On Jun 29, 2021, at 2:32 PM, bfields@fieldses.org wrote:

On Tue, Jun 29, 2021 at 11:43:45AM +1000, NeilBrown wrote:

quoted

I wonder how important this is.  If an NFS client unlinks a file that it
has open, it will be silly_renamed, and if the client then goes silent,
it might never be removed.  So we already theoretically have a
possibilty of ENOSPC due to silent clients.  Have we heard of this
becoming a problem?

Oh, that's a good point.  I've seen complaints about sillyrename files,
but I can't recall ever seen a single complaint about their causing
ENOSPC.

quoted

Is there reason to think that the Courteous server changes will make
this problem more likely? 

So I guess the only new cases the courteous server will introduce are
even less likely (probably just the case where a file is unlinked by a
client other than the one that has it open).

So I think doing nothing for now is an acceptable alternative....

I'm comfortable with that too. We can keep a careful eye on this
as the courteous server moves further along.

--
Chuck Lever