[Samba] status of Continuous availability in SMB3

[Jeremy Allison]

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.