[ovs-discuss] vswitch deamon not running

[Hassan Samii]

The only openvswitch processes running are the following 2:
    root       1125  0.0  0.3  39716   6068  -  I<s  10:40AM  0:00.01 ovsdb-server:     monitoring pid 1126 (healthy) (ovsdb-server)
    root       1126  0.0  0.3  39716   6404  -  S<   10:40AM  0:00.66 ovsdb-server     -vconsole:emer -vsyslog:err -vfile:info --remo


So i presume that the ovs switch is not running, so i tryed to do the following command:     ovs-vswitchd --pidfile --detach
but i get the following error:

    2015-11-19T10:46:19Z|00001|reconnect|INFO|unix:/var/run/openvswitch/db.sock: connecting...
    2015-11-19T10:46:19Z|00002|reconnect|INFO|unix:/var/run/openvswitch/db.sock: connected
    2015-11-19T10:46:19Z|00003|netdev_bsd|WARN|opening "/dev/tap" failed: No such file or directory
    2015-11-19T10:46:19Z|00004|dpif|WARN|failed to create datapath ovs-netdev: No such file or directory
    2015-11-19T10:46:19Z|00005|ofproto_dpif|ERR|failed to open datapath of type netdev: No such file or     directory
    2015-11-19T10:46:19Z|00006|ofproto|ERR|failed to open datapath br0: No such file or directory
    2015-11-19T10:46:19Z|00007|bridge|ERR|failed to create bridge br0: No such file or directory

and now if i show the running processes there is also:    root       1315  0.0  0.3  42148   6624  -  Is   11:46AM  0:00.01 ovs-vswitchd --pidfile --detach
but clearly there are many errors.help please
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