debugfs&FreeBSD

[Dmitry Lunts]

Hello,All!
There is debugfs program dealing with ext2/ext3/ext4 filesystems.
Is there some tool in FreeBSD with functionality analogous to debugfs
which can operate on UFS2?
Could anyone give me a hint?
The thing is that recently I found out (thru smartctl)
several bad blocks on UFS2 partition.
The problem is how to discover which file(s) they belong to.
TIA

-- 
С уважением, Дмитрий
Best regards, Dmitry