2012/1/31 Rao, Uthra R. (GSFC-672.0)[ADNET SYSTEMS INC] <uthra.r.rao AT nasa 
DOT gov>:
> I have Bacula 5.2.3 compiled on a RHEL 6 Server. I have IBM TS3200 Tape
> Library with two tape drives: LTO5 FH. I looking to see how I can get the
> best performance and speed up my backups
>
>
>
> I checked with IBM and was told that my tape drives support a maximum block
> size of 256k.
>
>
>
> My understanding is the default block size in Bacula is 64k
>
>
>
> When I do :
>
>
>
> # tapeinfo -f /dev/sg0
>
> Product Type: Tape Drive
>
> Vendor ID: 'IBM     '
>
> Product ID: 'ULT3580-TD5     '
>
> Revision: 'B5BF'
>
> Attached Changer API: No
>
> SerialNumber: '1068007095'
>
> MinBlock: 1
>
> MaxBlock: 16777215
>
> SCSI ID: 0
>
> SCSI LUN: 0
>
> Ready: yes
>
> BufferedMode: yes
>
> Medium Type: 0x58
>
> Density Code: 0x58
>
> BlockSize: 0
>
> DataCompEnabled: yes
>
> DataCompCapable: yes
>
> DataDeCompEnabled: yes
>
> CompType: 0x1
>
> DeCompType: 0x1
>
> BOP: yes
>
> Block Position: 0
>
> Partition 0 Remaining Kbytes: -1
>
> Partition 0 Size in Kbytes: -1
>
> ActivePartition: 0
>
> EarlyWarningSize: 0
>
> NumPartitions: 0
>
> MaxPartitions: 1
>
>
>
> I added the min/max block size in the Bacula-sd.conf “Device” section:
>
>   Minimum Block Size = 262144
>
>   Maximum Block Size = 262144
>
>
>
> This really did not make any difference the “tapeinfo -f /dev/sg0” still
> shows the BlockSize:0 and MinBlock: 1/ MaxBlock: 16777215.
>
>
>
> Has any ne out there done some Bacula tuning with the block size? I would
> really appreciate some help on this.
>

Did you erase the tape after the change?

John

------------------------------------------------------------------------------
Keep Your Developer Skills Current with LearnDevNow!
The most comprehensive online learning library for Microsoft developers
is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3,
Metro Style Apps, more. Free future releases when you subscribe now!
http://p.sf.net/sfu/learndevnow-d2d
_______________________________________________
Bacula-users mailing list
Bacula-users AT lists.sourceforge DOT net
https://lists.sourceforge.net/lists/listinfo/bacula-users