[OpenAFS-devel] Size limitations in OpenAFS?

[Kangesh Gunaseelan]

From what I read on openafs-devel and openafs-info archives, I believe
MR-AFS is not open-sourced at this time.  Is that right?  

The primary platforms that I am targetting are Linux and Solaris for both
servers and clients.  Will MR-AFS support Linux and Solaris any time soon?

Can you please share any insights on what is involved in changing the
file size and volume size limits in terms of the modules that needs to be 
extended?   I am trying to get a sense of effort involved in fixing these
in OpenAFS
by someone that is new to AFS.    

Why is the disk cache size limited to 1 GB?  Is this a hard limitation or
just a
recommendation?  Again, if any one can share insights on what is involved in
fixing these that would be really helpful.

I have read postings that talked about performance being slow for files
larger than
1 GB.   Is it due to the cache size limitation? what are the issues?   

Thanks much,
Kangesh


At 02:03 PM 3/30/01 +0200, Hartmut Reuter wrote:
>Kangesh Gunaseelan wrote:
>> 
>> Hi,
>> 
>> I found the following size limitations in the AFS 3.6 release notes:
>> Maximum file size - 2 GB
>> Maximum disk cache size - 1 GB
>> Maximum volume size - 8 GB
>> Number of replication server per volume - 12
>> 
>> Do these limits apply to OpenAFS sources as well or has
>> anyone enhanced the sources to get rid of the limitations?
>
>Once again (I posted this information already several times) you could
>use MR-AFS instead. There you don't have the file-size and volume-size
>limitations on the server side and we have a beta version for large file
>support on the client side running presently only rs_aix42, however.
>
>Hartmut
>
>> 
>> I am considering using AFS for streaming media files and
>> need to really get rid of the above size limitations.
>> I am yet to familiarize with the source files but would be
>> glad to hear from any one that has looked at the sources
>> regarding what is involved in changing these limits.
>> 
>> By the way, is there any performance benchmarks on
>> how AFS performs with respect to very large files?
>> 
>> Thanks,
>> Kangesh
>> 
>> _______________________________________________
>> OpenAFS-devel mailing list
>> OpenAFS-devel@openafs.org
>> https://lists.openafs.org/mailman/listinfo.cgi/openafs-devel
>
>-- 
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>Hartmut Reuter                           e-mail reuter@rzg.mpg.de
>					   phone +49-89-3299-1328
>RZG (Rechenzentrum Garching)               fax   +49-89-3299-1301 
>Computing Center of the Max-Planck-Gesellschaft (MPG) and the
>Institut fuer Plasmaphysik (IPP)
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