[libvirt] troubles creating an OVS network with xen, libxl and libvirt.

[Alvin Starr]

On 05/07/2014 01:23 PM, Jim Fehlig wrote:
> Alvin Starr wrote:
>> One more quirk
>>
>> I can create a domain using the lx commands and a slightly modified
>> .conf file.
>> "virsh  start kvmtest" returns a failure.
>> I tracked the information passed to vif-openvswitch and it is being
>> called with type_if=tap and it needs to be type_if=vif.
> Sounds like a Xen bug.  Does it call vif-openvswitch twice?  Once for an
> emulated NIC and once for PV nic?
openvswitch is called twice once with ACTION=online and again with 
ACTION=offline

>> Any help would be greatly appreciated once again.
> [...]
>> name = "kvmtest"
>> uuid = "1883fa66-d052-4bb2-b57a-8571f77ae69e"
>> maxmem = 4096
>> memory = 4096
>> vcpus = 3
>> builder = "hvm"
>> kernel = "/usr/lib/xen/boot/hvmloader"
>> boot = "nc"
>> pae = 1
>> acpi = 1
>> apic = 1
>> hap = 0
>> viridian = 0
>> rtc_timeoffset = 0
>> localtime = 0
>> on_poweroff = "destroy"
>> on_reboot = "restart"
>> on_crash = "restart"
>> device_model = "/usr/lib64/xen/bin/qemu-dm"
>> usb = 1
>> usbdevice = "tablet"
>> sdl = 0
>> vnc = 1
>> vncunused = 1
>> keymap = "en-us"
>> disk = [ "phy:/dev/xen_images/kvmtest,hda,w" ]
>> vif = [ "mac=00:16:3e:3f:31:36,bridge=br0,script=vif-bridge,model=e1000" ]
>>    
> Shouldn't that be '...,script=vif-openvswitch,...'?  Also, if your guest
> has PV drivers, you could set 'model=netfront' to explicitly say you
> only want the PV NIC.
Your correct. I hand fixed it and ran my tests but then foolishly reran 
domxml-to-native overwriting my fixes.
I gave various nic configurations a try and e1000 was just the last one 
before moving to looking for the problem in other places.
I will likely use the PV nic for any real systems but now I am just 
trying to get the kinks out.

>
> Regards,
> Jim
>
>> parallel = "none"
>> serial = "pty"
>>    


-- 
Alvin Starr                   ||   voice: (905)513-7688
Netvel Inc.                   ||   Cell:  (416)806-0133
alvin at netvel.net              ||

-------------- next part --------------
add type_if=tap
SUBSYSTEM=net
DEVPATH=/devices/virtual/net/vif19.-1-emu
TAGS=:systemd:
ACTION=add
PWD=/
ID_MM_CANDIDATE=1
SYSTEMD_ALIAS=/sys/subsystem/net/devices/vif19.-1-emu
USEC_INITIALIZED=753726149
SHLVL=1
IFINDEX=38
INTERFACE=vif19.-1-emu
UDEV_CALL=1
SEQNUM=6429
_=/usr/bin/env
online type_if=vif
XENBUS_TYPE=vif
script=/etc/xen/scripts/vif-openvswitch
vif=vif19.0
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
PWD=/
LANG=en_US.UTF-8
XENBUS_PATH=backend/vif/19/0
NOTIFY_SOCKET=@/org/freedesktop/systemd1/notify
XENBUS_BASE_PATH=backend
SHLVL=1
INTERFACE=vif19.0-emu
netdev=
_=/usr/bin/env
online type_if=vif
SUBSYSTEM=xen-backend
DRIVER=vif
XENBUS_TYPE=vif
DEVPATH=/devices/vif-19-0
script=/etc/xen/scripts/vif-openvswitch
vif=vif19.0
ACTION=online
MODALIAS=xen-backend:vif
PWD=/
USEC_INITIALIZED=753811959
XENBUS_PATH=backend/vif/19/0
XENBUS_BASE_PATH=backend
SHLVL=1
UDEV_CALL=1
SEQNUM=6436
_=/usr/bin/env
add type_if=tap
XENBUS_TYPE=vif
script=/etc/xen/scripts/vif-openvswitch
vif=vif19.0
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
PWD=/
LANG=en_US.UTF-8
XENBUS_PATH=backend/vif/19/0
NOTIFY_SOCKET=@/org/freedesktop/systemd1/notify
XENBUS_BASE_PATH=backend
SHLVL=1
INTERFACE=vif19.0-emu
netdev=
_=/usr/bin/env
offline type_if=vif
SUBSYSTEM=xen-backend
DRIVER=vif
XENBUS_TYPE=vif
DEVPATH=/devices/vif-19-0
script=/etc/xen/scripts/vif-openvswitch
vif=vif19.0
ACTION=offline
MODALIAS=xen-backend:vif
PWD=/
USEC_INITIALIZED=753811959
XENBUS_PATH=backend/vif/19/0
XENBUS_BASE_PATH=backend
SHLVL=1
UDEV_CALL=1
SEQNUM=6442
_=/usr/bin/env
offline type_if=vif
XENBUS_TYPE=vif
script=/etc/xen/scripts/vif-openvswitch
vif=vif19.0
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
PWD=/
LANG=en_US.UTF-8
XENBUS_PATH=backend/vif/19/0
NOTIFY_SOCKET=@/org/freedesktop/systemd1/notify
XENBUS_BASE_PATH=backend
SHLVL=1
INTERFACE=vif19.0-emu
netdev=
_=/usr/bin/env
remove type_if=tap
XENBUS_TYPE=vif
script=/etc/xen/scripts/vif-openvswitch
vif=vif19.0
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
PWD=/
LANG=en_US.UTF-8
XENBUS_PATH=backend/vif/19/0
NOTIFY_SOCKET=@/org/freedesktop/systemd1/notify
XENBUS_BASE_PATH=backend
SHLVL=1
INTERFACE=vif19.0-emu
netdev=
_=/usr/bin/env