Mingming Cao [off-list ref] wrote:

I run 50 fsx tests on ext3 filesystem on 2.5.70-mm6 kernel. Serveral fsx 
 tests hang with the status D, after the tests run for a while.  No oops, 
 no error messages.  I found same problem on mm5, but 2.5.70 is fine.

 Here is the stack info:

Thanks for this.

Everything is waiting on I/O.  It looks like either the device driver
failed or the IO scheduler got its state all screwed up.

Which device driver are you using there?

If you could, please retest with "elevator=deadline"?


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