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Re: [Networker] Waiting for writable volumes when volumes availables, why?
2008-03-03 15:02:52
Manel,
We have seen that volumes expected to be used (available ones) are
marked as 'read only':
mminfo -a -r "volume,volflags,state,capacity,written,%used,olabel,
labeled" | find /i "LNR101"
LNR101 r E 160 GB 158 GB full 12/18/2003 12/8/2007
If we change this flag from command line, the flag is gone:
nsrmm -o notreadonly LNR101
Mark sdlt320 tape LNR101 as not readonly? YES
mminfo -a -r "volume,volflags,state,capacity,written,%used,olabel,
labeled" | find /i "LNR101"
LNR101 160 GB 158 GB full 12/18/2003 12/8/2007
but after we change the tape from the graphical interface to
recyclable it becomes in the same state as the initial one.
Why this happens?
NetWorker has been marking recyclable volumes as read-only since v6.1.
This is standard practice. It basically tells NetWorker that the
volume can't be used again for writing _except_ for when it is loaded
for relabeling. (The "logic" behind this is that you shouldn't append
information to a recyclable volume, thus extending its expiration
period. Alternatively, if the volume is full then "logically" it's
also read-only.)
If your volumes are not becoming recyclable when you expect, etc., you
need to look for other causes than this - it's normal.
Cheers,
Preston.
--
Preston de Guise
"Enterprise Systems Backup and Recovery: A Corporate Insurance
Policy", due out August 15 2008:
http://www.crcpress.com/shopping_cart/products/product_detail.asp?sku=AU6396&isbn=9781420076394&parent_id=&pc=
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