Am 28.06.2012 17:56, schrieb Stefan G. Weichinger: > md0 : active raid6 sdb3[4](S) sda3[5] sdc3[2] sdd3[3] > 3903891200 blocks level 6, 64k chunk, algorithm 2 [4/2] [__UU] > [================>....] recovery = 83.0% > (1621636224/1951945600) finish=81.5min speed=67477K/sec > > I assume it is OK in this state of things that sdb3 is marked as > (S)pare ... It seems so, as now it has entered the next stage: md0 : active raid6 sdb3[4] sda3[0] sdc3[2] sdd3[3] 3903891200 blocks level 6, 64k chunk, algorithm 2 [4/3] [U_UU] [=>...................] recovery = 6.2% (122751744/1951945600) finish=784.6min speed=38854K/sec Somewhat slower, but no (S)pare there anymore. What is the logic behind that? What does it do exactly when it re-adds the first disk, what in the second round? Should I have added sd[ab]3 in one command? To me it also seems that I now have good redundancy again already, correct? Sorry for all my questions ;-) I just like to understand things, at least on my user-level. Stefan -- 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