Megatest

;; 1. look though disks list for disk with most space
;; 2. create run dir on disk, path name is meaningful
;; 3. create link from run dir to megatest runs area 
;; 4. remotely run the test on allocated host
;;    - could be ssh to host from hosts table (update regularly with load)
;;    - could be netbatch
;;      (launch-test db (cadr status) test-conf))
(define (launch-test db run-id test-conf keyvallst test-name test-path itemdat)
  (change-directory *toppath*)
  (let ((useshell   (config-lookup *configdat* "jobtools"     "useshell"))
	(launcher   (config-lookup *configdat* "jobtools"     "launcher"))
	(runscript  (config-lookup test-conf   "setup"        "runscript"))
	(ezsteps    (> (length (hash-table-ref/default test-conf "ezsteps" '())) 0)) ;; don't send all the steps, could be big
	(diskspace  (config-lookup test-conf   "requirements" "diskspace"))
	(memory     (config-lookup test-conf   "requirements" "memory"))

						   (list 'test-name test-name) 
						   (list 'runscript runscript) 
						   (list 'run-id    run-id   )
						   (list 'itemdat   itemdat  )
						   (list 'megatest  remote-megatest)
						   (list 'ezsteps   ezsteps)
						   (list 'env-ovrd  (hash-table-ref/default *configdat* "env-override" '()))
						   (list 'runname   (args:get-arg ":runname"))
						   (list 'mt-bindir-path mt-bindir-path))))))) ;; (string-intersperse keyvallst " "))))
    ;; clean out step records from previous run if they exist
    (db:delete-test-step-records db run-id test-name itemdat)
    (change-directory work-area) ;; so that log files from the launch process don't clutter the test dir
    (cond
     ((and launcher hosts) ;; must be using ssh hostname
      (set! fullcmd (append launcher (car hosts)(list remote-megatest test-sig "-execute" cmdparms))))

    (let* ((commonprevvals (alist->env-vars
			    (hash-table-ref/default *configdat* "env-override" '())))
	   (testprevvals   (alist->env-vars
			    (hash-table-ref/default test-conf "pre-launch-env-overrides" '())))
	   (miscprevvals   (alist->env-vars ;; consolidate this code with the code in megatest.scm for "-execute"
			    (append (list (list "MT_TEST_NAME" test-name)
					  (list "MT_ITEM_INFO" (conc itemdat)) 
					  (list "MT_RUNNAME"   (args:get-arg ":runname")))
				    itemdat)))
	   (launch-results (apply cmd-run-proc-each-line
				  (if useshell
				      (string-intersperse fullcmd " ")
				      (car fullcmd))
				  print
				  (if useshell