rpc-srv/tcp: nfsd: sent ... when sending ... bytes - shutting down socket

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mad_ady
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rpc-srv/tcp: nfsd: sent ... when sending ... bytes - shutting down socket

Post by mad_ady »

I'm experiencing a weird lock-up on my N1, running kernel 5.8...
It happens only occasionally, and only when streaming data over NFS (2-3Mbps tx from the N2). Usually when streaming data over long periods of time (watching a movie). The dmesg message I get (logged over netconsole, which still works) is:

Code: Select all

Feb 21 20:23:42 aldebaran.lan  [1089023.107839] rpc-srv/tcp: nfsd: sent 95568 when sending 524416 bytes - shutting down socket
Feb 21 20:23:42 aldebaran.lan  [1089023.113636] rpc-srv/tcp: nfsd: sent 101360 when sending 524416 bytes - shutting down socket
Apparently networking locks up, (ssh is not reachable anymore), though some protocols might still work (icmp/udp). I haven't done a full analysis of what works in this state and was forced to reboot.

The funny thing is - this lock-up happened to me twice in the past month, though never before on the same N1, running the same kernel for about 6 months...
I've searched the forums, and others had similar issues that were solved at the nic driver level:
https://www.spinics.net/lists/netdev/msg466375.html

Not sure if the nic on the N1 suffers from the same problem, but I wanted to ask the few N1 users around if you've ever seen this with your systems?

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Re: rpc-srv/tcp: nfsd: sent ... when sending ... bytes - shutting down socket

Post by meveric »

I'm not using NFS, normally only samba or something, currently I have a 500GB SSD connected to the N1, so normally I don't have the need to pull large data over the network, and once again, not using NFS.
Have you tried other methods than NFS to see if it's a general network issue or just NFS?
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mad_ady
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Re: rpc-srv/tcp: nfsd: sent ... when sending ... bytes - shutting down socket

Post by mad_ady »

No, I'm 90% using nfs... But I will think of some stress tests over samba as well...

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Re: rpc-srv/tcp: nfsd: sent ... when sending ... bytes - shutting down socket

Post by meveric »

you can stream video over samba as well, should be the same scenario.
Or just loop a copy command from samba to /dev/null.
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mad_ady
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Re: rpc-srv/tcp: nfsd: sent ... when sending ... bytes - shutting down socket

Post by mad_ady »

I think I need to throttle the throughput. I have the suspicion the problem happens at low, but sustained speeds...

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