Is there way to get filename for specific LBA?

[Ross]

Aug 31 05:13:24 da kernel: ad6: WARNING - READ_DMA UDMA ICRC error
(retrying request) LBA=107491647


#  dd if=/dev/ad6 of=/dev/null bs=1m seek=107491647 count=1
dd: /dev/null: Inappropriate ioctl for device

Another question: why does it fail?


# dd if=/dev/ad6 of=/var/tmp/xxxx bs=1m seek=107491647 count=1
1+0 records in
1+0 records out
1048576 bytes transferred in 0.026658 secs (39334650 bytes/sec)

So no errors. I looked at bsdlabel — it's partition f, /home. But what
is the file name?