On 05/07/17 17:42, Roman Mamedov wrote: > On Wed, 5 Jul 2017 17:34:09 +0200 > Veljko <veljko3@xxxxxxxxx> wrote: > >> Hello, >> >> I have a RAID10 device which I have formated using the mkfs.xfs >> defaults (Stan helped me with this few years back). I reached 88% >> capacity and it is time to expand it. I bought 4 more drives to create >> another RIAD10 array. I would like to create linear device out of >> those two and grow XFS across the 2nd device. How can this be done >> without loosing the existing device's data? I would also like to add a >> spare HDD. Do I have to have a separate spare HDD for each array or >> one can be used by both of them? > > Why make another RAID10? With modern versions of mdadm and kernel you should > be able to simply reshape the current RAID10 to increase the number of > devices used from 4 to 8. > > I was thinking of replying, but isn't that not possible for some versions of RAID-10? My feeling was, if you can't just add drives to the existing raid 10, create a new one which you can expand, migrate the fs across (btrfs would let you do that live, I believe, so xfs probably can too), then you can scrap the old raid-10 and add the drives into the new one. 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
