[ZODB-Dev] Re: return of corruption errors
Gerry Kirk
gerry at faithonline.com
Wed Oct 20 12:49:18 EDT 2004
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
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