I'm trying to change an lxc container size in new proxmox 4 on debian jessie. But there is no checkbox (which was in openvz containers) for changing a size from proxmox interface. Changing a size in lxc container configuration file and restarting the services won't help. Backing up a container and then restoring it doesn't give an option of changing a size as well.
According to proxmox forum, you can do this with command line :
pct resize <vmid> <disk> <size> [OPTIONS]
where disk
is usually rootfs
and size
can use suffixes like 500G
. More details in the help: pct help resize