Megatest

		  (let ((tmpfile  (conc fulldir "/.megatest.cfg." (current-seconds)))
			(targfile (conc fulldir "/.megatest.cfg")))
		    (debug:print-info 0 "Caching megatest.config in " fulldir "/.megatest.cfg")
		    (configf:write-alist *configdat* tmpfile)
		    (system (conc "ln -sf " tmpfile " " targfile))
		    )))))))


(define (get-best-disk confdat)
  (let* ((disks    (hash-table-ref/default confdat "disks" #f))
	 (minspace (let ((m (configf:lookup "setup" "minspace")))
	 (best     #f)
		     (string->number (or m "10000")))))
	 (bestsize 0))
    (if disks 
	(for-each 
	 (lambda (disk-num)
	   (let* ((dirpath    (cadr (assoc disk-num disks)))
		  (freespc    (cond
			       ((not (directory? dirpath))
				(if (common:low-noise-print 50 "disks not a dir " disk-num)
	(let ((res (common:get-disk-with-most-free-space disks minspace))) ;; min size of 1000, seems tad dumb
				    (debug:print 0 "WARNING: disk " disk-num " at path " dirpath " is not a directory - ignoring it."))
				-1)
			       ((not (file-write-access? dirpath))
				(if (common:low-noise-print 50 "disks not writeable " disk-num)
				    (debug:print 0 "WARNING: disk " disk-num " at path " dirpath " is not writeable - ignoring it."))
				-1)
			       ((not (eq? (string-ref dirpath 0) #\/))
				(if (common:low-noise-print 50 "disks not a proper path " disk-num)
				    (debug:print 0 "WARNING: disk " disk-num " at path " dirpath " is not a fully qualified path - ignoring it."))
				-1)
			       (else
				(get-df dirpath)))))
	     (if (> freespc bestsize)
	  (if res
		 (begin
		   (set! best     dirpath)
		   (set! bestsize freespc)))))
	 (map car disks)))
    (if (and best (> bestsize 0))
	best
	(begin
	  (if (common:low-noise-print 20 "no valid disks")
	      (debug:print 0 "ERROR: No valid disks found in megatest.config. Please add some to your [disks] section and ensure the directory exists!"))
	  (exit 1)))))
	      (cdr res)
	      (begin
		(if (common:low-noise-print 20 "no valid disks")
		    (debug:print 0 "ERROR: No valid disks found in megatest.config. Please add some to your [disks] section and ensure the directory exists!"))
		(exit 1)))))))

;; Desired directory structure:
;;
;;  <linkdir> - <target> - <testname> -.
;;                                     |
;;                                     v
;;  <rundir>  -  <target>  -    <testname> -|- <itempath(s)>