[Bug 208365] [umass] Cannot fsck 3TB USB disk

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208365

--- Comment #35 from Graham Perrin <grahamperrin at gmail.com> ---
I reused the PersonaCrypt device with PC-BSD 11.0-CURRENTMAY2016 on two
notebooks with 4 GB memory: an Ergo Vista 621 (circa 2007) and a MacBookPro8,2
(15-inch, early 2011).

I see occasional 'CAM status: CCB request completed with an error' (examples
below) but happily, with this month's CURRENT, neither machine grinds to a
halt. More specifically, with reference to bug report 208668: 

* I no longer see 'Error 5, Retries exhausted'


$ date ; uptime ; freebsd-version ; uname -a
18 May 2016 at 19:20:43 UTC
 7:20p.m.  up  1:39, 1 users, load averages: 1.52, 1.88, 1.77
11.0-CURRENTMAY2016
FreeBSD cces3-gjp4-pcbsd-macbookpro82 11.0-CURRENTMAY2016 FreeBSD
11.0-CURRENTMAY2016 #19 5bab0d2(master): Fri May  6 17:56:25 UTC 2016    
root at devastator:/usr/obj/usr/src/sys/GENERIC  amd64
$ sudo dmesg | grep umass
umass0: <JetFlash TS256MJF2A, class 0/0, rev 1.10/1.00, addr 6> on usbus3
umass0:  SCSI over Bulk-Only; quirks = 0xc100
umass0:2:0: Attached to scbus2
da0 at umass-sim0 bus 0 scbus2 target 0 lun 0
umass0: at uhub7, port 2, addr 6 (disconnected)
da0 at umass-sim0 bus 0 scbus2 target 0 lun 0
(da0:umass-sim0:0:0:0): Periph destroyed
umass0: <Kingston DataTraveler 3.0, class 0/0, rev 2.10/1.00, addr 4> on usbus1
umass0:  SCSI over Bulk-Only; quirks = 0x8100
umass0:2:0: Attached to scbus2
da0 at umass-sim0 bus 0 scbus2 target 0 lun 0
umass0: <Kingston DataTraveler 3.0, class 0/0, rev 2.10/1.00, addr 7> on usbus1
umass0:  SCSI over Bulk-Only; quirks = 0x8100
umass0:2:0: Attached to scbus2
da0 at umass-sim0 bus 0 scbus2 target 0 lun 0
(da0:umass-sim0:0:0:0): READ(10). CDB: 28 00 02 f4 97 c2 00 00 07 00 
(da0:umass-sim0:0:0:0): CAM status: CCB request completed with an error
(da0:umass-sim0:0:0:0): Retrying command
(da0:umass-sim0:0:0:0): READ(10). CDB: 28 00 02 f4 97 c2 00 00 07 00 
(da0:umass-sim0:0:0:0): CAM status: CCB request completed with an error
(da0:umass-sim0:0:0:0): Retrying command
$ 


(In reply to Graham Perrin from comment #29)

> …  in my case the trouble began with an 
> earlier FreeBSD-based PC-BSD, 11.0-CURRENTDEC2015 
> http://lists.pcbsd.org/pipermail/testing/2015-December/010270.html

That remains a puzzle but in my opinion, not enough of a puzzle for this bug
report 208365 to remain open. 

Thanks

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