Montagni, Giovanni wrote:
This is the output of dd command:
[root@auriga root]# dd if=/dev/nst0 bs=32k count=1
0+0 records in
0+0 records out
That means that you have an empty tape.
Can you write to the tape and read it back at all???
I also tried to set blocksize to 0 (mt -t /dev/st0 setblk 0 or mt -t /dev/nst0
setblk 0) but nothing has changed...
The tape was on the beginning, as i can see with mt -t /dev/st0 status.
This means that the old drive stopped to write anything on tape? but amanda
report that the backup was executed correctly. In addiction, old drive can read
amanda label.
-----Messaggio originale-----
Da: Paul Bijnens [mailto:paul.bijnens AT xplanation DOT com]
Inviato: venerdì 30 settembre 2005 10.34
A: Montagni, Giovanni
Cc: amanda-users AT amanda DOT org
Oggetto: Re: Question about changing Tape Drive
Montagni, Giovanni wrote:
I have changed our tape drive, because it started to fail to write on tape.
I have changed it with the same model.
After sostitution, amanda cannot recognise the tape, every day it give me error like
"Not an amanda tape", and i have to amrmtape then amlabel the tape again.
Is it possible to solve this problem?
First, can you read the tape with "dd"?
Try to read the label:
dd if=/dev/st0 bs=32k count=1
Is the label you see correct?
A frequent problem is blocksize difference.
I work in variable blocksize.
On linux:
mt -t /dev/st0 defblksize 0 # add this in /etc/rc.*/* somewhere
mt -t /dev/st0 setblk 0 # or this just before handling tape
If your tapes were written with a fixed blocksize, you should
use that value again (or relabel the tapes, and switch to variable
blocksize).
--
Paul Bijnens, Xplanation Tel +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM Fax +32 16 397.512
http://www.xplanation.com/ email: Paul.Bijnens AT xplanation DOT com
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