On Wed, Feb 15, 2006 at 05:38:56PM -0500, Andrew Pochinsky wrote: > Here's pvfs2-statfs output. There is, of course, a chance of a hardware > problem, but the fact that pvfs2-cp works ten times faster than cp > suggests otherwise, in my opinion. I have rebooted both servers and the > client, and after about 15 hours I again see Badness... messages in > dmesg and the system log. There is nothing new in the pvfs2 client log > file.
Ok, good. sorry, i misread the part where you explained everything is running just fine through the system interface. That's good news. And things run well for a while, meaning the servers, clients, and kernel interface things are all configured correctly. Then everything goes badly after 15 hours. When PVFS2 gets into this bad state, is there any way to recover? You could try 1: unmounting and remounting the file system; 2: killing pvfs2-client-core (relying on pvfs2-client to restart it); 3: removing the kernel module (after unmounting and stopping pvfs2-client) and then reloading it. All that will do is narrow down where the wierd state lies. If you do all three things above and pvfs2 still performs slowly through the VFS, then I'll have to think some more about what's going on. Do other pvfs2 clients have this performance problem or is it isolated to one client? Can you tell me more about the workload you are using? Is most of the activity coming from the login nodes or the compute nodes? Thanks ==rob -- Rob Latham Mathematics and Computer Science Division A215 0178 EA2D B059 8CDF Argonne National Labs, IL USA B29D F333 664A 4280 315B _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
