6-STABLE TCP nfs Linux client hangs (UPDATE)

Sean McNeil sean at mcneil.com
Fri Nov 11 15:39:26 PST 2005


On Fri, 2005-11-11 at 11:24 -0800, Sean McNeil wrote:
> I have a 2x Athlon running with amd64 kernel and I can hang 2 Linux
> clients by attempting to write large amounts of data over TCP nfs.  If I
> set the nfsd to be UDP only, the problem never occurs.
> 
> Please let me know what I can do to help track this problem down.

It appears that the above isn't the case.  I managed to get a failure of
nfs in UDP mode as well.  I got some messages about jumbo frames that
didn't make sense coming from the NIC when that happened and some
corruption of files.  I believe there is an issue with mpsafe on the sk0
nic.

Turning off debug.mpsafenet (i.e. setting to 0) seems to have resolved
the issue for me at the moment.

Sean




More information about the freebsd-stable mailing list