extra data not valid + other messages

[Albert Max Lai]

On Sun, 4 Apr 1999, Venkatesh Krishnamurthi wrote:

>   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.

I also have the IBM 9ZX. I guess that this error might be specific to this
model. Do you happen to have tagged queueing enabled? If so, what do you
have the depth set to? I don't recall ever having seen this error before I
enabled tagged queueing. (I've had my disk for a while now, and this is
the first time I've ever noticed these messages.) Going back through my
logs, the last time this happened before Mar 28 was Mar 18, which is the
day after I started using tagged queueing. The other thing that worries me
is that the frequency of this message is suddenly higher than before. What
I will probably do as an experiment is to turn off tagged queueing, and
see if I get any more of these messages. (That is unless I here from
someone who is getting these messages and doesn't have tagged queueing
enabled.)

>   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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> > 
> 
> 
> 
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--
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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