[Samba] Confused about ctdb options: dbdir and dbdir-persistent

[Martin Schwenke]

On Wed, 14 Sep 2016 10:21:39 +0000, Weidong via samba
<samba at lists.samba.org> wrote:

> http://linux.die.net/man/1/ctdbd. In this page, it says “This
> directory is local for each node and should not be stored on the
> shared cluster filesystem”. But why?  Thanks for reply.

I believe that the answer is performance.  This is mentioned here:

  https://wiki.samba.org/index.php/Clustered_Samba#Clustered_Samba_Prototypes

Instead, CTDB manages record distribution and replication between local
databases stored on each node.  For most SMB workloads it does this
very efficiently.

peace & happiness,
martin