On Wednesday 23 March 2011 09:14:24 Roman Mamedov wrote: > > > I'm currently in the process of converting a 3 disk RAID5 array into a > > > 4 disk RAID5 array. I'm using mdadm 3.1.4 and Linux kernel > > > 2.6.35-28-generic (Ubuntu). My questions now is this conversion save > > > in a live (running) system? Or is this now allowed/supported? > > > > I guess you wanted to say "4 disk RAID6 array"? > > > > In that case, yes, I have done it on 2.6.32 and mdadm version (something > > older) and it went just fine. > > > > Neil wrote about it here <http://neil.brown.name/blog/20090817000931>. > > Additionally, I suggest that you also check "man mdadm" and note the > "--layout=preserve" option, if you use it, the RAID5 to RAID6 conversion > while adding one disk will happen instantly, without restriping (but only > with a resync of the new drive). Thanks. I already started with this conversion, so this "--layout=preserve" is not an option for me any more. But good to know that this conversion should work. But its slow - it'll take approx. 4 days with my 2TB drives. Best regards, 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
