Hi,
Got a Fedora 25 Server using fairly default smb.conf, nothing special,
just to share some storage.
Three clients: macOS 10.12.4, Fedora 26, and Windows 10
On the server, using 'smbstatus' I see the following protocols used
for each client when connected:
Windows 10: SMB3_11
macOS: SMB3_02
Fedora 26: NT1
This is true whether I use smbclient or Nautilus to make the connection.
The smb.conf man page says for "client min protocol" and "client max protocol":
Normally this option should not be set as the automatic
negotiation phase in the SMB protocol takes care of choosing the
appropriate protocol.
If I do:
server min protocol = SMB2
server max protocol = SMB3
Windows and macOS can still connect however:
[chris@f26h ~]$ smbclient //10.0.0.3/brick1
protocol negotiation failed: NT_STATUS_INVALID_NETWORK_RESPONSE
If I comment out the above, and go with:
client min protocol = SMB2
client max protocol = SMB3
Both Nautilus and smblient connect with NT1 protocol.
If I use:
smbclient -m smb3 //10.0.0.3/brick1
I get SMB3_11 protocol connection. So the smbclint *can* do SMB3_11,
it just refuses to autonegotiate it, and even seems to ignore the
server's client and server min directive.
I'm not sure how to get Nautilus to use SMB3 or if it even supports
it, or if it's ultimately using smbclient behind the scene.
Anyway this is confusing. The performance difference is significant,
it's about 2.5x slower with NT1 compared to an SMB3_11 connection.
--
Chris Murphy
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