No email <null@xxxxxxxxxxx> wrote: > > Forgive me as this is probably a silly question and one that has been > answered many times, I have tried to search for the answers but have > ended up more confused than when I started. So thought maybe I could > ask the community to put me out of my misery > > Is there a version of MD that can create larger than 2TB raid sets? Hmm ... with 1KB blocks, and at 32 bits, 2^32 * 1KB = 4TB would be the notional limit of any block device counted in blocks and using a 32bit counter. But in the 2.6 kernel the counter is 64bit. > Obviously with 400GB drives being commonplace a typical 12 bay solution > is capable of significant capacity, 3.6TB under raid0 or linear? > but if we need to split this down > into multiple raid sets, then we start to lose. I don't see that you have to on general principle even on a 2.4 kernel, but maybe there are extra limits in the case of md devices over block devices that I do not know about. > So, if anyone can advise me as to MD / Linux size limitations I would be > grateful :) Well, I don't have anything to add to the observation above and I'm too lazy to look! But where do you get the "2TB" number from? I can believe that as a number for 1KB block devices in general in early 2.4 kernel times, before signage had been dealt with. Peter - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
