On Wed, 26 Apr 2006, Francesco Pasqualini wrote: > what is the correct way to update a dbm (Berkley db usually) lookup db while > exim is running?
Make a new file, and move it into place using "mv". > I will use the perl interface to DB_File, do I need to aquire a lock or > something else to assure that exim4 does not read incorrect information > while updating the db ? As Exim is only reading these files in lookups, it doesn't use any locking. > Is it safe to rebuild a db with the exim_dbmbuild utility ? Yes, because exim_dbmbuild makes a new file and then renames it. > What appen if exim do a lookup while the utility is running ? It should be OK, because the operating system should ensure integrity for a rename operation. Either it will see the old file, or it will see the new one. -- Philip Hazel University of Cambridge Computing Service Get the Exim 4 book: http://www.uit.co.uk/exim-book -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
