Hello @all,
thanks for all the helpfull answers in this mailing list. They helped me
compiling a new kernel 2.6.10.11 with Xen 2.0.6 (my first one), setting
up a dom0 with RAID, LVM and loop devices for domU, integrating a second
network as xen-br1 (I'm calling the /etc/xen/scripts/network script from
within /etc/init.d/xend to bring up / down the second bridge.) and
bootstrapping my domU VMM.
But finally I got stuck just before the goal.
When in my dom0 I can ping successfully any computer on the same subnet
and any web server (e. g. www.heise.de)
But in my domU I can only ping the internal computers. Pinging a
web-server gives me an "destination host unreachable", even though he
can transform a DNS-name into the IP-adress, but thats probably because
of my own DNS on 192.168.10.2.
That's the result of ping in domU:
rc_manager:~# ping www.heise.de
PING www.heise.de (193.99.144.85) 56(84) bytes of data.
#From 192.168.250.1 icmp_seq=1 Destination Host Unreachable
From 192.168.250.1 icmp_seq=2 Destination Host Unreachable
From 192.168.250.1 icmp_seq=3 Destination Host Unreachable
From 192.168.250.1 icmp_seq=5 Destination Host Unreachable
From 192.168.250.1 icmp_seq=6 Destination Host Unreachable
From 192.168.250.1 icmp_seq=7 Destination Host Unreachable
--- www.heise.de ping statistics ---
8 packets transmitted, 0 received, +6 errors, 100% packet loss, time 7027ms
, pipe 3
A few words on the network topology:
192.168.10.1 is gateway to internet
dom0 and domU are DHCP-Clients in 192.168.10.x network
I have two networkcards in my xen-machine:
eth0 is connect to the 192.168.10.x net
eth1 is not used at the moment (domU will be DNS/DHCP/NFS Server for a
new subnet 192.168.250.x with fixed domU fixed IP 192.168.10.1 and dom0
fixed IP 192.168.250.2)
Might there be a problem with MACs of domU (look at the end of this
mail). Once I read something with first byte of MAC address and
multicast modus or something?
Or does domU mix up the two nics? (Don't think so.)
I hope you can give me some advice where to look at.
Regards,
Mario Minati
In the following I paste infomation on the network configuration.
*dom0*
xen-001:~# ifconfig
eth0 Protokoll:Ethernet Hardware Adresse 00:50:04:F6:01:82
inet Adresse:192.168.10.246 Bcast:192.168.10.255
Maske:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:964 errors:0 dropped:0 overruns:0 frame:0
TX packets:395 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:1000
RX bytes:128050 (125.0 KiB) TX bytes:56409 (55.0 KiB)
Interrupt:11 Basisadresse:0xe400
eth1 Protokoll:Ethernet Hardware Adresse 00:06:4F:18:0C:E1
inet Adresse:192.168.250.2 Bcast:192.168.250.255
Maske:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:30 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:1000
RX bytes:0 (0.0 b) TX bytes:1800 (1.7 KiB)
Interrupt:5 Basisadresse:0xa000
lo Protokoll:Lokale Schleife
inet Adresse:127.0.0.1 Maske:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:3577 errors:0 dropped:0 overruns:0 frame:0
TX packets:3577 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:0
RX bytes:391367 (382.1 KiB) TX bytes:391367 (382.1 KiB)
vif1.0 Protokoll:Ethernet Hardware Adresse FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:207 errors:0 dropped:0 overruns:0 frame:0
TX packets:801 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:0
RX bytes:27421 (26.7 KiB) TX bytes:99617 (97.2 KiB)
vif1.1 Protokoll:Ethernet Hardware Adresse FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:30 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:0
RX bytes:1260 (1.2 KiB) TX bytes:0 (0.0 b)
xen-br0 Protokoll:Ethernet Hardware Adresse 00:50:04:F6:01:82
inet Adresse:192.168.10.246 Bcast:192.168.10.255
Maske:255.255.255.255
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:793 errors:0 dropped:0 overruns:0 frame:0
TX packets:198 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:0
RX bytes:87995 (85.9 KiB) TX bytes:26798 (26.1 KiB)
xen-br1 Protokoll:Ethernet Hardware Adresse 00:06:4F:18:0C:E1
inet Adresse:192.168.250.2 Bcast:192.168.250.255
Maske:255.255.255.255
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:30 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:0
RX bytes:840 (840.0 b) TX bytes:0 (0.0 b)
xen-001:~# brctl show
bridge name bridge id STP enabled interfaces
xen-br0 8000.005004f60182 no eth0
vif1.0
xen-br1 8000.00064f180ce1 no eth1
vif1.1
xen-001:~# route -n
Kernel IP Routentabelle
Ziel Router Genmask Flags Metric Ref Use
Iface
192.168.250.0 0.0.0.0 255.255.255.0 U 0 0 0
xen-br1
192.168.10.0 0.0.0.0 255.255.255.0 U 0 0 0
xen-br0
0.0.0.0 192.168.10.1 0.0.0.0 UG 0 0 0
xen-br0
xen-001:~# iptables
iptables v1.2.11: no command specified
Try `iptables -h' or 'iptables --help' for more information.
xen-001:~# iptables --list
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
*domU*
rc_manager:~# ifconfig
eth0 Link encap:Ethernet HWaddr AA:00:00:00:01:00
inet addr:192.168.10.250 Bcast:192.168.10.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:818 errors:0 dropped:0 overruns:0 frame:0
TX packets:210 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:101509 (99.1 KiB) TX bytes:27847 (27.1 KiB)
eth1 Link encap:Ethernet HWaddr AA:00:00:00:01:01
inet addr:192.168.250.1 Bcast:192.168.250.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:30 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:1260 (1.2 KiB)
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:24 errors:0 dropped:0 overruns:0 frame:0
TX packets:24 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2592 (2.5 KiB) TX bytes:2592 (2.5 KiB)
rc_manager:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.250.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
0.0.0.0 192.168.250.1 0.0.0.0 UG 0 0 0 eth1
0.0.0.0 192.168.10.1 0.0.0.0 UG 0 0 0 eth0
*domU Configuration*
xen-001:/etc/xen/auto# cat rc_manager
# -*- mode: python; -*-
kernel = "/boot/vmlinuz-2.6.11-xenU"
memory = 128
name = "rc_manager"
nics=2
vif = [ 'mac=aa:00:00:00:01:00, bridge=xen-br0', 'mac=aa:00:00:00:01:01,
bridge=xen-br1' ]
disk = [ 'file:/opt/xen/disks/rc_manager/main.loop,sda1,w',
'file:/opt/xen/disks/rc_manager/opt.loop,sda2,w',
'file:/opt/xen/disks/rc_manager/swap.loop,sda3,w' ]
root = "/dev/sda1 ro"
restart = 'onreboot'
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