On Wed, Dec 7, 2011 at 8:45 AM, Mauro Colorio <mauro.colorio AT gmail DOT com> 
wrote:
> I got a problem rebooting bacula system, when the machine restart I
> got errors like:
>
> /etc/bacula/scripts/mtx-changer /dev/sg3 load 3 /dev/nst0 0
>
> mtx: Request Sense: Long Report=yes
> mtx: Request Sense: Valid Residual=no
> mtx: Request Sense: Error Code=70 (Current)
> mtx: Request Sense: Sense Key=Illegal Request
> mtx: Request Sense: FileMark=no
> mtx: Request Sense: EOM=no
> mtx: Request Sense: ILI=no
> mtx: Request Sense: Additional Sense Code = 20
> mtx: Request Sense: Additional Sense Qualifier = 00
> mtx: Request Sense: BPV=no
> mtx: Request Sense: Error in CDB=no
> mtx: Request Sense: SKSV=no
> READ ELEMENT STATUS Command Failed
>
>
> looking in deep I found that link changed the name of the device from
> /dev/sg3 to /dev/sg4 changing this params
> in bacula-sd.conf makes bacula working again...how can I prevent this 
> problems?
>

udev rules. Search the list.

John

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