[Xen-users] Dom0 network problem

[石井俊直 <ishii.toshinao@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

Hello.

I've just started with Xen and configuring Dom0.

My hardware is Core2Duo based Xeon server and I installed Debian etch
for amd64 architecture. The Xen related pachages installed are the  
following.
        linux-image-2.6.17-2-xen-amd64
        linux-modules-2.6.17-2-xen-amd64
        xen-hypervisor-3.0.3-1-amd64
        xen-tools
        xen-utils-3.0.3-1
        xen-utils-common

My problem is that when xend is configure to have bridge network, Dom0
can not communicate with the external machines. I've not tried the other
DomUs yet. (I guess they cannot communicate either.)

The related part of xend-config.sxp is the following.

        (network-script 'network-bridge')
        (vif-script vif-bridge)

If the the above first line is replaced with (network-script network- 
dummy)
then everything works correctly.

I appreciate any help to solve this problem.



Here are something about status and logs.

The routing definition becomes different under the network-bridge. I  
tried
to invoke place a link /etc/rc0.d/S34xend ->  /etc/init.d/xend but it  
did not
solve the problem.

Under network-bridge
        # netstat -rn
        Kernel IP routing table
	Destination     Gateway         Genmask         Flags   MSS Window   
irtt Iface
	10.140.202.0    0.0.0.0         255.255.254.0   U         0  
0          0 eth0
	0.0.0.0         10.140.203.254  0.0.0.0         UG        0  
0          0 eth0
Under network-dummy
        # netstat -r
        Kernel IP routing table
	Destination     Gateway         Genmask         Flags   MSS Window   
irtt Iface
	localnet        *               255.255.254.0   U         0  
0          0 eth0
	default         10.140.203.254  0.0.0.0         UG        0  
0          0 eth0

From /var/log/messages

	 kernel: eth0: Broadcom NetXtreme II BCM5708 1000Base-T (B1) PCI-X  
64-bit 133MHz found at mem ce000000, IRQ 16, node addr 00145e18c59f
        ...
        kernel: bnx2: eth0 NIC Link is Up, 1000 Mbps full duplex
        ...
        kernel: Bridge firewalling registered
        kernel: device vif0.0 entered promiscuous mode
	kernel: audit(1165827245.987:2): dev=vif0.0 prom=256 old_prom=0  
auid=4294967295
        kernel: xenbr0: port 1(vif0.0) entering learning state
        kernel: xenbr0: topology change detected, propagating
        kernel: xenbr0: port 1(vif0.0) entering forwarding state
        kernel: ADDRCONF(NETDEV_UP): peth0: link is not ready
        kernel: bnx2: peth0 NIC Link is Up, 1000 Mbps full duplex
        kernel: ADDRCONF(NETDEV_CHANGE): peth0: link becomes ready
        kernel: device peth0 entered promiscuous mode
	kernel: audit(1165827249.211:3): dev=peth0 prom=256 old_prom=0  
auid=4294967295
        kernel: xenbr0: port 2(peth0) entering learning state
        kernel: xenbr0: topology change detected, propagating
        kernel: xenbr0: port 2(peth0) entering forwarding state

From /var/log/xen/xen.log

	[2006-12-11 17:54:04 xend 4490] INFO (__init__:1072) Xend Daemon  
started
	[2006-12-11 17:54:04 xend 4490] INFO (__init__:1072) Xend changeset:  
Tue Oct 17
        22:09:52 2006 +0100 .
	[2006-12-11 17:54:04 xend.XendDomainInfo 4490] DEBUG (__init__:1072)  
XendDomainI
	nfo.recreate({'paused': 0, 'cpu_time': 11483528780L, 'ssidref': 0,  
'handle': [0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 'shutdown_reason': 0,  
'dying': 0,
	'dom': 0, 'mem_kb': 5021444, 'maxmem_kb': 17179869180,  
'max_vcpu_id': 3, 'crash
        ed': 0, 'running': 1, 'shutdown': 0, 'online_vcpus': 4, 'blocked': 0})
	[2006-12-11 17:54:04 xend.XendDomainInfo 4490] INFO (__init__:1072)  
Recreating d
        omain 0, UUID 00000000-0000-0000-0000-000000000000.
	[2006-12-11 17:54:04 xend.XendDomainInfo 4490] WARNING (__init__: 
1072) No vm pat
        h in store for existing domain 0
	[2006-12-11 17:54:04 xend.XendDomainInfo 4490] DEBUG (__init__:1072)  
Storing VM
	details: {'shadow_memory': '0', 'uuid':  
'00000000-0000-0000-0000-000000000000',
	'on_reboot': 'restart', 'on_poweroff': 'destroy', 'name':  
'Domain-0', 'xend/rest
	art_count': '0', 'vcpus': '4', 'vcpu_avail': '3', 'memory': '4904',  
'on_crash':
        'restart', 'maxmem': '4904'}
	[2006-12-11 17:54:04 xend.XendDomainInfo 4490] DEBUG (__init__:1072)  
Storing dom
	ain details: {'cpu/1/availability': 'online', 'cpu/3/availability':  
'offline', '
	name': 'Domain-0', 'console/limit': '1048576', 'cpu/2/availability':  
'offline',
	'vm': '/vm/00000000-0000-0000-0000-000000000000', 'domid': '0', 'cpu/ 
0/availabil
        ity': 'online', 'memory/target': '5021696'}
	[2006-12-11 17:54:04 xend 4490] DEBUG (__init__:1072) number of  
vcpus to use is 2
	[2006-12-11 17:54:05 xend.XendDomainInfo 4490] DEBUG (__init__:1072)  
XendDomainI
        nfo.handleShutdownWatch

Output of some commnds

        # brctl show
        bridge name     bridge id               STP enabled     interfaces
        xenbr0          8000.feffffffffff       no              vif0.0
                                                                peth0

        # ifconfig
        eth0      Link encap:Ethernet  HWaddr 00:14:5E:18:C5:9F
                inet addr:10.140.203.84  Bcast:10.140.203.255  
Mask:255.255.254.0
                inet6 addr: fe80::214:5eff:fe18:c59f/64 Scope:Link
                UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
                RX packets:133 errors:0 dropped:0 overruns:0 frame:0
                TX packets:60 errors:0 dropped:0 overruns:0 carrier:0
                collisions:0 txqueuelen:0
                RX bytes:21923 (21.4 KiB)  TX bytes:5019 (4.9 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:38 errors:0 dropped:0 overruns:0 frame:0
                TX packets:38 errors:0 dropped:0 overruns:0 carrier:0
                collisions:0 txqueuelen:0
                RX bytes:2880 (2.8 KiB)  TX bytes:2880 (2.8 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  MTU:1500  Metric:1
                RX packets:197 errors:0 dropped:0 overruns:0 frame:0
                TX packets:57 errors:0 dropped:0 overruns:0 carrier:0
                collisions:0 txqueuelen:1000
                RX bytes:27309 (26.6 KiB)  TX bytes:5637 (5.5 KiB)
                Interrupt:16 Memory:ce000000-ce011100

        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 NOARP  MTU:1500  Metric:1
                RX packets:60 errors:0 dropped:0 overruns:0 frame:0
                TX packets:133 errors:0 dropped:0 overruns:0 carrier:0
                collisions:0 txqueuelen:0
                RX bytes:5019 (4.9 KiB)  TX bytes:21923 (21.4 KiB)

        xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
                inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
                UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
                RX packets:187 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:23880 (23.3 KiB)  TX bytes:0 (0.0 b)

Thank you.




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