Re: [Bacula-users] Tape question: fast forward and rewind

2021-05-07 Thread fk+bacula--- via Bacula-users

Hello,

sorry have forgot to give the information that I use

Archive Device = /dev/nst0

In SD device config.  As I understand, the SD control the drive, maybe 
with commands like "mt -f /devnst0 rewind"?
How do I have to start the SD daemon for getting a logging file and see, 
which commands are send to the drive? (Debian 10)

For the future it would also be nice to see mtx commands.

Thanks, Frank

Am 06.05.2021 um 18:51 schrieb Kern Sibbald:

Hello,

You probably forgot to use the non-rewinding drive name when assigning 
the SD to a drive.


e.g /dev/st0   is a rewinding drive
 /dev/nst0  is a non-rewinding drive

You want the non-rewinding drive when using Bacula.  See the 
documentation.


Best regards,
Kern

On 5/5/21 6:53 AM, fk+bacula--- via Bacula-users wrote:


Hi there,
I'm using a Quantum LTO-7 tape drive. When I start a job, the drive 
does with the tape:


*bacula-sd JobId 269: Volume "CRInc-001" previously written, moving 
to end of data.
**bacula-sd JobId 269: Ready to append to end of Volume "CRInc-001" 
at file=5.**

**bacula-sd JobId 269: Spooling data ...*

so far so good. After 30 min, the tape drive rewinds the tape to BOT 
(spooling is still in progress) and after spooling is completed, the 
tape is moved again to the end of data and then it starts despooling.


Question 1): is the rewinding of the tape after 30 min a feature of 
bacula or of the tape drive? Is it to protect the out taken tape? Can 
I change the 30 min time and how long will be good?


Question 2): Can I avoid moving to the end before starting the data 
spooling? Why does bacula do this? If is there during despooling no 
enough space left, it will ask for a new volume. Or other spoken: can 
it start spooling without checking the end of the tape? How to 
configure it?


Question 3): Would it be better to do "backup to disk to tape" 
instead of using spooling to prevent unnecessary forward and back 
winding of the tapes?


Thanks, Frank



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Re: [Bacula-users] Tape question: fast forward and rewind

2021-05-06 Thread Kern Sibbald

  
  
Hello,

You probably forgot to use the non-rewinding drive name when
assigning the SD to a drive. 

e.g /dev/st0   is a rewinding drive
 /dev/nst0  is a non-rewinding drive

You want the non-rewinding drive when using Bacula.  See the
documentation.

Best regards,
Kern

On 5/5/21 6:53 AM, fk+bacula--- via
  Bacula-users wrote:


  
  Hi
there,
I'm using a Quantum LTO-7 tape drive. When I start a job,
the drive does with the tape:
  bacula-sd JobId 269: Volume "CRInc-001" previously written,
  moving to end of data.
bacula-sd JobId 269: Ready to append to end of Volume
  "CRInc-001" at file=5.
bacula-sd JobId 269: Spooling data ...
  so far so good. After 30 min, the tape drive rewinds the tape
to BOT (spooling is still in progress) and after spooling is
completed, the tape is moved again to the end of data and then
it starts despooling.
  Question 1): is the rewinding of the tape after 30 min a
feature of bacula or of the tape drive? Is it to protect the out
taken tape? Can I change the 30 min time and how long will be
good?
  
  Question 2): Can I avoid moving to the end before starting the
data spooling? Why does bacula do this? If is there during
despooling no enough space left, it will ask for a new volume.
Or other spoken: can it start spooling without checking the end
of the tape? How to configure it?
  
  Question 3): Would it be better to do "backup to disk to tape"
instead of using spooling to prevent unnecessary forward and
back winding of the tapes?
  Thanks, Frank
  
  
  
  
  
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[Bacula-users] Tape question: fast forward and rewind

2021-05-04 Thread fk+bacula--- via Bacula-users

Hi there,
I'm using a Quantum LTO-7 tape drive. When I start a job, the drive does 
with the tape:


*bacula-sd JobId 269: Volume "CRInc-001" previously written, moving to 
end of data.
**bacula-sd JobId 269: Ready to append to end of Volume "CRInc-001" at 
file=5.**

**bacula-sd JobId 269: Spooling data ...*

so far so good. After 30 min, the tape drive rewinds the tape to BOT 
(spooling is still in progress) and after spooling is completed, the 
tape is moved again to the end of data and then it starts despooling.


Question 1): is the rewinding of the tape after 30 min a feature of 
bacula or of the tape drive? Is it to protect the out taken tape? Can I 
change the 30 min time and how long will be good?


Question 2): Can I avoid moving to the end before starting the data 
spooling? Why does bacula do this? If is there during despooling no 
enough space left, it will ask for a new volume. Or other spoken: can it 
start spooling without checking the end of the tape? How to configure it?


Question 3): Would it be better to do "backup to disk to tape" instead 
of using spooling to prevent unnecessary forward and back winding of the 
tapes?


Thanks, Frank

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