Xiao Ni <xni@xxxxxxxxxx> > > It depends on which layout do you use and the copies you specify. There > > is a detailed description in `man md 3` > > Thanks a lot for the hint. After studying the pattern I think n2 and > o2 could survive if losing two correct disks with 4 or 5 disks. but f2 > will be dead. is my understanding correct? it seems not correct. I check the pattern again. I found all layout(n2,o2,f2) tend to put second copy to neighbor disk. so if I link all disks as a circle ring, I will be safe if there are no two disks nearby are dead. in other words: if a disk is dead, but the two neighbor disks around it are alive, then I will be safe. hope this time the logic is correct.... .
