Comment 3 for bug 1906542

Why is the second disk missing? If you accidentally added it and ended up with a striped pool, as long as both disks are connected, you can import the pool normally. Then use the new device_removal feature to remove the new disk from the pool.

If you've done something crazy like pulled the disk and wiped it, then yeah, you're going to need to figure out how to import the pool read-only. I don't have any advice on that piece.