Jim: There are some bugs with the 2.8.6 version. I suggest using 2.8.7 to test the user library stuff. I will also have the developer of the user library contact you and help you through your issues.
Becky On Wed, Jan 23, 2013 at 12:39 PM, Jim Kusznir <[email protected]> wrote: > Hi all: > > I'm also experimenting with LD_PRELOADing the user space shared library to > bypass the kernel module. I have a cluster in which usage of pvfs on this > cluster is conditional on NOT requiring any kernel modules or kernel > modifications. Besides, from what I understand, I should see higher > performance. > > So far, my tests have been "interesting". I'm not sure I've got the > correct library either, though. The docs at > http://www.omnibond.com/orangefs/docs/v_2_8_6/index.htm have been > helpful, but not quite addressed all my questions. > > So, with LD_PRELOAD set to /opt/pvfs2/lib/libofs.so, I can run ls and cp, > and it appears to work, even on one system without the kernel module loaded. > > However, other commands accessing non-pvfs structures appear to fail. For > example, I can't pull up cp's man page. On the only test where I cp'ed a > file to my local disk, the IO rate was in line with what I would expect for > my local disk's max throughput, but in the end, the resulting file was 0 > byes (original was 10GB). > > Am I doing something wrong? These tests were performed with OrangeFS > 2.8.6 client, 2.8.5 server. > > Thanks! > --Jim > > _______________________________________________ > 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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