[Pvfs2-users] Changing stripe size programmatically

Rob Ross rross at mcs.anl.gov
Fri Oct 16 23:15:05 EDT 2009


Hi,

Yes you can do this via parameters to PVFS_sys_create().

It would be easiest for you to look at how this is done in ROMIO, in  
this file:
   src/mpi/romio/adio/ad_pvfs2/ad_pvfs2_open.c

Rob

On Oct 16, 2009, at 9:59 PM, Kshitij Mehta wrote:

> Thank you. I know about these options to change the stripe size (in  
> the config file or using setfattr). But that still doesn't solve my  
> problem as I need to change the stripe size programmatically.
>
> Thanks,
> Kshitij
>
>
> On Oct 16, 2009, at 5:12 PM, Kyle Schochenmaier wrote:
>
>> Kshitij -
>>
>> You can modify the stripe size of pvfs2 at run-time :  (best to do it
>> here or in the config)
>> http://www.pvfs.org/cvs/pvfs-2-8-branch.build/doc/pvfs2-faq/pvfs2-faq.php
>> (Chapter 6.6)
>> Please note that modifications during run-time will only be  
>> propagated
>> to *NEW* files.
>>
>> Additionally you can set the distribution params in the config file.
>> http://www.pvfs.org/cvs/pvfs-2-8-branch-docs/doc//pvfs-config-options.php
>>
>>
>> Cheers,
>>
>> Kyle Schochenmaier
>>
>>
>>
>> On Fri, Oct 16, 2009 at 5:02 PM, Kshitij Mehta <kvm1983 at gmail.com>  
>> wrote:
>>> Hello,
>>>
>>> Is there a way to change the stripe size for pvfs2  
>>> programmatically? I
>>> remember seeing a C function, but am unable to locate it. My  
>>> apologies if
>>> this has been asked before.
>>>
>>> Thanks,
>>> Kshitij Mehta
>>> Graduate Student
>>> University of Houston
>>> www.cs.uh.edu/~kmehta
>>>
>>> _______________________________________________
>>> Pvfs2-users mailing list
>>> Pvfs2-users at beowulf-underground.org
>>> http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
>>>
>
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