We have server A serving files to users on a network via samba. It's running out of space, so we decided to mount an NFS share (server B) onto server A, under our previously shared samba share.
It all works well when both servers are up and running. However, if server B goes offline, server A gets reeeeeeeeaallly slow (~30s to open a folder, that should be unrelated to Server B's mount).
What's going on?