In message <x7ptiprw5w.fsf@capsicum.wsrcc.com>, you write: 

-> 
-> I got myself a cute little intelistick usb flash memory.  It's only
-> 1/8 inch thick and should fit into a wallet nicely.  The company
-> appears to be a no-name but they did have the smallest usb flash
-> offering.  http://www.pqi1st.com/news/istick.htm The problem is that
-> the flash identifies itself as a 2654 GB.  Does this ring any bells?

[...]
->     Aug 28 20:02:13 scoville /netbsd: umass0: using SCSI over Bulk-Only
->     Aug 28 20:02:13 scoville /netbsd: scsibus1 at umass0: 2 targets, 1 lun p
-> er target
->     Aug 28 20:02:13 scoville /netbsd: scsibus1: waiting 2 seconds for device
-> s to settle...
->     Aug 28 20:02:15 scoville /netbsd: sd2 at scsibus1 target 1 lun 0: <USB C
-> ard, Intelligent Stic, 2.02> disk removable
->     Aug 28 20:02:15 scoville /netbsd: sd2: 2654 GB, 7496777 cyl, 110 head, 0
->  sec, 5456416 bytes/sect x 522432 sectors

Yes, this is a generic bug with many SCSI-over-USB devices; see PR 21475.
While it offers no readily-consumable patch, adding a PQUIRK_NOBIGMODESENSE
will likely make your device happy.

--rafal

----
Rafal Boni                                                     rafal@pobox.com
  We are all worms.  But I do believe I am a glowworm.  -- Winston Churchill