[PATCH] Clean up tdb flags calculation in CTDB

[Martin Schwenke]

On Mon, 26 Jun 2017 11:58:42 +1000, Amitay Isaacs via samba-technical
<samba-technical at lists.samba.org> wrote:

> CTDB's database attach controls were designed to pass the tdb open flags.
> It means that clients (including samba) have to calculate the tdb flags
> before opening to a clustered database exactly the same way as calculated
> by ctdb daemon.  This is counter-intuitive and prone to errors specially
> when robust mutexes are involved.  Once a clustered database is opened, all
> the clients have to match the flags to attach to that clustered database.
> 
> This patch set cleans up database code in ctdb daemon and refactors the
> logic to calculate tdb open flags in one place.  For clients to know the
> correct tdb flags to use while opening the database locally, a new control
> is added which returns tdb_flags.  This avoids the need to pass any
> tdb_flags with DB_ATTACH controls and hence the flags are now ignored.
> 
> Please review and push.

Reviewed-by: Martin Schwenke <martin at meltin.net>

Ralph, does this meet your expectations?  :-)

peace & happiness,
martin