tdb (all branches) has the behaviour that when opening an existing database, if you don't specify the right hash size, the open will fail with EIO.
This means for example that tdbtool can't open printing tdbs after jra's change to increase their has size to 5000. Wouldn't it be reasonable to ignore the hash_size parameter to tdb_open_ex when opening an existing tdb, and just use whatever is in the header? -- Martin
