Hello, I offer my intrest and assistance, but I am very unreliable regarding deadlines and promised work. Still, have been fixing it up for ourselves for quite a long time now, so I may do it in a shared repo as well. Also fiddled with v4 for a while but didn't finsh it; I'll check the offered URL. V4 would be pretty big improvement ofer v3 due to dropped hardlinking, which defeats all tries to rsync the backend pool beyond a given size. Peter