@softraid-support Kind of both. I have 4 4TB drives. I'm pretty sure this report is when I had everything running on SR. Thanks.
I have to paste your partition maps onto some disks and test this. It appears OK to me, but it is hard to tell at times.
I will try to do it tonight, else tomorrow, as it takes an hour or two.
I checked your drives. I can resize the volume to 8TB, or to 4TB, no problem. This is of course with a "clean" volume.
Try disable Spotlight on your volume, manually unmount it and see if you can resize it.
Let me know what the error is, if any. Restart before you try.
@softraid-support Thanks for your efforts. I've managed to get Raid10 working with the ZFS drives. And it doesn't have the latency issue with APFS (I formatted both ZVOLs as APFS with a write cache). I suspect, to get SR working again, I'd need to do a completely clean install. I'll see how stable ZFS is before going back to SR.
Yes you would have to erase all the disks with Disk Utility. If I remember, you cannot initialize zfs disks using SoftRAID.

