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Re: problem with SATA disk, difference between standard kernel and Debian kernel



On Wednesday 2008 December 10 15:15:56 lee wrote:
>what's the difference between a standard kernel and a kernel that
>comes as a Debian package?

The Debian kernel has some non-free (as in: source not available) parts 
removed.  There are also Debian-specific patches added.

>So is there a difference between Debian and standard kernels so that I
>might not have this problem if I'd use a Debian kernel? 

Not that I know of.

>Has this 
>problem been solved in some way yet?

Not that I know of.

You (or someone else that can reliably reproduce the problem -- perhaps some 
paid support personnel) need to work with the kernel developers to identify 
why the kernel is "losing" the drive and if it is due to a bug in the kernel 
or some hardware issue that can be worked around in the kernel.

Yeah, it's a problem, but it's virtually impossible to diagnose that kind of 
error without instrumenting (jargon: attaching real-/run-time sensors to) the 
kernel and reproducing the problem, many times.

Causing the kernel to "dump" (similar to a process coredumping, but the whole 
kernel) when some symptom (super_written get error = -5, maybe?) manifests 
might give you an image that a kernel hacker could perform a post-mortem on.  
Enough dumps might show a pattern.

If you can find a kernel that does work, you might be able to do a "git 
bisect" and identify the patch(es) that broke you -- but that would certainly 
be a project.  How much resources do you want to spend on fixing the problem?  
(If you kick in enough, I'll bet the kernel hackers will kick in some, too.)
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