On Fri, 23 Jun 2000, Jamie Lokier wrote:
> Tigran Aivazian wrote:
> > Then you come up with an idea of implementing a special
> > filesystem 'nullfs' where you shift the open file to, instead of closing
> > it. Any subsequent io on this fd gives EIO.
>
> Nice, because you still have the path from the dentry. So you might be
> able to forcibly unmount a filesystem (e.g. on a broken network file
> server) moving everything to nullfs. And then you might be able to
> mount a different fs in its place and use the paths from the dentries to
> convert the nullfs references back into real file references.
hmmm, interesting - I was originally thinking of releasing the old path as
"no longer useful" and allocating a new one that would point to nullfs
inode.
>
> Just a thought, I'm not sure if it has any application.
>
I will think about it. Thank you.
Regards,
Tigran
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