
To: freebsd-stable@freebsd.org

    On Wed, Jan 19, 2005 at 03:06:04PM -0800, Jon Simola wrote:
    > On a different box (Supermicro SuperServer 5013C-T, P4SCE BIOS v1.2c):
    ......
     
    > A pair of Maxtor 80GBs, the BIOS is set for "Enhanced", up to 6 drives
    > (4 IDE + 2 SATA).

    ....

    > Crazy as though it seems, I wasn't kidding about changing the BIOS.
    > The other 2 settings are "SATA only" and "Auto". When the drives
    > started flaking out (timeouts on reads) I would go into the BIOS and
    > cycle through the BIOS settings. After changing it once or twice,
    > things would be fine for months at a time.

    After swapping the "suspect" drive around in an attempt to get the failure
    to move to the other disk in the pair I actually got a failure on the OTHER
    channel (in other words, the problem followed the DISK)

    That got followed up with a soak test with DOS-based diags, which eventually
    spat out a hard failure code. It took some effort, since the problem
    doesn't appear on a quick test nor does it show up at the same block all
    the time - indeed, the block where it finally pukes is all over the place.

    Back to Maxtor it goes - it appears that FreeBSD's driver (and the bios,
    etc) is not at fault here, and was indeed reporting a "real" failure.

    I guess the mirroring code in 5.3-STABLE actually works :-> 

    -- 
Karl Denninger (karl@denninger.net) Internet Consultant & Kids Rights Activist
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  • Next message: Bartosz Fabianowski: "Persisting troubles with periodic stalls every few minutes"

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