Benjamin: Thanks for the extra information. I have added it to our tracking system.
Becky -- Becky Ligon HPC Admin Staff PVFS/OrangeFS Developer Clemson University/Omnibond.com OrangeFS Support 864-650-4065 > On Wednesday, June 08, 2011 07:33:45 Benjamin Severs wrote: >> On Wednesday, June 08, 2011 06:21:45 AM Michael Moore wrote: >> > Hi Benjamin, >> > >> > I don't have a quick fix, I don't know if others have seen this kind >> of >> > issue before. I've created a ticket in Trac for it: >> > https://www.orangefs.org/trac/orangefs/ticket/34 >> > >> > I'm planning on just copying your setup to recreate the problem. >> Anything >> > special about the contents of the 10GB file or just urandom type data? >> > >> > Thanks for letting us know about this! >> > >> > Michael >> >> There was nothing special about the file. My file was just a repeating >> sequence of characters (ex. 200 'A's, followed by 200 'B's, and so on). >> >> - Benjamin Severs > > More information... > > I believe this issue is caused by some race condition among the directio > threads. From my testing, it appears that the corruption stops (or at > least > hasn't shown up in my testing) if I either switch to using the alt-aio > trove > method or if I reduce the number of directio threads to 1. > > Hope this is useful. > > -- > Benjamin Severs > _______________________________________________ > 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
