I have just started mnesia with disc_copies schema on two nodes and
created two set tables (also disc_copies on the two nodes), cfg and
state, each with fields named "key" and "value".
tv shows the two tables, but although the record count is updated
properly in the Table Size column for the first table, it is always
displayed as zero for the second. I can write and read records ok with
either table, from tv and from an erl shell.