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Re: bad sectors on disk

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Hi,

Ritesh Raj Sarraf's kernel wrote:
> [156278.815976] sd 1:0:0:0: [sdb] UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x00
> [156278.823864] sd 1:0:0:0: [sdb] CDB: opcode=0x28 28 00 9a 40 04 47 00 00 08 00
> [156278.831152] blk_update_request: I/O error, dev sdb, sector 2587886663

This was an attempt to read data from address 0x9a400447,
which would mean your storage medium has a capacity of 1.2 TB at least.

Is this log snippet preceded by lines with "Sense Key" or "Add. Sense" ?


The text "UNKNOWN(0x2003)" is quite popular in the web. But i did not find
further enlightenment yet. (The problem is near enough to my own sports
to make me curious.)

The message part seems to be quite new in the kernel:
  /usr/src/linux-4.1.6/drivers/scsi/scsi_logging.c  line 458
I cannot find it in Jessie's 3.16.
Reason for "UNKNOWN" is that scsi_mlreturn_string() in
drivers/scsi/constants.c did not find 0x2003 in scsi_mlreturn_arr.
This is riddling, because in include/scsi/scsi.h i see
  #define FAILED          0x2003
which i see mentioned in drivers/scsi/constants.c as member of
scsi_mlreturn_arr[]:
  #define scsi_mlreturn_name(result)      { result, #result }
  ...
        scsi_mlreturn_name(FAILED),

Looks like something with the macro magic of scsi_mlreturn_name()
does not work as expected.
  https://gcc.gnu.org/onlinedocs/cpp/Stringification.html
Or scsi_mlreturn_string() does not search far enough. But the
many definitions of ARRAY_SIZE in kernel headers look ok to my
userlander eyes.

What kernel version exactly are you using ?

-------------------------------------------------------------------

Whatever, "FAILED" instead of "UNKNOWN(0x2003)" will not help much
to find the reason for the problem.

If it happened with an optical drive, i'd say it is a volatile hardware
error in one of the participating bus controllers or in their cabling.
(The current main suspect for controller problems is USB 3.)


Have a nice day :)

Thomas

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Thread

bad sectors on disk Ritesh Raj Sarraf <rrs@researchut.com> - 2016-02-09 10:00 +0100
  Re: bad sectors on disk Hans <hans.ullrich@loop.de> - 2016-02-09 10:20 +0100
  Re: bad sectors on disk "Thomas Schmitt" <scdbackup@gmx.net> - 2016-02-09 11:20 +0100
    Re: bad sectors on disk Ritesh Raj Sarraf <rrs@researchut.com> - 2016-02-09 12:00 +0100
      Re: bad sectors on disk "Thomas Schmitt" <scdbackup@gmx.net> - 2016-02-09 13:00 +0100
        Re: bad sectors on disk Eike Lantzsch <zp6cge@gmx.net> - 2016-02-09 13:30 +0100
          Re: bad sectors on disk Eike Lantzsch <zp6cge@gmx.net> - 2016-02-09 13:50 +0100
        Re: bad sectors on disk Ritesh Raj Sarraf <rrs@researchut.com> - 2016-02-10 15:20 +0100
          Re: bad sectors on disk "Thomas Schmitt" <scdbackup@gmx.net> - 2016-02-10 15:40 +0100
      Re: bad sectors on disk jdd <jdd@dodin.org> - 2016-02-09 13:10 +0100
  Re: bad sectors on disk Jonathan Dowland <jmtd@debian.org> - 2016-02-09 16:20 +0100
  Re: bad sectors on disk David Christensen <dpchrist@holgerdanske.com> - 2016-02-09 20:30 +0100
    Re: bad sectors on disk "Thomas Schmitt" <scdbackup@gmx.net> - 2016-02-09 21:00 +0100
  Re: [computers] bad sectors on disk TWS Admin <tws@wilderness.org.au> - 2016-02-11 05:00 +0100
    Re: [computers] bad sectors on disk Joseph Loo <jloo20111002@gmail.com> - 2016-02-11 05:10 +0100
      Re: [computers] bad sectors on disk David Wright <deblis@lionunicorn.co.uk> - 2016-02-12 05:20 +0100
        Re: bad sectors on disk "Thomas Schmitt" <scdbackup@gmx.net> - 2016-02-12 08:50 +0100
          Re: bad sectors on disk Gene Heskett <gheskett@shentel.net> - 2016-02-12 09:30 +0100
            SATA cables David Christensen <dpchrist@holgerdanske.com> - 2016-02-12 18:30 +0100
              Re: SATA cables Ric Moore <wayward4now@gmail.com> - 2016-02-14 01:20 +0100
                Re: SATA cables Gene Heskett <gheskett@shentel.net> - 2016-02-14 02:00 +0100
                Re: SATA cables David Christensen <dpchrist@holgerdanske.com> - 2016-02-14 05:40 +0100
                Re: SATA cables Ric Moore <wayward4now@gmail.com> - 2016-02-14 17:30 +0100
          Re: bad sectors on disk Ritesh Raj Sarraf <rrs@researchut.com> - 2016-02-16 14:40 +0100
            Re: bad sectors on disk Ritesh Raj Sarraf <rrs@researchut.com> - 2016-02-16 15:00 +0100
            Re: bad sectors on disk "Thomas Schmitt" <scdbackup@gmx.net> - 2016-02-16 15:10 +0100
        Re: [computers] bad sectors on disk jdd <jdd@dodin.org> - 2016-02-12 09:30 +0100

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