Sumit - You're correct. Running two servers on the same node (one for data, one for metadata) was the first thing we tried. In the end we decided it would be better just to go ahead and add this functionality directly to Trove. I'm not sure how significant the performance hit would be from running two servers.
--Nick On Fri, May 29, 2009 at 9:52 AM, Sumit Narayan <[email protected]> wrote: > This is pretty interesting. > > I am just curious, can't this be done by running two servers on the > same node and treating one as metadata server and other as I/O server > - each having their own data space. It might add just a little extra > load on the node. I am guessing PVFS takes some advantage of putting > metadata and data on same node. Can someone fill me in as to what they > are. > > Thanks, > Sumit. > > > > On Thu, May 28, 2009 at 5:17 PM, Sam Lang <[email protected]> wrote: > > > > Hi David, > > > > I don't see any problems with putting that in future releases once its > > ready. It would be great if you could update the developers list with > your > > planned changes, and possibly send along patches as you have them, > allowing > > everyone to provide input, etc. > > > > -sam > > > > On May 28, 2009, at 5:10 PM, David Bonnie wrote: > > > >> Everyone - > >> > >> Nick and I are working at LANL this summer and one of our projects > >> involves modifying PVFS2 to use separate storage paths for metadata > versus > >> file data on a single PVFS2 server. The goal is to be able to place the > >> metadata database files on faster drives (SSDs, RAM drives, etc) to > speed up > >> metadata operations while still being able to service data requests from > a > >> standard HDD. Does anyone forsee a problem with this being pushed into > the > >> main distribution once it is finished? > >> > >> Thanks, > >> > >> - Dave > >> _______________________________________________ > >> Pvfs2-developers mailing list > >> [email protected] > >> http://www.beowulf-underground.org/mailman/listinfo/pvfs2-developers > > > > _______________________________________________ > > Pvfs2-developers mailing list > > [email protected] > > http://www.beowulf-underground.org/mailman/listinfo/pvfs2-developers > > > > _______________________________________________ > Pvfs2-developers mailing list > [email protected] > http://www.beowulf-underground.org/mailman/listinfo/pvfs2-developers >
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