I used gtkpod for a bit then exited and unmounted /mnt/ipod, then tried
rmmod sbp2 - which hung. I couldn't even use strace on it.
Last few log messages:
Jun 9 21:03:43 localhost scsi.agent[3416]: disk at
/devices/pci0000:00/0000:00:0c.2/fw-host0/000a2700020795ec/000a2700020795ec-0/host1/1:0:0:0
Jun 9 21:29:18 localhost kernel: ieee1394: sbp2: Logged out of SBP-2 device