Is it possible to force ZFS to "nicely" re-organize data inside a zpool after a new root level vdev has been introduced?
e.g. Take a pool with 1 vdev consisting of a 2 disk mirror. Populate some arbitrary files using about 50% of the capacity. Then add another 2 mirrored disks to the pool. It seems like (judging from zpool iostat) that going forward new data will be striped as expected, but existing data is not striped. This presents a question of what happens with the original mirror set runs out of space? Does the striping stop automagically? How does this impact resilvering and recovering from failures?
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