Megatest

	 (tmpdir       (conc "/tmp/"(current-user-name)))
	 (tmpdb        (let* ((fname (conc tmpdir"/" (string-translate areapath "/" ".")"-"(current-process-id)"-"dbfname)))
			 (if (not (file-exists? tmpdir))(create-directory tmpdir))
			 ;; check if tmpdb already exists, either delete it or
			 ;; add something to the name
			 fname))
	 (inmem        (dbmod:open-inmem-db init-proc
					    ;; (if (eq? (dbfile:cache-method) 'inmem)
					    ;; 	#f
					    tmpdb
					    ;; )
					    ))
	 (write-access (file-write-access? dbpath))
	 (db           (dbmod:safely-open-db dbfullname init-proc write-access))
	 (tables       (db:sync-all-tables-list keys)))
    (if (not (and (sqlite3:database? inmem)
		  (sqlite3:database? db)))
	(begin
	  (debug:print 0 *default-log-port* "ERROR: Failed to properly open "dbfname-in", exiting immediately.")

	  (exit)))    ;; (assert (sqlite3:database? inmem) "FATAL: open-dbmoddb: inmem is not a db")
    ;; (assert (sqlite3:database? db) "FATAL:  open-dbmoddb: db is not a db")
    (dbr:dbstruct-inmem-set!     dbstruct inmem)
    (dbr:dbstruct-ondiskdb-set!  dbstruct db)
    (dbr:dbstruct-dbfile-set!    dbstruct dbfullname)
    (dbr:dbstruct-dbfname-set!   dbstruct dbfname)
    (dbr:dbstruct-sync-proc-set! dbstruct
				 (lambda (last-update)
				   (if *sync-in-progress*
				       (debug:print 3 *default-log-port* "WARNING: overlapping calls to sync to disk")
				       (let* ((sync-cmd (conc "megatest -db2db -from "tmpdb" -to "dbfullname)))
					 (mutex-lock! *db-with-db-mutex*) ;; this mutex is used when overloaded or during a query that modifies the db
					 (set! *sync-in-progress* #t)
					 ;; (if (eq? (dbfile:cache-method) 'inmem)
					 ;;     (dbmod:sync-gasket tables last-update inmem db
					 ;; 			dbfullname syncdir keys)
					 (thread-start! (make-thread
							 (lambda ()
							   (debug:print-info "Running "sync-cmd)
							   (system sync-cmd))))
					 (mutex-unlock! *db-with-db-mutex*)
					 (thread-sleep! 0.5) ;; ensure at least 1/2 second down time between sync calls
					 (set! *sync-in-progress* #f)))))
    ;; (dbmod:sync-tables tables #f db inmem)
    ;; (if db
    (dbmod:sync-gasket tables #f inmem db dbfullname 'fromdest keys) ;; ) ;; load into inmem
    (dbr:dbstruct-last-update-set! dbstruct (current-seconds)) ;; should this be offset back in time by one second?
    dbstruct))

;;    (if (eq? syncdir 'todisk) ;; sync to disk normally, sync from in dashboard
;;        (dbmod:sync-tables tables last-update inmem db)
;;        (dbmod:sync-tables tables last-update db inmem))))

;; direction: 'fromdest 'todest
;;
(define (dbmod:sync-gasket tables last-update inmem dbh dbfname direction keys)
  (assert (sqlite3:database? inmem) "FATAL: sync-gasket: inmem is not a db")
  (assert (sqlite3:database? inmem) "FATAL: sync-gasket: dbh is not a db")
  (debug:print-info 0 *default-log-port* "dbmod:sync-gasket called with sync-method="(dbfile:sync-method))
  (case (dbfile:sync-method)
    ((none) #f)
    ((attach)
     (dbmod:attach-sync tables inmem dbfname direction))
    ((newsync)
     (dbmod:new-sync tables inmem dbh dbfname direction))
    (else

;; direction = fromdest, todest
;; mode = 'full, 'incr
;;
;; Idea: youngest in dest is last_update time
;;
(define (dbmod:new-sync tables dbh1 dbh2 destdbfile direction #!key
			   (mode 'full))
  (debug:print 0 *default-log-port* "Doing new-sync "direction" "destdbfile)
  (if (not (sqlite3:auto-committing? dbh1))
      (debug:print 0 *default-log-port* "Skipping sync due to transaction in flight.")
      (let* ((table-names  (map car tables))
	     (dest-exists  (file-exists? destdbfile)))
	(assert dest-exists "FATAL: sync called with non-existant file, "destdbfile)
	(for-each
	 (lambda (table)