> >> > This is needed to be able to correctly implement open-unlink-fsetattr
> >> > semantics in some filesystem such as sshfs, without having to resort
> >> > to "silly-renaming".
> >>
> >> How do you plan to do that?
> >
> > Easy: the SFTP protocol has stateful opens and defines an FSTAT call.
>
> Is it possible to reconnect without umounting?
Yes, but open files and in-progress requests are lost at reconnect.
> If yes, the unlinked files would be lost in spite of being opened,
> wouldn't they?
Sure. Obviously one of the drawbacks of a stateful protocol is that
the server state can't survive a reconnect.
But that sort of reliability has never been the goal of sshfs. And
even if that was needed, it could probably be much better handled in a
lower layer.
Miklos
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