Hi Kyle, Thanks! That answered my questions. I didn't expect it to move existing files to the new servers dataspace. I just wanted to make sure that the new server would get mixed in with the existing ones. I know our work load, and over time the total load would work it's way around to all servers as we add new datasets and remove old ones.
Thanks again! - Mike Michael P. Moore Senior Network Engineer Applied Biosystems - High Throughput Discovery Division P: 508-383-7486 ONNET: 685-7486 "Kyle Schochenmaier" <[EMAIL PROTECTED]> Sent by: [EMAIL PROTECTED] 09/04/2008 03:56 PM To "Mike P Moore" <[EMAIL PROTECTED]> cc [email protected] Subject Re: [Pvfs2-users] Increase the number of IO servers Yes you can add an IO server to the filesystem by adding an additional server entry to the config file and restarting all of the server processes (since server processes get copies of the config file at startup) No you will not need to reformat the existing filesystem. There is no mechanism to cause existing files (before you added additional servers) to be moved to the new servers' dataspace. However, by default all newly created files will be 'balanced' and put on servers in a round-robin fashion to all servers in the filesystem. If it was imperative that you rebalance existing files, I would copy the files off of the filesystem to a scratch space and then copy them back to the 'new' filesystem. You can do this after you add the servers and restart the server processes. (I would highly recommend pvfs2-cp if you have large files as regular 'cp' will be slow) Hope that gets what you need taken care of. Kyle On Thu, Sep 4, 2008 at 2:25 PM, Mike P Moore <[EMAIL PROTECTED]> wrote: > > Hi, > > Quick question that I can not seem to find an answer. Can I add new IO > server to an > existing PVFS2 filesystem without reformatting the entire > filesystem/corrupting the > existing data? Also, will it over time balance the load over the entire > filesystem? > > Thanks! > > - Mike > > Michael P. Moore > Senior Network Engineer > Applied Biosystems - High Throughput Discovery Division > P: 508-383-7486 > ONNET: 685-7486 > > _______________________________________________ > Pvfs2-users mailing list > [email protected] > http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users > > -- Kyle Schochenmaier _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
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