nfs timeouts after rebooting a machine

Issue

• After rebooting the NFS client, there are timeouts when accessing a remote nfs share.
  We can reproduce the issue by simply trying a writing loop gives us the following error, after a while:

Input/output error

The share is mounted as:

mount -t nfs -o rw,soft,intr,rsize=32768,wsize=32768,tcp,timeo=1,retrans=1 nfsserver:/data/test/test1 /mnt/