I am running a lot of openvz container in server. Now I have a lot of performance issue, and I think they come from I/O since munin graph show a lot of I/O activiy.
Server is proxmox, and it was recently upgraded (this could be the problem also) But near upgrade to last version of proxmox I added a gateway in a container running shorewall.
But now is almost impossible to log in the server, rebooting makes the system usuable but after two or tree hours I/O problems come again.
There isnt too much network activiy (10kb/s) it's a home "test" server.
Any other idea in order to detect the problem? openvz container asgateway is not a good idea?