how to enable /dev/ufs?

[James R. Van Artsdalen]

amd64, svn HEAD 195136 June 28, 2009

What enables /dev/ufs and /dev/ufsid?  Below /usr is labeled yet
/dev/ufs and /dev/ufsid are empty.  geom label is loaded.

[root at esata /usr/home/james]# tunefs -p /usr
tunefs: ACLs: (-a)                                         disabled
tunefs: MAC multilabel: (-l)                               disabled
tunefs: soft updates: (-n)                                 enabled
tunefs: gjournal: (-J)                                     disabled
tunefs: maximum blocks per file in a cylinder group: (-e)  2048
tunefs: average file size: (-f)                            16384
tunefs: average number of files in a directory: (-s)       64
tunefs: minimum percentage of free space: (-m)             8%
tunefs: optimization preference: (-o)                      time
tunefs: volume label: (-L)                                 usr
[root at esata /usr/home/james]# ls -la /dev/ufs
total 1
dr-xr-xr-x  2 root  wheel  512 Jul  2 23:06 .
dr-xr-xr-x  9 root  wheel  512 Jul  2 18:06 ..
[root at esata /usr/home/james]# kldstat
Id Refs Address            Size     Name
 1   13 0xffffffff80100000 e6c278   kernel
 2    1 0xffffffff80f6d000 196550   zfs.ko
 3    2 0xffffffff81104000 3a90     opensolaris.ko
 4    1 0xffffffff81108000 8958     geom_label.ko
 5    1 0xffffffff81111000 23e30    geom_mirror.ko
[root at esata /usr/home/james]# ls -la /dev/ufsid/
total 1
dr-xr-xr-x  2 root  wheel  512 Jul  2 23:06 .
dr-xr-xr-x  9 root  wheel  512 Jul  2 18:06 ..
[root at esata /usr/home/james]#