[sshfs] Sshfs automatic reconnect and open files

[Florian E. <fl...@or...>]

Hi,

I've just come across a "problem" I encounter with sshfs and using the "-o
reconnect" option. The reconnect does work fine, however all open files on
the mountpoint are closed when ssh is disconnected and an error is returned
to the application opening the files. After the reconnect the files
(must/can) be reopened again.

Now, this behaviour makes sense on the one hand to ensure data integrity
(the files might have changed on the server during the disconnect).

However, I'm using sshfs to mount a single large truecrypt container on a
remote machine. Obviously the disconnect and closing of open files brakes
the truecrypt mount and can potentially corrupt the filesystem in the
mounted container.

My question now:  Is it somehow possible/feasible to add a
"blocking/no-close" option to keep all currently open files open during a
reconnect and have all i/o operations on these files block until we are
reconnected.
Data integrity is no problem in my use case, as I'm the only person
acessing the remote truecrypt container, so nothing will have changed after
the reboot  (and of course these problems and potential dangers could be
documented alongside this option).

I would also be willing to help developing this option, if I could get some
help from someone with a good understanding of the sshfs code where to look
in the code or how such a thing might potentially be implemented.

Thanks,
Florian.