Russ, All of the backup protocol messages are limited to sizes that max out at 2TB (2^32 1KB blocks).
I am not aware of anyone that is actively maintaining the backup suite shipped with OpenAFS. I recommend that the University of Pittsburgh communicate with its commercial support provider to request an estimate for designing, implementing, and testing the necessary changes. Changes to the backup suite protocols do not require submission through a standardization process (unlike other AFS3 RPC suites). Jeffrey Altman On 5/18/2015 12:48 PM, Howard Jr, Russell A wrote: > Over the summer, we are upgrading our tape library from LTO-4 to LTO-6 > and would like to take advantage of the full capacity of the new tapes. > > > > The tapeconfig documentation indicates that the max tape size supported > is 2TB. Is this still the case? > > > > Our current drive is LTO-4 with a native uncompressed capacity of 800 GB > and a compressed capacity of 1.6TB. For our current backups, we > specified the tape capacity in the tapeconfig file as 1600G. This has > allowed us to utilize the full capacity of the LTO-4 tapes. Our new > tape drive will have a native uncompressed capacity of 2.5TB and a > compressed capacity of 6.25TB. > > > > If the 2TB limit is still in place, we would like to request that it be > increased to at least 6.25TB (or larger to support future tape capacity > increases). Once our new tape drive arrives, we are willing to test any > patches to help facilitate an increase in the tape size limit. > > > > -- > > Russ Howard > > Systems/Programmer III > > Computer Science Department > > University of Pittsburgh > > 6209 Sennott Square > > 412-624-8834 > > >
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