[ZODB-Dev] Re: return of corruption errors

[Gerry Kirk]

Tim Peters wrote:
> 
> The same file?  If so, then you definitely have a major system problem of
> some kind.  There's nothing non-deterministic about what fstest.py does:
> feed it the same file a trillion times, and it will do exactly the same
> thing a trillion times.  If in one of those trillion times it does something
> different, you have a HW or system SW problem of some sort.  Well, at "a
> trillion" even a stray gamma ray could come into play, but you get the idea
> ...
> 
sorry, should clarify. we do a full backup of data.fs each night, so it 
is the same file with additional transactional data at the end.

> Random idea:  run your system's md5sum on it from time to time, and see
> whether you get the same digest every time.  If you don't, the nature of the
> problem gets much clearer.  If you do get the same digest every time, this
> could branch in many directions.  I'll note that if you typically have to
> wait a day or so before fstest.py fails again, that suggests a disk-related
> problem.
> 
tried running it once an hour - same so far.

I'm in agreement with you, though, that this looks like a hw issue. 
Thanks for your quick responses.

- gerry