[DRBD-user] Warning: Data Corruption Issue Discovered in DRBD 8.4 and 9.0

Eric Robinson eric.robinson at psmnv.com
Thu Oct 19 23:31:01 CEST 2017

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

> > However, there are no zeroes anywhere else in the file except at the
> > end of every sequence.
> >
> > I guess it is safe to conclude that your theory is right. The file
> > does not appear to really be corrupted. The TrimTester tool is
> > reporting a false positive.
> >
> > --Eric
> >
> I think you mentioned that you had at least one C++ consultant look at the
> source code of the TrimTester tool, and that it had even been reviewed by
> Samsung engineers before, and that is the part that I find most worrying.
> Someone of those people should have seen immediately that the code looks
> evidently suspicious in more than just a few places, and should either have
> investigated or at least should have pointed out that the code may be
> flawed.

I agree completely. It may have boiled down to motivation. Those first two guys were working essentially gratis and I think they just gave it a cursory once-over. The third guy was a /paid/ consultant. He saw the problem immediately, fixed it, and committed the changes to github. You get what you pay for. 😉


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