2013/7/3 Jason Warr <jason@xxxxxxxx>: > If you want md0 to be a raid1 device in the future you need to create it > as a 2 device array with a missing drive: > > mdadm -C /dev/md0 -l1 -n2 /dev/sda missing > > You can then add in the other device whenever you can/want. The key > though would be to make sure the size in blocks of the first device is = > or smaller than the second device will be. What I would do is create a > fd type partition that is 1% smaller than total raw device size on > /dev/sda just to give your self a small margin of error. > > parted /dev/sda mkpart primary 1.0 99% --align optimal > parted /dev/sda set 1 raid on > mdadm -C /dev/md0 -l1 -n2 /dev/sda1 missing > > That way down the road you can add in a disk of about the same size to > the existing raid1 completely transparent of bcache with a single command. > > mdadm /dev/md1 -a /dev/sdX1 Thanks. But as i understand if the second drive bigger then first i can sync raid1 and after thet grow /dev/md0 to new size... -- Vasiliy Tolstov, e-mail: v.tolstov@xxxxxxxxx jabber: vase@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
