On Tue, 27 Apr 2010, David Dyer-Bennet wrote:
Hey, you know what might be helpful? Being able to add redundancy to a raid vdev. Being able to go from RAIDZ2 to RAIDZ3 by adding another drive of suitable size. Also being able to go the other way. This lets you do the trick of temporarily adding redundancy to a vdev while swapping out devices one at a time to eventually upgrade the size (since you're deliberately creating a fault situation, increasing redundancy before you do it makes loads of sense!).
You can already replace one drive with another (zpool replace) so as long as there is space for the new drive, it is not necessary to degrade the array and lose redundancy while replacing a device. As long as you can physically add a drive to the system (even temporarily) it is not necessary to deliberately create a fault situation.
Bob -- Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
