On Thu, Feb 03, 2005 at 10:29:16AM -0800, Mohan Srinivasan wrote: > Hi, > > In the info you have below, the NFS request was not sent (R_SENT > is not set). We didn't send out the request because possibly nm_cwnd > didn't allow us to send the request. If nfs_request() could not send > the request, then typically, the request would be retransmitted from > nfs_timer(). > > If nm_cwnd is full, then there must be a lot of outstanding requests > that haven't been replied to yet (on this mount), which is the fundamental > issue. FYI, this is truly hung and not just backlogged - it hasn't proceeded any further since last night. > Can you force a core dump and send me a pointer to it ? Unfortunately not, because twed dumping is still broken. The only way I was able to obtain this information is because kan has patches that fix kgdb enough to use it on the running kernel. > Also, after you force a core, can you also try a quick workaround - someone > else also reported NFS client hangs and said that things were fine > after they set mpsafenet to 0. It would be good to see if there's a > correlation there. I can try that. Kris
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