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SCSI disk error - Additional sense indicates Mechanical positioning error

Posted on 2006-07-03
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Hi All,

One of our RedHat servers (Linux zzz 2.4.18-3 #1 Thu Apr 18 07:37:53 EDT 2002 i686 unknown) is displaying this error when restarting a script that tests ICMP.

Shutting Down Pinger :SCSI disk error : host 1 channel 0
= 28000002
Info fld=0x0, Current sd08:10: sense key Hardware Error
Additional sense indicates Mechanical positioning error
I/O error: dev 08:10, sector 0

Does this error relate to RAID or simply imminent hardware failure?

Any suggestions on how to check for this sort of issue on other servers, before it gets to this point?

Regards,
Jo
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Question by:m0nk3yza
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pjedmond earned 500 total points
ID: 17030096
Based on the above I'd state that the problem was immenant hadware failure...in fact the hardware has already 'failed to perform as required' once. Don't try this, but you can get similar errors by hitting drives with a hammer whilst they are reading data as it 'shock' causes the innards of the drive to 'jump' a little.

host 1 channel 0 is the key to the location at which the erro is reported. host ID of 1 and the scsi channel of 0. Note that the RAID card will also have a host ID on each channel - often 7 or 15 (or rarely 0).

>Any suggestions on how to check for this sort of issue on other servers, before it gets to this point?

Normally ensure that SMART is enabled (available of many SCSI and IDE drives) - you will need to have the smartd running on a linux machine in order to monitor this. Another possibility is that if you have slightly more expensive RAID card, then it will od much of this monitoring for you.

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by:pjedmond
ID: 17030132
Additional sense indicates Mechanical positioning error means that one of the hard is producing faults. If this drive is part of a RAID array, then it is ..obviously... a RAID error as well!

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