rad5s1b shows up mysteriously instead of ad5s1b

[Kjell B.]

I just moved my disks to a different controller and this happened to
(part of) my swap. I have searched the mailing lists, the FreeBSD
homepage and Googled without success.

I basically have two disks: ad0 and ad1 before the move; ad4 and ad5
after the move. ad0/ad4 is the main disk while ad1/ad5 is my backup disk.

Before the move:

# See the fstab(5) manual page for important information on automatic mounts
# of network filesystems before modifying this file.
#
# Device                Mountpoint      FStype  Options         Dump
Pass#
/dev/ad0s1b             none            swap    sw              0       0
/dev/ad1s1b             none            swap    sw              0       0
/dev/ad0s1a             /               ufs     rw              1       1
/dev/ad1s1e             /rootback       ufs     rw              1       1
/dev/ad1s1f             /backup         ufs     rw              2       2
/dev/ad0s1f             /tmp            ufs     rw              2       2
/dev/ad0s1g             /usr            ufs     rw              2       2
/dev/ad0s1e             /var            ufs     rw              2       2
#/dev/ad1s1a            /mnt/newroot    ufs     rw              1       1
#/dev/ad1s1e            /mnt/newvar     ufs     rw              2       2
#/dev/ad1s1f            /mnt/newtmp     ufs     rw              2       2
#/dev/ad1s1g            /mnt/newusr     ufs     rw              2       2
/dev/acd0c              /cdrom          cd9660  ro,noauto       0       0
/dev/acd1c              /cdrom1         cd9660  ro,noauto       0       0
proc                    /proc           procfs  rw              0       0
/dev/ad4s2  /ntfs/c  ntfs  rw,noauto  0  0
/dev/ad4s5  /ntfs/f  ntfs  rw,noauto  0  0
/dev/ad4s6  /ntfs/g  ntfs  rw,noauto  0  0
/dev/ad4s7  /ntfs/h  ntfs  rw,noauto  0  0

After the move (and physical removal of the NTFS disk):

# See the fstab(5) manual page for important information on automatic mounts
# of network filesystems before modifying this file.
#
# Device                Mountpoint      FStype  Options         Dump
Pass#
/dev/ad4s1b             none            swap    sw              0       0
/dev/ad5s1b             none            swap    sw              0       0
/dev/ad4s1a             /               ufs     rw              1       1
/dev/ad5s1e             /rootback       ufs     rw              1       1
/dev/ad5s1f             /backup         ufs     rw              2       2
/dev/ad4s1f             /tmp            ufs     rw              2       2
/dev/ad4s1g             /usr            ufs     rw              2       2
/dev/ad4s1e             /var            ufs     rw              2       2
#/dev/ad1s1a            /mnt/newroot    ufs     rw              1       1
#/dev/ad1s1e            /mnt/newvar     ufs     rw              2       2
#/dev/ad1s1f            /mnt/newtmp     ufs     rw              2       2
#/dev/ad1s1g            /mnt/newusr     ufs     rw              2       2
/dev/acd0c              /cdrom          cd9660  ro,noauto       0       0
/dev/acd1c              /cdrom1         cd9660  ro,noauto       0       0
proc                    /proc           procfs  rw              0       0
#/dev/ad4s2  /ntfs/c  ntfs  rw,noauto  0  0
#/dev/ad4s5  /ntfs/f  ntfs  rw,noauto  0  0
#/dev/ad4s6  /ntfs/g  ntfs  rw,noauto  0  0
#/dev/ad4s7  /ntfs/h  ntfs  rw,noauto  0  0

My swap areas are not ad4s1b and ad5s1b as I have defined, but rather
ad4s1b and rad5s1b. Webmin reports:
Mounted as 	Type 	Location 	In use? 	Permanent?
Virtual Memory 	Virtual Memory (swap) 	/dev/ad4s1b 	Yes 	Yes
Virtual Memory 	Virtual Memory (swap) 	/dev/ad5s1b 	No 	Yes
Virtual Memory 	Virtual Memory (swap) 	/dev/rad5s1b 	Yes 	No

Any explanation? What is rad? Is more info needed and if so: what?

-- 
Kjell