how was the directory mounted when the client machine hung?
did you try the --persistent flag? It approximates your suggestion
#2.
The difficulty with the suggestion, though, is how to handle the
authentication when re-establishing the connection. The --persistent
flag handles this by only doing non-terminal-based authentication
(ssh-agent, a passwordless ~/.ssh/id_rsa, etc). Of course, if the
agent goes away (or the key file disappears), you are faced with the
same concern.
--dkg
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