On 11/30/2014 08:27 PM, Chris Murphy wrote:
On Sun, Nov 30, 2014 at 6:10 AM, Robert Moskowitz <rgm@htt-consult.com> wrote:
Logwatch says:

--------------------- Kernel Begin ------------------------

 WARNING:  Kernel Errors Present
    EXT4-fs error (device sdc1): e ...:  80 Time(s)
    sd 7:0:0:0: [sdc] Sense Key : Recovered Error [current] [descr ...:  14
Time(s)
  ---------------------- Kernel End -------------------------


And in /var/log/messages I see:

Nov 30 07:41:11 homebase kernel: sd 7:0:0:0: [sdc] Sense Key : Recovered
Error [current] [descriptor]
Nov 30 07:41:11 homebase kernel: Descriptor sense data with sense
descriptors (in hex):
Nov 30 07:41:11 homebase kernel:        72 01 04 1d 00 00 00 0e 09 0c 00 00
00 00 3a a6
Nov 30 07:41:11 homebase kernel:        00 32 00 06 40 50
Nov 30 07:41:11 homebase kernel: sd 7:0:0:0: [sdc] ASC=0x4 ASCQ=0x1d

Googling: sense key recovered error 0x4 0x1d, suggests it's just an
abnormal success message. Use 'smartctl -x /dev/sdc' to extract SMART
info from the drive. If this fails, then it's probably not the best
chipset in the world, hence some commands including smart commands,
aren't working.

You are a better searcher than I...

# smartctl -x /dev/sdc
smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-431.23.3.v6.x86_64] (local build)
Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net

/dev/sdc: Unknown USB bridge [0x059f:0x1053 (0x006)]
Smartctl: please specify device type with the -d option.

Use smartctl -h to get a usage summary

ARGH!!!  This is an HP SFF; I would have to dig out which model, but that would not help.  If the USB bridge is unknown, that fact that it is an HP, probably will not help.

Or is it the drive?  It has been in constant use for 3 years:

1TB Porsche Design P'9230 External Hard Drive - SuperSpeed USB 3.0

Can get a replacement now for 1/2 the price.  In fact can get a 2Tb USB drive for $80 right now.