Comment 8 for bug 1837726

This was a false conclusion, as I was executing /sbin/init instead of /init. The copying works with 100M.

What seems to cause the failure here is udevadm trigger at /lib/debian-installer/start-udev failing because writing add to /sys/devices/vio/uevent will fail with ENODEV.

This is because there is a fake parent device for vio, just to make it look "pretty", dating back to the conversion of vio to 2.6 driver model back in 2004. Removing such a bogus device should fix things. I just don't know yet why this has started to be a problem when it wasn't on previous releases.

Cascardo.