[Samba] Missing Files/Missing Folders from an NFS Share

[Jeremy Allison]

On Mon, Feb 27, 2023 at 01:18:20PM +0100, Conor Armstrong via samba wrote:
>Just by way of update on this, it looks like the problem exists with the
>ReadDir, TellDir and SeekDir implementation on NFS shares.  In my case it
>was an AWS EFS share that uses NFS.

Can you elaborate exactly the issue with the AWS NFS server here ?
It would be really helpful to understand what it's doing here.

>The fix in the samba code isn't straightforward.  As a workaround on my
>case I discovered that if I mount the NFS share at say /mnt/mountpoint1 and
>the use sshfs to connect back into the same machine and mount at
>/mnt/mountpoint2 the /mnt/mountpoint1 directory I can then share the
>/mnt/mountpoint2 share with Samba and the sshfs layer that sits between
>Samba and the NFS mount seems to correct the issues that are present if t
>the mounted NFS share were shared with Samba directly.
>
>So instead of
>
>NFS -> /mnt/mountpoint1 and /mnt/mountpoint1 -> Samba -> Windows Client
>
>I use
>
>NFS -> /mnt/mountpoint1 and /mnt/mountpoint1 -> /mnt/mountpoint2 (via
>sshfs) and /mnt/mountpoint2 -> Samba -> Windows Client
>
>There is a performance hit in doing this, but it is something I can live
>with.

I'm glad you found a fix, but if we can understand what is wrong
with AWS NFS here we might be able to do something more performant
in Samba.