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Re: [Networker] Networker and autocleaning
2006-10-11 09:19:21
On Oct 11, 2006, at 6:14 AM — 10/11/06, Lars Hecking wrote:
If a tape library supports autocleaning, what are the recommended
settings
for it on the library and in networker? I guess it's more
important to have
it set in networker, will enabling it on the autoloader interfere?
Some pretty strange things were happening on my Superloader
yesterday. The
tape drive got cleaned during a backup, and the cleaning tape
remained in
the drive. After unloading it manually and restarting the backup,
the drive
got cleaned again a few hours after the backup finished. Then,
checking up on
the next backup last night, I found that the cleaning tape had
been moved to
the mail slot! (Superloader = new, cleaning tape = 3 uses).
I suggest that NetWorker be set to do autocleaning and the library's
autocleaning feature be disabled. I have tried various settings on
both tape library autocleaning and NetWorker's autocleaning for two
different libraries, and NetWorker is the way to go.
Enabling a tape library's auto cleaning feature with NetWorker is
that it can create a resource contention issue. For example, if your
library attempts to clean a tape drive, but NetWorker wants to load a
tape into that same drive, bad things can happen. On the Qualstar
library that's connected to a storage node here, this situation is
not a big deal, it just delays tape mounts for a few minutes. On our
PetaSite, if we configure that tape library for autocleaning, it will
effectively disable NetWorker's ability to mount tapes, which is
certainly not a good thing.
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