unknown error during root mount on boot (fstab) in 11.0-RELEASE (after updating)

[Christoph P.U. Kukulies]

I stepwise did an upgrade from a FreeBSD 9.2 to 11.0-RELEASE system 
using freebsd-update.

It went from 9.2 to 10.0 to 10.3 to 11.0. In the last step the system 
ran into an (unknown) error

in the phase where filesystem should get mounted. I found out that it 
runs through when I uncomment the

lines as shown in the fstab:


# Device        Mountpoint      FStype  Options Dump    Pass#
/dev/ada1p2     /               ufs     rw      1       1
/dev/ada1p3     none            swap    sw      0       0
#/dev/ad6s1a     /mnt/ad6s1a    ufs     rw      1       1
#/dev/ad6s1e     /mnt/ad6s1a/usr        ufs     rw      2       2
#/dev/ad6s1d     /mnt/ad6s1a/var ufs    rw      2       2
/dev/acd0               /cdrom          cd9660  ro,noauto 0       0



The ad6 lines are the offending ones.


I would like to provide more informaion but it escaped me for the moment 
how I can catch

the output during boot into a file and post it here.

Any help appreciated.


--

Christoph