Degraded RAID-Z1 pool and unused disk after expansion - continued

[koifish59]

@mkropfbe

after expanding my zraid1, I was planning to run the zfs-inplace-rebalancing script on github, but this will take forever and I’m not really sure if it is really necessary…

I had this same question yesterday and concluded that rebalancing is not a big enough issue to worry about. Refer here:

Evenly distributing data on disks

I currently have a pool of 10x 6TB raid-z2 that’s half full. I have another pool of 2 vdev mirrored using 4x 18TB, fully empty. I want to snapshot the first pool and migrate that snapshot to the 2nd pool, then decommission the first pool. If I added more vdevs with 2x 18TB mirrored drives each time down the road to expand, would data evenly redistribute to the new disks or are they still fully contained in the 4 first disks? Would snapshots be the best way to migrate data? Would adding additi…