On Friday 02 February 2007 18:16, Andreas Helmcke wrote:
> On 02.02.2007 17:24, Martin Simmons wrote:
> > The error was from Drive-2 but your second log entry is from Drive-1. 
> > Maybe Drive-2 is faulty or needs cleaning?  Also the tape may be
> > intermittenly faulty.
>
> The error occurred on 2 different drives and 4 different tapes.
> None of the drives requests cleaning, but i will try cleaning.

If you are getting errors on 2 drives with different tapes, then you are very 
likely having hardware problems: bad scsi card, bad or poorly terminated 
cables, cables too long, other scsi devices interfering, broken tape 
controller.

>
> > Was anything written to the syslog around 01-Feb 00:35?
>
> Thanks for this hint; there was:
> >> Feb  1 00:35:59 elablnsrv04 kernel: st2: Error with sense data: <6>st2:
> >> Current: sense key: Aborted Command Feb  1 00:35:59 elablnsrv04 kernel: 
> >>    Additional sense: Data phase error Feb  1 00:35:59 elablnsrv04
> >> kernel: Info fld=0xfc00
>
> I checked the log for more error messages and found the following (from
>
> earlier brocken backup jobs):
> >> Jan 28 00:17:19 elablnsrv04 kernel: st2: Error with sense data: <6>st2:
> >> Current: sense key: Hardware Error Jan 28 00:17:19 elablnsrv04 kernel:  
> >>   Additional sense: Internal target failure Jan 28 00:17:19 elablnsrv04
> >> kernel: Info fld=0xfc00
> >> Jan 28 00:47:22 elablnsrv04 kernel: st0: Error with sense data: <6>st0:
> >> Current: sense key: Hardware Error Jan 28 00:47:22 elablnsrv04 kernel:  
> >>   Additional sense: Internal target failure Jan 28 00:47:22 elablnsrv04
> >> kernel: Info fld=0xfc00
> >> Jan 28 01:08:05 elablnsrv04 kernel: st0: Error with sense data: <6>st0:
> >> Current: sense key: Hardware Error Jan 28 01:08:05 elablnsrv04 kernel:  
> >>   Additional sense: Internal target failure Jan 28 01:08:05 elablnsrv04
> >> kernel: Info fld=0xfc00
>
> When the error occurs there are always exactly 2 blocks missing on the
> tape: Bacula-log:
>       Error: Re-read of last block OK, but block numbers differ. Last
> block=440503 Current block=440505.
>
> with different block-numbers but every time a difference of 2.
>
> Andreas
>
>
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