Hi,

11.12.2007 22:06,, Michael Galloway wrote::
> thanks for helping arno, here is what i've found:
> 
> On Tue, Dec 11, 2007 at 09:36:06PM +0100, Arno Lehmann wrote:
>> First of all, it's quite important to know why it's been marked as 
>> "Error". You can look that up in the log file Bacula, by default, 
>> writes. A grep for the volume name should tell you something.
>>
> 
> 10-Dec 09:03 molbio-sd JobId 18: Volume "002045L4" previously written, moving 
> to end of data.
> 10-Dec 09:34 molbio-sd JobId 18: Error: Unable to position to end of data on 
> device "LTO4" (/dev/nst0): ERR=dev.c:1355 ioctl MTFSF error on "LTO4" 
> (/dev/nst0). ERR=Input/output error.

Ok, so chances are that this tape can be read without problems.

> 10-Dec 09:34 molbio-sd JobId 18: Marking Volume "002045L4" in Error in 
> Catalog.
> 10-Dec 09:34 molbio-dir JobId 18: Using Volume "002044L4" from 'Scratch' pool.
> 
> is this a tape failure? these are new LTO4 tapes.

Either a tape or tape drive problem, I think.

A look in the system log - you've got the date and time, so you should 
find the time range easily - might tell you more. It could be a 
one-time hardware problem you'll never encounter again, it could be a 
tape where the final EOF wasn't written for whatever reason, or it's 
really an unusable tape.

Personally, I'd mark the volume as used and take a not to observe this 
tape. If, during normal operations, more errors happen, remove it.

Alternatively, you could also seriously test this tape, for example 
using btape, but that takes quite a while with LTO...

So, I suggest to update the volume status to used and see what 
happens. Restores shouldn't be affected by problems finding the EOD 
marker.

Arno

> -- michael
> 
>  
> 

-- 
Arno Lehmann
IT-Service Lehmann
www.its-lehmann.de

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