On 2017-12-06, [email protected] <[email protected]> wrote: > If TRIM would be implemented someday, one thing that would be > neat would be that crypto and other softraid would propagate the > TRIM. That would be a nice combination between wear level resiliency > and disk data safety.
That runs counter to popular thinking that an encrypted filesystem should not reveal how much space has been allocated (and where). For instance, the FAQ https://www.openbsd.org/faq/faq14.html#softraid explicitly recommends to overwrite the whole drive with random data first to prevent this sort of analysis. -- Christian "naddy" Weisgerber [email protected]
