Could I suggest an addition to the FAQ, since I think this problem is an "issue" that might become more prevalent as such drives become more common? I would suggest something like the following two sentences, perhaps at the end of the paragraph quoted from the FAQ (sorry for not diffing): "A drive that reports something other than 512 bytes/sector in disklabel(8) may not be supported by softraid. Multi-terabyte drives, for example, may report something like 4096 bytes/sector."
14.8 - What are the issues regarding large drives with OpenBSD? [...] FFS vs. FFS2 Using FFS, OpenBSD supports an individual file system of up to 2^31-1, or 2,147,483,647 blocks, and as each block is 512 bytes, that's a tiny amount less than 1T. FFS2 is capable of much larger file systems, though other limits will be reached long before the file system limits will be reached. Thanks, Peter