On Feb 11, 2014, at 1:12 AM, Hans J. Albertsson <[email protected]> wrote:
> Suppose I set up a raidz1 of N disks now, and fill it up, and suddenly I > realize I'm going to need more space, but not enough to warrant setting up a > new raidz1 of another N or more disks, it's just a minor need, so I need N+1 > disks, rather than just N. for raidz, your pool will consist of N vdevs. each vdev consists O number of disks. the pool can only be expanded by the number of disks (N) in a vdev. all vdevs have the same number of disks. all expansion is done by adding vdevs. in mirrors, i highly recommend mirrors, a vdev is a single disk. > > Can this be done w/o losing the data on the original zpool? > > And on a similar note: Suppose I have a signgle disk with data, and I decide > I can just afford a raidz1 of 4 disks, so I buy 3 more.... can I somehow > migrate the data on the original single disk onto a 3 disk raidz1 and then > add the original disk to that raidz? Yes, you could migrate the original data to the 3 disk zpool if the configured size of the 3 disk pool is greater than the utilized size of the single disk. You could add to the new pool as a hot spare. Alternately, the pool has to be expanded in terms of vdevs which in this case is 3 drives. in this scenario, using mirrors makes the most sense. j. _______________________________________________ OpenIndiana-discuss mailing list [email protected] http://openindiana.org/mailman/listinfo/openindiana-discuss
