On 04/27/15 13:10, kott via freebsd-usb wrote:
root$ dd if=/dev/zero of=/dev/da0 seek=0x3bafff bs=512

(da0:umass-sim0:0:0:0): WRITE(10). CDB: 2a 00 00 3b af ff 00 00 01 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): WRITE(10). CDB: 2a 00 00 3b af ff 00 00 01 00
Jan  1 00:27:59  kernel: (da0:umass-sim0:0:0:0): CAM status: CCB request
completed with an error
Jan  1 00:27:59  kernel: (da0:umass-sim0:0:0:0): Retrying command
(da0:umass-sim0:0:0:0): WRITE(10). CDB: 2a 00 00 3b af ff 00 00 01 00
(da0:umass-sim0:0:0:0): CAM status: CCB request completed with an error
(da0:umass-sim0:0:0:0): Retrying command
, Retries exhausted
dd: /dev/da0: Input/output error
1+0 records in
0+0 records out

0 bytes transferred in 96.712889 secs (0 bytes/sec)
, Retries exhausted
(da0:umass-sim0:0:0:0): got CAM status 0x44
(da0:umass-sim0:0:0:0): fatal error, failed to attach to device
da0 at umass-sim0 bus 0 scbus0 target 0 lun 0
da0: < USB DISK 2.0 PMAP> s/n 7F004CFA835CDF49 detached

(da0:umass-sim0:0:0:0): Periph destroyed
(da0:umass-sim0:0:0:0): Periph destroyed

would this indicate usb Hw storage is flaky?
Thanks
kott


Hi,

Is the LBA within the range of the DISK size? Can you check if the offset is valid:

diskinfo -v da0

--HPS

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