"Peter T. Breuer" wrote: > > "A month of sundays ago Paul Clements wrote:" > > * allowing the bitmap to be rescaled -- i.e., changing the amount of > > data that each bit represents > > I really don't agree with that :-). But maybe it can be done! It's > just I personally see no way anyone can count in anything except 1K > blocks with the current raid code the way it is. > > Originally I wrote the patch with more generality, but realized that the > generality could never be made use of - there are too many assumptions > in the extant raid code that one block = 1KB. The translation from 1K blocks to whatever-sized bitmap blocks (or "chunks") will be done only when marking or unmarking the bitmap (and incrementing/decrementing the block counters). The block counters allow us to know when multiple 1K block writes are actually on the same "chunk" so that everything is handled correctly. -- Paul - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
