samba - Sep 2016 - 答复: status of Continuous availability in SMB3

On Wed, Aug 31, 2016 at 10:29:51AM +0200, Michael Adam via samba
wrote:
> On 2016-08-31 at 08:13 +0000, zhengbin.08747 at h3c.com wrote:
> > When carring out the test, I have a wireshark process run. It is
confirmed that protocol smb3 is used. In the tree connection phase, server's
response to client claims that it does not support DFS/Continuous Availability.
> > I'm confused that does SMB3 protocol in samba 4.3.9 just been
partly implemented and CA is of one the feature unspported by this version of
samba. Or I have not found the way to enable the CA feature. Look forward to
your kind advice.
> 
> It is true that to date, CA is not implemented in Samba.
> The SMB2 and SMB3 protocols have a number of capabilities
> that are optional in the sense that the server tells the
> client whether it supports them or not.
> 
> Among those are:
> - persistent handles (corresponding to the share capability CA)
> - multi-channel
> - leases
> - directory leases
> - encryption
> - large MTU
> 
> Of these, samba currently supports leases, encryption,
> and large MTU. multi-channel support is experimental.
> persistent handles are being worked on.
NB. There is a patch we have for persistent handles
donated by a vendor which they're using in production
in their product. I'm trying to find the time
to get this integrated.

Where is the patch?I can help to get this integrated

-----邮件原件-----
发件人: Jeremy Allison [mailto:jra at samba.org]
发送时间: 2016年9月1日 7:57
收件人: Michael Adam
抄送: zhengbin 08747 (RD); weidong 12656 (RD); 'samba at lists.samba.org'
主题: Re: [Samba] status of Continuous availability in SMB3

On Wed, Aug 31, 2016 at 10:29:51AM +0200, Michael Adam via samba
wrote:
> On 2016-08-31 at 08:13 +0000, zhengbin.08747 at h3c.com wrote:
> > When carring out the test, I have a wireshark process run. It is
confirmed that protocol smb3 is used. In the tree connection phase, server's
response to client claims that it does not support DFS/Continuous Availability.
> > I'm confused that does SMB3 protocol in samba 4.3.9 just been
partly implemented and CA is of one the feature unspported by this version of
samba. Or I have not found the way to enable the CA feature. Look forward to
your kind advice.
>
> It is true that to date, CA is not implemented in Samba.
> The SMB2 and SMB3 protocols have a number of capabilities that are
> optional in the sense that the server tells the client whether it
> supports them or not.
>
> Among those are:
> - persistent handles (corresponding to the share capability CA)
> - multi-channel
> - leases
> - directory leases
> - encryption
> - large MTU
>
> Of these, samba currently supports leases, encryption, and large MTU.
> multi-channel support is experimental.
> persistent handles are being worked on.
NB. There is a patch we have for persistent handles donated by a vendor which
they're using in production in their product. I'm trying to find the
time to get this integrated.
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On Thu, Sep 01, 2016 at 01:02:21AM +0000, zhengbin.08747--- via samba
wrote:
> Where is the patch?I can help to get this integrated
So here is a "raw" copy of the patch generously provided to us by
Simplivity. I do want to thank them very much for this work !

I'm putting it out on the mailing list so as many people can
look at and maybe start working with it as possible (to try
and get it integrated).

It provides the frontend SMB support for these features, but
in order to get them into production we need to get the backend
support in place (actually make the handles persistent etc.).

Cheers,

	Jeremy.