Re: READ_DMA timed out on Promise FastTrak100

2005-01-28 Thread Matthias F. Brandstetter
-- quoting [EMAIL PROTECTED] --
 However, when I boot FreeBSD, the system reports READ_DMA errors on the
 second drive, and the array reports a degraded state. I can still mount
 it, and both drive lights flash when accessing the volume.

I had similar problems with my SATA RAID controller, lots of DMA errors. 
Looks like a bug in 5.3 -- or is it fixed now?

I solved this issue in disabling DMA via sysctl...
HTH! Greetings, Matthias

-- 
Marge, tell Bart I just want to drink a nice glass of syrup like I do
every morning.

  -- Homer Simpson
 Lisa the Vegetarian
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RE: READ_DMA timed out on Promise FastTrak100

2005-01-28 Thread Norbert Koch


 -Ursprüngliche Nachricht-
 Von: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] Auftrag von Matthias F.
 Brandstetter
 Gesendet am: Freitag, 28. Januar 2005 13:58
 An: freebsd-questions@freebsd.org
 Betreff: Re: READ_DMA timed out on Promise FastTrak100

 -- quoting [EMAIL PROTECTED] --
  However, when I boot FreeBSD, the system reports READ_DMA errors on the
  second drive, and the array reports a degraded state. I can still mount
  it, and both drive lights flash when accessing the volume.

 I had similar problems with my SATA RAID controller, lots of DMA errors.
 Looks like a bug in 5.3 -- or is it fixed now?

 I solved this issue in disabling DMA via sysctl...

I am using a Promise FastTrak100
and I have no problems at all.
I tried FreeBSD5.3 Release and the
most current RELENG_5.
So, no kernel bug, as far as I can tell.

Norbert Koch

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Re: READ_DMA timed out on Promise FastTrak100

2005-01-25 Thread Derek
[EMAIL PROTECTED] wrote:
However, when I boot FreeBSD, the system reports READ_DMA errors on the 
second drive, and the array reports a degraded state. I can still mount 
it, and both drive lights flash when accessing the volume.
Googling returns a lot of information relating to hardware:
http://www.google.ca/search?q=%22FAILURE+-+READ_DMA%22+freebsd
I was originally running 5.3-RELEASE-p5 (SMP, dual P3). I built and 
booted 5.3-STABLE SMP, and although everything else looks fine, the 
READ_DMA error is unchanged. I have verified the seating of cables and 
cards.

Does anyone have any pointers? What else should I try?
Thanks in advance.
My suggestions would begin with replacing your cables (obviously with
UDMA100-style/80-conductor)...  I know the promise cables have that
nifty PROMISE branded ribbon that looks like one is supposed to use to
remove the cable from the drive, but I've seen that thing cause some
trouble (like ruining the drive connectors).
Failing that, if you can take the drive out of the machine (new cable,
new card, new system), and run the manufacture's _extensive_ drive tests
on it, I think you'll find all is not well.
Cheers,
Derek
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