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#!/usr/bin/guile -s
!#
;;; Copyright (C) 2007-2009 Gluster Inc. <http://www.gluster.com>
;;;
;;; This program is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 2 of the License, or
;;; (at your option) any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program; if not, write to the Free Software
;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
;;;
;;; This script lets you specify the xlator graph as a Scheme list
;;; and provides a function to generate the spec file for the graph.
(define (volume args)
(apply
(lambda (name type options)
(lambda args
(display "volume ") (display name) (newline)
(display " type ") (display type) (newline)
(map (lambda (key-value-cons)
(let ((key (car key-value-cons))
(value (cdr key-value-cons)))
(display " option ") (display key) (display " ")
(display value) (newline)))
options)
(if (> (length args) 0)
(begin
(display " subvolumes ")
(map (lambda (subvol)
(display subvol) (display " "))
args)
(newline)))
(display "end-volume") (newline) (newline)
name))
args))
;; define volumes with names/type/options and bind to a symbol
;; relate them seperately (see below)
;; more convinient to seperate volume definition and relation
(define wb (volume '(wb0
performance/write-behind
((aggregate-size . 0)
(flush-behind . off)
))))
(define ra (volume '(ra0
performance/read-ahead
((page-size . 128KB)
(page-count . 1)
))))
(define ioc (volume '(ioc0
performance/io-cache
((page-size . 128KB)
(cache-size . 64MB)
))))
(define iot (volume '(iot0
performance/io-threads
()
)))
(define client1 (volume '(client1
protocol/client
((transport-type . tcp/client)
(remote-host . localhost)
(remote-subvolume . brick1)
))))
(define client2 (volume '(client2
protocol/client
((transport-type . tcp/client)
(remote-host . localhost)
(remote-subvolume . brick2)
))))
(define unify (volume '(unify0
cluster/unify
((scheduler . rr)
))))
;; relate the symbols to output a spec file
;; note: relating with symbols lets you change volume name in one place
(wb (ra (ioc (iot (unify (client1)
(client2))))))
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