On Tue, Oct 19, 2010 at 6:13 AM, Roy Sigurd Karlsbakk <r...@karlsbakk.net> wrote: > Now, is there a way, manually or automatically, to somehow balance the data > across these LVOLs? My first guess is that doing this _automatically_ will > require block pointer rewrite, but then, is there way to hack this thing by > hand?
You could send | receive some datasets to the same system, then destroy the original and rename the new copy back to the original location. Or send a dataset to a different system, destroy the original, and then send it back again. Most of the new copy should end up on the new vdev, which will help balance things some. Of course, since the new copy is still mostly on one vdev and may not have better performance. Future writes will be able to spread across all the vdevs. You could continue to do this until you feel that datasets have been balanced out. Imagine mixing two fluids by pouring them back and forth between two glasses - After a few times it'll be a homogenous solution. This makes me wonder if a 'ghetto bp_rewrite' would be possible by simply preventing future writes to one vdev and duplicating (even via send | receive) all the blocks that are stored on that vdev. -B -- Brandon High : bh...@freaks.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
