Hi Wols, Based on my own experience, you can do it without trashing the array. However, I should note, that I have never done it this way to an array that I was booting from. But, as long as you've set up GPT to account for the 2MB boundary. If you use "parted" or the graphical equivalent, "gparted", you can account for that in newer drives above the 2TerraByte capacity anyway with 1MB instead of 2MB. So if you add a little extra padding, say 3MB (2MB for your grub, 1MB for a blank section that all drives above 2TB require), you should be in good shape. Perhaps someone else can chime in also, to confirm. On Sun, Sep 25, 2016 at 5:16 PM, Wols Lists <antlists@xxxxxxxxxxxxxxx> wrote: > This is a great way for learning lots about raid :-) > > I'm planning a section on setting up a new system, and I need to know > what will happen if you give entire drives to mdadm. > > Does it leave the first 2 megs empty? Basically, what I'm asking is if I do > > mdadm --create /dev/md/bigarray -add /dev/sda /dev/sdb /dev/sdc > > (note I am passing the entire drive, not the first partition) and then I > install grub on those drives, will I trash the array? > > Cheers, > Wol > -- > 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 -- 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
