I'm not seeing anywhere close to 60M/s ( < 30 ).  I think I just fixed 
that.  I increased the block size to 1M, and that seemed to really 
increase the throughput, in the test I just did.  I will see tomorrow, 
when it all runs.

You should not be seeing any errors.


On 1/5/2010 1:30 PM, Tino Schwarze wrote:
> On Tue, Jan 05, 2010 at 12:48:53PM -0500, John Drescher wrote:
>
>    
>>> It looks like btape is not happy.
>>>
>>> Error reading block: ERR=block.c:1008 Read zero bytes at 326:0 on device 
>>> "Superloader-Drive" (/dev/nst0).
>>>
>>> Are your tapes old (still good)? Did you clean the drive? Latest Firmware?
>>>        
>
> The drive requested cleaning just yesterday which I did. I'm not sure
> how old the tape in question really is. I used a dell update utility and
> it updated the drive to v2181 which seems to be the latest for a
> half-height SCSI tape drive. 30MB/s seems a bit low to me - it should be
> able to do 60MB/s per spec. Or is that just theory vs. real world?
>
>    
>> I would add are you using LTO3 tapes or LTO2 tapes?
>>      
> They are labelled 400GB/800GB - all of the same kind, so they're
> definitely LTO3. The autoloader says: "Drive Idle Gen 3 Data" in it's web
> interface, so yes, I'm sure.
>
> I could check a very new tape tomorrow or try a shiny new one, just to
> be sure.
>
> Thanks so far,
>
> Tino.
>
>    


------------------------------------------------------------------------------
This SF.Net email is sponsored by the Verizon Developer Community
Take advantage of Verizon's best-in-class app development support
A streamlined, 14 day to market process makes app distribution fast and easy
Join now and get one step closer to millions of Verizon customers
http://p.sf.net/sfu/verizon-dev2dev 
_______________________________________________
Bacula-users mailing list
Bacula-users AT lists.sourceforge DOT net
https://lists.sourceforge.net/lists/listinfo/bacula-users