On 4/20/2017 00:15, Florian Fainelli wrote:
On 04/19/2017 01:52 AM, Neftin, Sasha wrote:
On 4/18/2017 22:05, Florian Fainelli wrote:
On 04/18/2017 12:03 PM, Eric Dumazet wrote:
On Tue, 2017-04-18 at 11:18 -0700, Florian Fainelli wrote:
Hi,
I am using NFS over a NAT with two e1000e adapters and with eth1 being
the LAN interface and eth0 the WAN interface. The kernel is Ubuntu's
16.10 kernel: 4.8.0-46-generic. The device doing NAT over NFS is just
mounting a remote folder and doing normal execution/file accesses. It's
enough to untar a file from this device onto a NFS share to expose the
problem.
The transmit hangs look like the ones below, doing a rmmod/insmod does
not help eliminated the problem, nor does a power cycle. Stopping the
NFS over NAT definitively does let the adapter recover.
Is this NFS over TCP or UDP ?
This is NFS over TCP mounted with the following:
type nfs
(rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,port=2049,timeo=70,retrans=3,sec=sys,local_lock=none,addr=X.X.X.X)
Thanks Eric!
Please, try disable TCP segmentation offload: ethtool -K <adapter> tso off.
I am not able to reproduce the hangs with TSO turned off. Is there a
specific patch you would want me to try?
Please, work with TSO turned off so. There is no patch for this specific
problem.
