NFS server failed to decode RPC request.
I use nfs4 shared with kerberos authentication.
Sometimes the following message appears in the server's logfile:
nfssrv: [ID 474727 kern.notice] NOTICE: Failed to decode arguments for NFS version 4 procedure RFS4_COMPOUND client 192.168.100.10
In addition I get RPC decoding errors ("xdrcall") if I run the nfsstat command.
On the client side I oberserve at the same time that the nfs server is not responding for a while (The clients waits for an answer of a request).
The client is a linux machine which mounts the nfs shares with version 4.0.
If that happens some shares become unaccessible on the client for some users.