Re: [ovs-discuss] Open vSwitch installation in userspace.
I was running in userspace to quickly get something up and running. Also I didn't have the dom0 kernel code when I first started with Open vSwitch. Hence when I ran ./configure --with-l26=/lib/modules/2.6.26-2-xen-686/build i got an error saying that the build directory was missing. I am going to take your suggestion and use the kernel module. I downloaded the header for 2.6.26-2-xen-686, but I need to figure out how to link it to the kernel and have a build folder. Thanks --Hardeep On Wed, Aug 4, 2010 at 2:12 PM, Jesse Gross je...@nicira.com wrote: On Wed, Aug 4, 2010 at 1:32 PM, Hardeep Uppal hardeep...@gmail.comwrote: Hi Jesse, Thanks for your reply. I can see that OpenvSwicth created the bridge br0. But when I update my domU.cfg file to update the network bridge to br0 from eth0, domU does not boot and I get the following error $ sudo xm create domU.cfg Using config file /etc/xen/domU.cfg. Error: Device 0 (vif) could not be connected. Hotplug scripts not working. The bridge should be visible to Xen right? I can see the bridge when I run ifconfig. e...@ettm:~$ ifconfig br0 Link encap:Ethernet HWaddr 00:25:64:49:d7:94 inet addr:128.xxx.x.xx Bcast:128.208.3.255 Mask:255.255.255.0 inet6 addr: fe80::225:64ff:fe49:d794/64 Scope:Link UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:14330 errors:0 dropped:0 overruns:0 frame:0 TX packets:1313 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:2297956 (2.2 MB) TX bytes:463836 (463.8 KB) Do I need to do something else to make domU use br0 created by open vswicth? Xen is expecting to use the bridge tools to connect the virtual interface. Since Open vSwitch is not the bridge, you either need to modify the Xen scripts to use the Open vSwitch commands directly or use our bridge compatibility layer, which as I mentioned requires kernel support. Is there a reason why you need to run in userspace? ___ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss_openvswitch.org
Re: [ovs-discuss] Open vSwitch installation in userspace.
Hi Jesse, I followed the steps in INSTALL.usespace to create bridge br0 and there were no error messages. How do I check if the bridge br0 is created? I tried brctl show but i didn't see bridge br0. I am running Xen3.3 with Debian kernel 2.6.26-2-xen-686 as dom0 and ubuntu 9.04 as domUs. I have a linux bridge eth0 which is bounded to interfaces peth0 and vif1.0. e...@ettm:~$ brctl show bridge namebridge id STP enabledinterfaces eth08000.00256449d794 no peth0 vif1.0 pan08000. no I want to create a bridge br0 using open vswitch with interfaces peth0 and vif1.0 and replace the linux bridge eth0. I am not sure how to go about doing that using open vswitch. I would appreciate any help I can get. Thanks Hardeep On Fri, Jul 30, 2010 at 3:09 PM, Jesse Gross je...@nicira.com wrote: On Thu, Jul 29, 2010 at 1:36 PM, Hardeep Uppal hardeep...@gmail.comwrote: r...@ettm:/home/ettm/Desktop/openvswitch-1.0.1# ovs-vswitchd unix:/usr/local/var/run/openvswitch/db.sock Jul 29 12:43:21|1|reconnect|INFO|unix:/usr/local/var/run/openvswitch/db.sock: connecting... Jul 29 12:43:21|2|reconnect|INFO|unix:/usr/local/var/run/openvswitch/db.sock: connected Jul 29 12:43:21|3|dpif_linux|ERR|/proc/devices: openvswitch major not found (is the module loaded?) Jul 29 12:43:21|4|dpif|WARN|failed to enumerate system datapaths: No such device Jul 29 12:55:12|5|dpif_linux|ERR|/proc/devices: openvswitch major not found (is the module loaded?) Jul 29 12:55:12|6|dpif|WARN|failed to create datapath br0: No such device I am not sure what the error corresponds to. I would appreciate any help. The reason for these error messages is that by default Open vSwitch assumes that a kernel based datapath is being created, which it cannot do if the kernel module is not loaded. If you look at the next line in the INSTALL.userspace directions you'll see: ovs-vsctl set bridge br0 datapath_type=netdev The netdev datapath type corresponds to userspace, so the errors should go away once you give it that command. Since the kernel module is our primary datapath you may see a few additional error messages about not being able to contact it but you can safely ignore those. ___ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss_openvswitch.org
Re: [ovs-discuss] Open vSwitch installation in userspace.
On Fri, Jul 30, 2010 at 4:47 PM, Hardeep Uppal hardeep...@gmail.com wrote: Hi Jesse, I followed the steps in INSTALL.usespace to create bridge br0 and there were no error messages. How do I check if the bridge br0 is created? I tried brctl show but i didn't see bridge br0. I am running Xen3.3 with Debian kernel 2.6.26-2-xen-686 as dom0 and ubuntu 9.04 as domUs. I have a linux bridge eth0 which is bounded to interfaces peth0 and vif1.0. e...@ettm:~$ brctl show bridge namebridge id STP enabledinterfaces eth08000.00256449d794 no peth0 vif1.0 pan08000. no I want to create a bridge br0 using open vswitch with interfaces peth0 and vif1.0 and replace the linux bridge eth0. I am not sure how to go about doing that using open vswitch. I would appreciate any help I can get. brctl is part of the Linux bridging tools, which are not the preferred method of interacting with Open vSwitch. We do have a compatibility layer but it requires kernel support. A simple way to see if a bridge was created is check if the bridge interface exists. In this case ifconfig br0 should show an interface. You can also see the list of bridges using ovs-vsctl list-br. ___ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss_openvswitch.org
Re: [ovs-discuss] Open vSwitch installation in userspace.
Have you loaded the openvswitch_mod module? 2010/7/30 Hardeep Uppal hardeep...@gmail.com Hi, I am new to Open vSwitch and had a few question about open vswitch setup in userspace in dom0 (2.6.26-2-xen-686). I followed steps 1 to 5 from INSTALL.Linux to compile and install open vswitch. % ./configure % make % su % make install I then initialize the configuration database using ovsdb-tools as instructed on step 7. % ovsdb-tool create /usr/local/etc/ovs-vswitchd.conf.db vswitchd/vswitch.ovsschema I made sure that directory /sys/class/misc/tun and /dev/net/tun exist. All this looked like it worked fine until I tried to initialize the database and started open vswitch daemon. I got the following error when I tried to setup a bridge using the command ovs-vsctl add-br br0. r...@ettm:/home/ettm/Desktop/openvswitch-1.0.1# ovsdb-tool create /usr/local/etc/ovs-vswitchd.conf.db vswitchd/vswitch.ovsschema r...@ettm:/home/ettm/Desktop/openvswitch-1.0.1# ovsdb-server /usr/local/etc/ovs-vswitchd.conf.db --remote=punix:/usr/local/var/run/openvswitch/db.sock Jul 29 12:42:33|1|reconnect|INFO|unix:/tmp/stream-unix.8222.0: connecting... Jul 29 12:42:33|2|reconnect|INFO|unix:/tmp/stream-unix.8222.0: connected Jul 29 12:42:39|3|jsonrpc|INFO|unix:/tmp/stream-unix.8222.0: connection closed Jul 29 12:42:39|4|reconnect|INFO|unix:/tmp/stream-unix.8222.0: connection dropped Jul 29 12:43:21|5|reconnect|INFO|unix:/tmp/stream-unix.8251.0: connecting... Jul 29 12:43:21|6|reconnect|INFO|unix:/tmp/stream-unix.8251.0: connected Jul 29 12:55:12|7|reconnect|INFO|unix:/tmp/stream-unix.10566.0: connecting... Jul 29 12:55:12|8|reconnect|INFO|unix:/tmp/stream-unix.10566.0: connected Jul 29 12:55:12|9|jsonrpc|INFO|unix:/tmp/stream-unix.10566.0: connection closed Jul 29 12:55:12|00010|reconnect|INFO|unix:/tmp/stream-unix.10566.0: connection dropped r...@ettm:/home/ettm/Desktop/openvswitch-1.0.1# ovs-vsctl init Alarm clock r...@ettm:/home/ettm/Desktop/openvswitch-1.0.1# ovs-vswitchd unix:/usr/local/var/run/openvswitch/db.sock Jul 29 12:43:21|1|reconnect|INFO|unix:/usr/local/var/run/openvswitch/db.sock: connecting... Jul 29 12:43:21|2|reconnect|INFO|unix:/usr/local/var/run/openvswitch/db.sock: connected Jul 29 12:43:21|3|dpif_linux|ERR|/proc/devices: openvswitch major not found (is the module loaded?) Jul 29 12:43:21|4|dpif|WARN|failed to enumerate system datapaths: No such device Jul 29 12:55:12|5|dpif_linux|ERR|/proc/devices: openvswitch major not found (is the module loaded?) Jul 29 12:55:12|6|dpif|WARN|failed to create datapath br0: No such device I am not sure what the error corresponds to. I would appreciate any help. Thanks, Hardeep ___ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss_openvswitch.org ___ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss_openvswitch.org
