port-amd64/51279: bootxx_ffsv2 hangs

[bsiegert%NetBSD.org@localhost]

>Number:         51279
>Category:       port-amd64
>Synopsis:       bootxx_ffsv2 hangs
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    port-amd64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 26 19:25:00 +0000 2016
>Originator:     Benny Siegert
>Release:        NetBSD 7.99.32/amd64, snapshot from 2016-06-26
>Organization:
The NetBSD Foundation
>Environment:
>Description:
I just installed NetBSD-current from a snapshot dated 2016-06-26.

The system is a "Skull Canyon" Intel NUC with Skylake chipset. The disk I installed on is an NVMe SSD. It shows up as nvme0 and ld0.

After installation, here is the full content of my screen when the system hangs:

Fn: diskn
1: Windows
2: NetBSD

[here is where I pressed 2]

NetBSD/x86 ffsv2 Primary Bootstrap

Then it hangs.

I can successfully boot from a USB stick (which uses bootxx_ffsv1) and enter "boot hd1a:/netbsd" to boot the installed system.
>How-To-Repeat:
Install NetBSD-current (amd64) on a recent Intel NUC.
>Fix:
Would using bootxx_ffsv1 help? The FS is v2 though.