[Samba] File locks are not preserved when IP is moved to another node.

[Volker Lendecke]

On Mon, Jul 18, 2016 at 02:02:46PM +0200, Krzysztof Sienkiewicz wrote:
> Recently I was testing samba and ctdb with the glusterfs. Everything works
> well but I got some problems with file locking. When I exclusively lock a
> file from one Windows client the second client sees that this file is in
> use and doesn't allow access - this is correct. But when I move public IP
> to the second node these locks are lost and it is possible to access the
> file on the second client machine.
> 
> There are two servers in cluster, both are connected to domain and running
> ctdb, samba and winbind. Share is placed on the glusterfs and it is
> accessible on both nodes. I use two Windows clients to connects to this
> share. The samba version used is 4.4.3.

What you need is persistent file handles, which are right now not
present in Samba, sorry for that.

With best regards,

Volker Lendecke