> Atomic in the original word meaning can't be cut, and stopping is a form of
> cutting. Rolling back is a strategy to permit stopping an atomic operation,
> but I am unsure thi can be done always.
The fact that *some* actions need to be atomic doesn't prevent
interrupting various (other) long-running operations.
In general "atomic" and "long-running" don't go well together, so while
some atomic operation may be long-running it's usually a problem
in itself (e.g. in case of power/software failure).
Stefan
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