extra data not valid + other messages

[Venkatesh Krishnamurthi]

Hi,

  I keep getting these on my IBM 9ZX disks about once a day.  An earlier
thread in this mailing list revealed that others too have been noticing
these messages in their logs.

  In my case the sector numbers are all over the map,  so these appear to
be caused by transient (and recoverable) errors in operation.  For all its
worth, scsiinfo shows that the disk grown defect list is still at 0.  Since
the disk has not lost any sectors and I have lost no data,  I've come to 
treat these as annoying but non-fatal errors.

  If someone has a better explanation,  please share it with us and set our
minds at ease.

Venkatesh

> 
> I'm getting the following kernel messages: SCSI disk error, extra data not
> valid, Additional sense indicates Internal target failure, and scsidisk
> I/O error. This cannot be good. What does this actually mean? Is my disk
> dying? I'm appending the kernel messages to this message. Thanks in
> advance.
> 
> Mar 28 04:04:13 amlai2 kernel: SCSI disk error : host 0 channel 0 id 0 lun 0 return code = 28000002
> Mar 28 04:04:13 amlai2 kernel: extra data not valid Current error sd08:03: sense key Hardware Error
> Mar 28 04:04:13 amlai2 kernel: Additional sense indicates Internal target failure
> Mar 28 04:04:13 amlai2 kernel: scsidisk I/O error: dev 08:03, sector 98352
> [snip]
> Mar 31 04:30:34 amlai2 kernel: SCSI disk error : host 0 channel 0 id 0 lun 0 return code = 28000002
> Mar 31 04:30:34 amlai2 kernel: extra data not valid Current error sd08:03: sense key Hardware Error
> Mar 31 04:30:34 amlai2 kernel: Additional sense indicates Internal target failure
> Mar 31 04:30:34 amlai2 kernel: scsidisk I/O error: dev 08:03, sector 374148
> [snip]
> Apr  2 20:17:31 amlai2 kernel: SCSI disk error : host 0 channel 0 id 0 lun 0 return code = 28000002
> Apr  2 20:17:31 amlai2 kernel: extra data not valid Current error sd08:0e: sense key Hardware Error
> Apr  2 20:17:31 amlai2 kernel: Additional sense indicates Internal target failure
> Apr  2 20:17:31 amlai2 kernel: scsidisk I/O error: dev 08:0e, sector 2
> [snip]
> Apr  4 03:20:31 amlai2 kernel: SCSI disk error : host 0 channel 0 id 0 lun 0 return code = 28000002
> Apr  4 03:20:31 amlai2 kernel: extra data not valid Current error sd08:0a: sense key Hardware Error
> Apr  4 03:20:31 amlai2 kernel: Additional sense indicates Internal target failure
> Apr  4 03:20:31 amlai2 kernel: scsidisk I/O error: dev 08:0a, sector 524350
> 
> --
> Albert Lai <amlai at columbia.edu>           1018D East Campus
> Residential Computer Consultant           411 W. 116th St.
> Columbia University                       New York, NY 10027
> http://www.columbia.edu/~aml61            (212)853-4854
> 
> 
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