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Date:	Thu, 04 Jan 2007 14:02:22 +0900
From:	Tejun Heo <>
To:	Pablo Sebastian Greco <>
Subject: Re: SATA problems

Pablo Sebastian Greco wrote:
> By crash I mean the whole system going down, having to reset the entire
> machine.
> I'm sending you 4 files:
> dmesg: current boot dmesg, just a boot, because no errors appeared after
> last crash, since the server is out of production right now (errors
> usually appear under heavy load, and this primarily a transparent proxy
> for about 1000 simultaneous users)
> lspci: the way you asked for it
> messages and messages.1: files where you can see old boots and crashes
> (even a soft lockup).
> If there is anything else I can do, let me know. If you need direct
> access to the server, I can arrange that too.

Can you try 2.6.20-rc3 and see if 'CLO not available' message goes away
(please post boot dmesg)?

The crash/lock is because filesystem code does not cope with IO errors
very well.  I can't tell why timeouts are occurring in the first place.
 It seems that only samsung drives are affected (sda2, 3, 4).  Hmmm...
Please apply the attached patch to 2.6.20-rc3 and test it.



View attachment "patch" of type "text/plain" (441 bytes)

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