[Samba] fruit:copyfile not working as expected

[Mike Pastore]

Hi Alexander,

Fortunately, we don't have that problem, so I suppose I should be grateful!

I have Samba configured with:

   vfs objects = catia fruit streams_xattr
   fruit:aapl = yes
   fruit:copyfile = yes
   fruit:delete_empty_adfiles = yes
   fruit:encoding = native
   fruit:locking = none
   fruit:metadata = stream
   fruit:nfs_aces = no
   fruit:resource = xattr
   fruit:wipe_intentionally_left_blank_rfork = yes

We lean heavily on xattrs because ZFS on Linux configured with xattr=sa is
very fast, especially with a low-latency special vdev for metadata.

Thank you,

Mike

On Thu, Mar 2, 2023 at 1:35 AM Alexander Harm || ApfelQ <
alexander.harm at apfelq.com> wrote:

> Hello Mike,
>
> I know from my customers that moving files under macOS Ventura on a SMB
> share is a mess and completely broken by Apple (e. g. moved files cannot be
> opened until you reconnect). Unfortunately I do not have a ZFS-backed
> machine to test against available right now to confirm the behaviour. Is
> your order of "vfs objects” correct?
>
> Regards, Alexander
>
>
> On Thursday, Mar 02, 2023 at 4:34 AM, Mike Pastore via samba <
> samba at lists.samba.org> wrote:
> Hi folks,
>
> I have a number of Mac users connecting to our Samba fileserver over VPN.
> When they copy/move files between shares it takes quite a long time due to
> our miserable business internet connection. I set fruit:copyfile = yes in
> smb.conf expecting that to enable server-side copy for Mac users.
> Unfortunately, it did not.
>
> Befuddled, I tried the same copy operation from a Windows VM and it worked
> great. Very little network traffic, direct disk-to-disk copy on the server.
> So the server itself is configured correctly, the backing filesystem (ZFS)
> is configured correctly, etc. The problem must lie between vfs_fruit and
> macOS nsmb.
>
> I've upgraded Samba to 4.17.5 and tried toggling various other vfs_fruit
> options to see if one of them is conflicting with the copyfile option. No
> quick fixes, I'm afraid. Hopefully somewhere here can point me in the right
> direction—or at least confirm this behavior on Samba 4.16 or newer and
> macOS Big Sur or Ventura.
>
> Thank you in advance!
>
> Mike
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