[CentOS] NFS help

[Gordon Messmer]

On 10/26/2016 09:54 PM, Larry Martell wrote:
> And on the C6 client there is a similar blocked message for the ftp
> job, blocked on nfs_flush, then the bad sequence number message I had
> seen before, and at that point the ftp_job hung.


Are any of these systems using jumbo frames?  Check the MTU in the 
output of "ip link show" on every system, server and client. If any 
device doesn't match the MTU of all of the others, that might cause the 
problem you're describing.  And if they all match, but they're larger 
than 1500, a switch that doesn't support jumbo frames would also cause 
the problem you're describing.