pgcalc.py

    #!/usr/bin/env python
    
    import math
    import sys
    
    
    if __name__ == '__main__':
        if len(sys.argv) != 2:
            print "usage: %s <osd amount>" % sys.argv[0]
        osd_num = int(sys.argv[1])
        power = int(math.log(osd_num * 100, 2)+0.99)
        total_pgs = 2**power
    
        print "images pool: ", total_pgs/16
        print "vms pool: ", total_pgs/2
        print "volumes pool: ", total_pgs/2