Am 02.06.24 um 17:00 schrieb Rob Gerber:
Well, I think something is wrong here. I WOULD NOT write any data or an
EOF to any production tapes with valuable data. This will almost
certainly lead to data loss. To be perfectly clear, if you rewind a tape
and write EOF to that tape, the data previously written to that tape
will be inaccessible without specialist hardware! The new (repaired?)
drive should be able to read your old backups!
You are right.
And no worries, I only write that WEOF to tapes I want to "reset", I
don't expect to read any data from them after doing so.
In theory you should be able to take tapes from drive A and read and
write them from drive B where both drives are the same LTO generation.
Tapes having been labeled in a different drive of the same generation
should not have any impact on a different drive of the same generation
being able to read or write that tape. If you think about it,
organizations often use libraries with multiple tape drives installed
inside them and beyond ensuring that the correct tape generation is
loaded into the correct drives, backups written by these libraries
aren't locked to a specific tape drive. Organizations also ship tapes
across the world to other sites for data transfer. Being locked to a
single tape drive would be an absolutely unacceptable state of affairs.
So something is wrong in your case.
Right again. Makes me worry ...
Things to try:
Please document the specific errors you have been seeing, and the
results for the following tests.
First, you should be able to insert a previously used tape that should
have good data from the old drive on it, and perform a restore against
that tape. If this fails, something is definitely wrong.
I will try that later today.
Secondly, if you put a scratch tape with no valuable data on it (THIS
TAPE WILL BE OVERWRITTEN AND ALL DATA ON IT WILL BE LOST) and run the
btape calibration utility, then run the btape test commands, what
results do you get? (Check utility and problem resolution manuals for
more info). If this fails, the drive is probably still defective.
I ran the test last week after receiving the repaired drive and the
tests were completely OK.
Third, are you using an encryption key in your drive? If you were, you
may need to reload that key into the drive firmware. The repair process
may have involved factory resetting the tape drive or otherwise deleting
the encryption key from memory. If this is the case, it could explain
why you have been having issues with previously labeled tapes.
no encryption key
Fourth, please reply back with the results from the above tests, and
with any other information you think may be important.
I will do asap. Right now I wait for their admin to swap all the tapes etc
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