Dear Christoph,
In message <1be9171a-8dd0-48f3-aad5-d4ff9a8b7...@uni-koblenz.de> you wrote:
>
> I think I know the answer ("not possible") but maybe someone has an idea:
Right - you cannot (re-) write any data at the start of the tape
without loing all data after it.
> Some years ago I labeled all my LTO-6 tapes with manual printed
> stickers "LTO6-###". As you can see, there are 5 alphanumeric
> characters followed by 3 digits. The barcode standard allows this
> and my LTO devices never had problems with that kind of labels.
> My new tape library (Overland Neo Series T48) does. Sometimes it
> recognises the labels, sometimes not. I think this is because
> LTO-labels should have max. 3 characters followed by max 3 digits
> followed by the LTO series number (LTO###L6).
> I would have no problem in printing new labels, but the tapes have
> to be physically relabelled. Is it possible without loosing the
> tape data? (no).
No, this cannot be done. At best, you can relabel the tapes when
you re-use them, i. e. when you rewrite all of the content anyway.
> Any other ideas how to switch my old tapes to the new label scheme?
Well... who really needs the barcode labels to be exactly the same as
the on-tape and in-database labels? I think this is just for your
own convenience, so you can match the "mtx status" output and bacula
messages against the physical label on the tapes.
But then - in your old labels, the "LTO" part is redundant at least,
and you don't really need it to identify a tape if it's the same on
all tapes. If I were you, I would just print new bracode labels,
and omit the "LT" part. i. e., instead of "LTO6-###" you get
"O6-###L6". Then you can still easily match the "real" label to the
barcode stickers, and don't have to change anything software-wise.
And the "O6-" prefeix could even be explained as "old LTO6 label"
format :-)
[Of course, you should not attempt to use this with a "label ...
barcodes" command and result in the old tape names; but I guess for
new tapes you would switch to a new label scheme anyway.]]
Hope this helps.
Viele Grüße,
Wolfgang Denk
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
The ultimate barrier is one's viewpoint.
- Terry Pratchett, _The Dark Side of the Sun_
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