Hello all
I am using open source xen v 3.0.4. When network-nat and vif-nat is
activated in the config file, modified guests boot ok but hvm guests
does not have network connection. Here is the config files:
xend-config.sxp
-------------------------------------
#(network-script network-bridge)
#(vif-script vif-bridge)
(network-script network-nat)
(vif-script vif-nat)
-------------------------------------
I have commented the following lines from qemu-ifup script as I don't
want to use bridge.
-------------------------------------
#ifconfig $1 0.0.0.0 up
#brctl addif $2 $1
-------------------------------------
I have also try commenting only the second line from the script. Still
no luck. In that case an interface named tap is created also.
And the config file for the domain:
-------------------------------------
import os, re
arch = os.uname()[4]
if re.search('64', arch):
arch_libdir = 'lib64'
else:
arch_libdir = 'lib'
kernel = "/usr/lib/xen/boot/hvmloader"
builder='hvm'
memory = 512
shadow_memory = 8
name = "winxp"
acpi=0
vif = [ 'ip=192.168.3.1, mac=aa:00:00:50:02:f0, type=ioemu,
model=rtl8139' ]
disk = [ 'file:/mnt/sda5/xen/images/winxp1.img,hda,w',
'phy:/dev/cdrom,hdb:cdrom,r' ]
device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
sdl=1
vnc=0
vncpasswd=''
stdvga=0
serial='pty'
-------------------------------------
When this domain is booted, it boots ok. Here is the network-nat status
output.
============================================================
eth0 Link encap:Ethernet HWaddr 00:17:08:37:F1:B7
inet addr:10.0.0.5 Bcast:10.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:30 errors:0 dropped:0 overruns:0 frame:0
TX packets:20 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4530 (4.4 Kb) TX bytes:2217 (2.1 Kb)
Interrupt:20
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:6 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:328 (328.0 b) TX bytes:328 (328.0 b)
vif1.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
inet addr:192.168.3.128 Bcast:0.0.0.0 Mask:255.255.255.255
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:32
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
192.168.3.1 dev vif1.0 scope link src 192.168.3.128
10.0.0.0/8 dev eth0 proto kernel scope link src 10.0.0.5
127.0.0.0/8 via 127.0.0.1 dev lo scope link
default via 10.0.0.2 dev eth0
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.3.1 0.0.0.0 255.255.255.255 UH 0 0 0
vif1.0
10.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0
eth0
127.0.0.0 127.0.0.1 255.0.0.0 UG 0 0 0 lo
0.0.0.0 10.0.0.2 0.0.0.0 UG 0 0 0
eth0
============================================================
When this domain is booted, it cannot connect anywhere. It can not even
ping 192.168.3.128 !!!!
And when the dom0 pings 192.168.3.1 Destination host unreachable error
is get. The tcpdump in dom0 does not show any packets flowing.
I have tried the same config with an ubuntu dapper hvm guest and still
no connections.
But when a modified guest is booted with the same network config, there
is no problem. Everyone can ping each other and domU does have an
internet connection. Here is the network-nat status output of the
modified guest.
============================================================
eth0 Link encap:Ethernet HWaddr 00:17:08:37:F1:B7
inet addr:10.0.0.5 Bcast:10.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1706 errors:0 dropped:0 overruns:0 frame:0
TX packets:1546 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1333224 (1.2 Mb) TX bytes:159280 (155.5 Kb)
Interrupt:20
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:9 errors:0 dropped:0 overruns:0 frame:0
TX packets:9 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:500 (500.0 b) TX bytes:500 (500.0 b)
vif10.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
inet addr:192.168.3.128 Bcast:0.0.0.0 Mask:255.255.255.255
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:18 errors:0 dropped:0 overruns:0 frame:0
TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:32
RX bytes:1242 (1.2 Kb) TX bytes:3118 (3.0 Kb)
192.168.3.1 dev vif10.0 scope link src 192.168.3.128
10.0.0.0/8 dev eth0 proto kernel scope link src 10.0.0.5
127.0.0.0/8 via 127.0.0.1 dev lo scope link
default via 10.0.0.2 dev eth0
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.3.1 0.0.0.0 255.255.255.255 UH 0 0 0
vif10.0
10.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 eth0
127.0.0.0 127.0.0.1 255.0.0.0 UG 0 0 0 lo
0.0.0.0 10.0.0.2 0.0.0.0 UG 0 0 0 eth0
============================================================
I have also tried dhcp instead of statically giving an ip address. Still
the modified guest takes an ip address and have network, the hvm guest
can not even reach the dhcp server in dom0.
Any ideas?
Erdem
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