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FW: DDS4 DAT Tape Drive Failure? Working again -temporarily
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Post FW: DDS4 DAT Tape Drive Failure? Working again -temporarily 
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Hi Again
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This has baffled me. The previous night's report at my remote
site has stated that a backup was successful without errors! Any ideas
why backup has worked on Thursday night when all week (Monday to
Wednesday) the tape drive had input/output errors?
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Latest log here:-
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<snip>
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Hi Alan,
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Don't you just hate these kinds of things?? And there I was thinking
electronic pieces of kit were supposed to be logical and predictable Smile
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Could well be a loose connection or similar, or something is on its way
out. As you're not local to the device, is there someone who is that you
can get to have a look (the tape operator for instance)??? May be worth
getting them to have a cursory look to see if something is amiss (SCSI
cable/terminator not plugged in properly, chewed by mice, whatever).
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Or it could just have been that it was accidentally powered off and
someone just returned the power (on a power strip with something else
non-critical). It then just carried on using its *old* /proc entry as
Martin mentioned (although I thought /proc didn't keep hold of older
entries and just dumped as soon as the kernel detects a device is not
attached).
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You could of course just wait for a few days and see if it repeats
itself. If it does (after you have ascertained that the cables are
good), then I'd strongly suspect some kind of failure and start finding
out where. First port of call would be the cable/terminators, and then
the physical hardware. Just localise each piece and see which bit is
broken. Unfortunately for you, that sounds like a visit will be
required.
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Best of luck Smile
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Dan
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--

Dan Hawker
Linux System Administrator
Astrium
http://www.Astrium.eads.net

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