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Guest
Posted: Fri Aug 28, 2009 11:55 am Reply with quote
Guest
Hi! I have a distributed mnesia application that have to create new
tables during it's work.
I want to keep all tables replicated on all mnesia nodes in my
cluster.
What if the table has been created at the moment when some of the
cluster nodes were down? Is there a standard solution to make full
database replication across the several nodes?

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Guest
Posted: Sat Aug 29, 2009 10:01 am Reply with quote
Guest
Got it. Thanks for your answers everyone. Wink

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Guest
Posted: Sat Aug 29, 2009 11:44 am Reply with quote
Guest
Here is what I got:

start_replica(Master_node) when is_atom(Master_node) ->
ok = mnesia:start(),

case mnesia:change_config(extra_db_nodes, [Master_node]) of
{ok, _} -> ok;
{error, E} -> erlang:error({change_config_failed, E})
end,

mnesia:change_table_copy_type(schema, node(), disc_copies),

Tables = mnesia:system_info(tables),
Table_types = [ {T, mnesia:table_info(T, where_to_commit)} || T <-
Tables ],

[ {T, mnesia:add_table_copy(T, node(), Type) } || {T, [_, Type]} <-
Table_types ].


Does this look reasonable or have I done something wrong?

Thanks in advance.

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