Xen network failing

Brian Wheeler bdwheele at indiana.edu
Wed Feb 8 20:54:37 UTC 2006


I've been trying to get xen working on fc5t2 + rawhide and I just can't
get the networking working.

* Here's what I've got installed:
kernel-xen-guest-devel-2.6.15-1.43_FC5
xen-3.0-0.20060130.fc5.6
kernel-xen-hypervisor-devel-2.6.15-1.43_FC5
kernel-xen-hypervisor-devel-2.6.15-1.40_FC5
kernel-xen-guest-devel-2.6.15-1.40_FC5
kernel-xen-hypervisor-2.6.15-1.40_FC5
kernel-xen-guest-2.6.15-1.43_FC5
kernel-xen-guest-2.6.15-1.40_FC5
kernel-xen-hypervisor-2.6.15-1.43_FC5

* I'm booting the 2.6.15-1.43_FC5 hypervisor.

* I scale the memory in Domain-0 down to 128M via
xm mem-set Domain-0 128
(the machine has 512M total)

* I run the newest xenguest-install.py from people.redhat.com.  The
memory is set to 256M, w/a 4G disk image.  I'm pointing to a local ftp
mirror of rawhide.

* Installation starts and it asks for language & keyboard.

* I let DHCP config the interface.

* A quick window flashes (I can't read it -- its too fast), but about 3
or 4 minutes later I get a 'failed to connect to FTP server' message.

* the firewall is turned off, but when the domU is running, there is a
rule:

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere            PHYSDEV
match --physdev-in vif2.0

* ip forwarding is turned on (echo 1 > /proc/sys/net/ipv4/ip_forward)

* ifconfig -a looks like this:

eth0      Link encap:Ethernet  HWaddr 00:B0:D0:CE:CB:4E
          inet addr:129.79.32.152  Bcast:129.79.32.255
Mask:255.255.255.0
          inet6 addr: 2001:18e8:2:32:2b0:d0ff:fece:cb4e/64 Scope:Global
          inet6 addr: fe80::2b0:d0ff:fece:cb4e/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:25332 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2564 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:9050506 (8.6 MiB)  TX bytes:359009 (350.5 KiB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:32 errors:0 dropped:0 overruns:0 frame:0
          TX packets:32 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2059 (2.0 KiB)  TX bytes:2059 (2.0 KiB)

peth0     Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:29744 errors:0 dropped:0 overruns:2 frame:0
          TX packets:2976 errors:0 dropped:0 overruns:0 carrier:0
          collisions:88 txqueuelen:1000
          RX bytes:10154374 (9.6 MiB)  TX bytes:398012 (388.6 KiB)
          Interrupt:5 Base address:0xec00

sit0      Link encap:IPv6-in-IPv4
          NOARP  MTU:1480  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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth1     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth2     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth3     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth4     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth5     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth6     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth7     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2564 errors:0 dropped:0 overruns:0 frame:0
          TX packets:25341 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:359009 (350.5 KiB)  TX bytes:9051241 (8.6 MiB)

vif0.1    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

[ same for vif0.2 - vif0.7 ]

vif2.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:37 errors:0 dropped:0 overruns:0 frame:0
          TX packets:13777 errors:0 dropped:532 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:3832 (3.7 KiB)  TX bytes:1556351 (1.4 MiB)

xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: 2001:18e8:2:32:fcff:ffff:feff:ffff/64 Scope:Global
          inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:17361 errors:0 dropped:0 overruns:0 frame:0
          TX packets:34 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1658926 (1.5 MiB)  TX bytes:2924 (2.8 KiB)

* brctl show displays this:
bridge name     bridge id               STP enabled     interfaces
xenbr0          8000.feffffffffff       no              peth0
                                                        vif0.0
                                                        vif2.0

* the eth0 interface on Dom0 is dhcp generated, if that makes any
difference.

Any clues on what I'm missing?  I'd guess that my ip for the Dom0 is on
the wrong interface, but I'm not sure which one, or if that's even
right.

Thanks!
Brian Wheeler
bdwheele at indiana.edu





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