If I am understanding your question correctly, you want to know how your data is allocated across the I/O servers. By default, the data associated with a file (or data block) is spread across the servers in a round-robin fashion based on the stripe size (which is 64k by default). To see which servers have your data, issue "pvfs2-viewdist -f <full path to your file>". You will see the list of handles associated with your file. Each handle represents the name of the physical file where part of your data is stored, and each handle is located on a specific server. You can identify the server by looking at your config file, which shows the ranges of data handles owned by each server.
If I did not answer your question, let me know and I'll try again. Thanks, Becky On Thu, Jan 17, 2013 at 8:22 AM, 刚 王 <[email protected]> wrote: > > Hello, everyone, > > I'm a newer to PVFS. While I use the pvfs, I always think where is the > metadata file。 > > There is a problem, I write a very big data block into pvfs, now I have an > information about > data split: offset and length, and I want to know where is the data split > locate. > > I'm wondering whether there are some solutions to resolve this problem. > > Thank you very much. > Best Regards. > > > * > --------------------------------------------------------------------------------------------------- > * > *王刚 * > Mail: Nanjing University, 163 Xianlin Avenue, > > Qixia District Nanjing 210023, P.R.China > > Office: 1010, Computer Science Building, Xianlin Campus of Nanjing > University > *------------------------------------------------------------------------------------------------- > * > > _______________________________________________ > Pvfs2-users mailing list > [email protected] > http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users > > -- Becky Ligon OrangeFS Support and Development Omnibond Systems Anderson, South Carolina
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