Robert Haas <robertmh...@gmail.com> wrote: > "It might be safe" is a bit of a waffle. It would be nice if we > could provide some more clear guidance as to whether it is or is > not, or how someone could go about testing their hardware to find > out. I think that the issue is that you could have corruption if some, but not all, disk sectors from a page were written from OS cache to controller cache when a failure occurred. The window would be small for a RAM-to-RAM write, but it wouldn't be entirely *safe* unless there's some OS/driver environment where you could count on all the sectors making it or none of them making it for every single page. Does such an environment exist? -Kevin
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