Processes stuck in nfsreq

[Kris Kennaway]

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.
> 
> Can you force a core dump and send me a pointer to it ?
> 
> 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.

FYI, it looks like turning off mpsafenet indeed masks the bug.

Kris
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