Re: [fuse-devel] Proxmox + NFS w/ exported FUSE = EIO

[Miklos Szeredi <miklos@szeredi.hu>]

On Mon, 19 Feb 2024 at 20:55, Bernd Schubert <bernd.schubert@fastmail.fm> wrote:
>
>
>
> On 2/19/24 20:38, Miklos Szeredi wrote:
> > On Mon, 19 Feb 2024 at 20:05, Antonio SJ Musumeci <trapexit@spawn.link> wrote:
> >
> >> This is what I see from the kernel:
> >>
> >> lookup(nodeid=3, name=.);
> >> lookup(nodeid=3, name=..);
> >> lookup(nodeid=1, name=dir2);
> >> lookup(nodeid=1, name=..);
> >> forget(nodeid=3);
> >> forget(nodeid=1);
> >
> > This is really weird.  It's a kernel bug, no arguments, because kernel
> > should never send a forget against the root inode.   But that
> > lookup(nodeid=1, name=..); already looks bogus.
>
> Why exactly bogus?
>
> reconnect_path()
>                 if (IS_ROOT(dentry))
>                         parent = reconnect_one(mnt, dentry, nbuf);

It's only getting this far if (dentry->d_flags & DCACHE_DISCONNECTED),
but that doesn't make sense on the root dentry.  It does happen,
though, I'm just not seeing yet how.

Thanks,
Miklos