Hello Kern,
I have set the Maximum File Size to 10 GByte for my LTO5 drive. According
to the documentation [1], every time the Maximum File Size is reach a EOF
is written to the tape, the tape will stop. To avoid this, the Maximum
File Size should set to a higher value.
Until now, I'm fine with the 10 GByte. The write speed is good and all
restores until now were reasonable fast. Should I decrease the value?
I have restored three jobs (all records were purged from catalog) with the
following bscan command (all jobs where stored on one volume)
bscan -P '<DB password>' -s -m -c /etc/bacula/bacula-sd.conf -v -V
<Volumename> <Path to tape>
After this I have records for all three jobs, but only one record in
JobMedia for this tape. A regular tape (without bscan) has serveral
records in JobMedia. Anything wrong with my bscan command?
Best Regads,
- Jummo
[1]
http://www.bacula.org/5.2.x-manuals/en/main/main/Storage_Daemon_Configuratio.html#11807
On Mon, 24 Jun 2013, Kern Sibbald wrote:
> Hello James,
>
> Normally Bacula imports or creates everything from the bscanned
> Volume that is needed to do proper restores. It can possibly have
> problems if your original job spanned two volumes and you only
> bscanned one.
>
> The other problem might be in your bacula-sd.conf file. What
> value do you have for Maximum File Size for the device you are
> using? The default is 1GB, which is the maximum any linear
> search should be (on average Bacula will need to read
> 500MB to find a single file to restore). If you have accidently
> set this to a very big number thinking it is related to the max
> size of the Volume, you will be in trouble (well, you will
> have slow restores). The name is really
> not the most descriptive one I could have chosen :-(
>
> You can check if Bacula is able to seek by listing the
> JobMedia records for the Job in which the file to be
> restore was backed up. These are the index records
> to the media for restore purposes.
>
> Best regards,
> Kern
>
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