Docker container using the mounted nfs storage breaks the storage mount making the mount point not accessible, doing a ls/df on the mounted storage hangs the Server and a Control C is the only way to exit. I will also have to shutdown Docker services then do a system reboot to be able to access the mount point again. The same container has been running for the last 18 months using the same mount point with no issues until 2 weeks ago. The same mount point is accessible from an identical server with no issues at all.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Docker version 19.03.15, build 99e3ed8919
Steps to reproduce
sudo systemctl start docker and the a df/ls on the mount point hangs the system.