2017-04-24 4:09 GMT+02:00, Brad Campbell <lists2009@xxxxxxxxxxxxxxx>: > On 24/04/17 03:21, Patrik Dahlström wrote: > >> I just thought of something: since /dev/sdf is a completely new disk, >> shouldn't I be able to locate the starting point by looking at how much >> of the new disk is filled. It comes filled with zeros from factory, >> right? > > Pretty close. You should also be able to see how the reshape worked > (front to back, back to front) and you should get a pretty good idea of > the data-offset by the gap between the superblock and the data. I've let a program compare both raid sets (5 and 6 disk) overnight. So far it has gone from 128 MB to 14 TB without finding common data. Does that tell us anything? Should I pause the comparison and look at the end of sdf to find the last written offset? I currently only have 1 shell in Ubuntu maintenance/rescue mode > > I must say I'm having trouble imagining a more difficult recovery > scenario, so at least you present an interesting challenge. I always like a challenge, but this one I believe I could've skipped :) > > There's a lot to be said for the old "Don't panic" mantra, but hindsight > is always 20/20. All too true Best regards // Patrik -- 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
