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I would like to enable SMB2 on a FAS 2050 running Data ONTAP 7.3.2 as by default it is disabled.

I have discovered that to enable SMB2 the following option must be set:

options cifs.smb2.enable on

Does this require a restart of cifs to take affect or just does it start working magically? Also will this change persist across a reboot?

Update: As per James post below the following setting allows the filer to use SMB2 when talking to other servers.

options cifs.smb2.client.enable on
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2 Answers

up vote 2 down vote accepted

Check na_options.

http://filer/na_admin/man/man1/na_options.1.html

cifs.smb2.enable This option enables SMB 2.0 support on the Filer. When this option is enabled, the Filer uses SMB 2.0 with a Windows client, if the client supports SMB 2.0. When this option is disabled, the Filer will not accept any new SMB 2.0 sessions; existing sessions are not terminated.

Default: off

Effective: Immediately

Persistence: Remains in effect across system reboots

cifs.smb2.client.enable This option enables SMB 2.0 client capability on the Filer. When this option is enabled, Filer-initiated connections to Windows servers use the SMB 2.0 protocol. If the Windows server does not support the SMB 2.0 protocol, the Filer uses SMB 1.0. If a session was established over SMB 2.0 and then this option is disabled, existing sessions are not terminated. The Filer continues to use SMB 2.0 for the existing sessions; new sessions do not use SMB 2.0.

Default: off

Effective: Immediately

Persistence: Remains in effect across system reboots

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We enabled SMB2 today, and 'CIFS stat' gives me some information. Is there an easy way to see which sessions that uses SMB2, or other ways to track this?

-PAE

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Try the command "cifs sessions -p smb2" From backdrift.org/man/netapp/man1/na_cifs_sessions.1.html "The -p option filters sessions based on the version of the SMB protocol used. When the -p option is used with smb' as the argument, only SMB 1.0 sessions are displayed. When the -p option is used with smb2' as the argument, only SMB 2.0 sessions are displayed. When the -p option is not used, both SMB 1.0 and SMB 2.0 sessions are displayed. The -p option can be used along with -c and -s options." – Sim Jan 11 '11 at 21:20
You should really ask this as a question in its own right. – Sim Jan 11 '11 at 21:24
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