How can I prioritize LVM volumes I/O performance using cgroups?
I know I can use ionice to make changes at the process level but I wish to be able to do this per LV and not per process.
I'm trying to figure out why wake on lan frames, in the simplest form, are designeted to the ethernet broadcast address (FF:FF:FF:FF:FF:FF) and not to the address of the machine to be powered on.
Does it has to do with the network switch internal table that assings a mac address to ports?
I'm working on a software appliance based on linux platform. I want to have a secured way of reaching every installed appliance over the Internet for remote debugging and support. In order to traverse NAT and to be able to simply connect to the appliance I was thinking about OpenVPN as a solution. Problem is that I can't ship a single certificate with the appliance image and have all everyone connected with it since openvpn will not allow more than one session per certificate.
Another issue is isolation between the VPN clients so that one client won't be able to connect to the other. how can that be achieved. Thanks