Re: [Xen-devel] new /etc/xen/network script

Li Ge
2005-08-10T23:28:49Z

I tried the new network script on a couple of my boxes. I got it working
fine with RHEL4 box (x86-32). But somehow it did not work for my SLES9 SP2
boxes (x86-32 and x85-64). The output of ifconfig on RHEL4 box looks right
to me. But the ones on SLES9 SP2 does not. Here are the steps I used and
how they looked like:

1) Right after I start xend:

bl2-1:~ # ifconfig
eth1      Link encap:Ethernet  HWaddr 00:11:25:9D:69:87
          inet addr:9.3.192.194  Bcast:9.3.192.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5309 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1163 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:688727 (672.5 Kb)  TX bytes:192155 (187.6 Kb)
          Interrupt:78

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:20 errors:0 dropped:0 overruns:0 frame:0
          TX packets:20 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1620 (1.5 Kb)  TX bytes:1620 (1.5 Kb)

xen-br0   Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          UP BROADCAST RUNNING 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)

2) Right after I issued command "xm create vm1", it became:

bl2-1:~ # ifconfig
eth1      Link encap:Ethernet  HWaddr 00:11:25:9D:69:87
          inet addr:9.3.192.194  Bcast:9.3.192.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5599 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1277 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:720829 (703.9 Kb)  TX bytes:220263 (215.1 Kb)
          Interrupt:78

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:20 errors:0 dropped:0 overruns:0 frame:0
          TX packets:20 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1620 (1.5 Kb)  TX bytes:1620 (1.5 Kb)

vif2.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2 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:84 (84.0 b)  TX bytes:0 (0.0 b)

xen-br0   Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2 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:56 (56.0 b)  TX bytes:0 (0.0 b)

3) The network was not pingable on domU after domU booted up.

4) Then I shutdown domU, and the output of ifconfig on domU went back to 1)

5) If I switch back to the old network script, network works fine on both
dom0 and domU.

Could this have something to do with the bridge-utils-0.9.6-121.1 which
SLES9 SP2 uses?


Li





             "Ian Pratt"
             <m+Ian.Pratt@cl.c
             am.ac.uk>                                                  To
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                                                                   Subject
                                       [Xen-devel] new /etc/xen/network
             08/09/2005 07:58          script
             PM











I''m proposing to checkin the attached new /etc/xen/network script.
I''m
hoping it will be more robust to the various network startup problems
people have seen by using vendor ifup/ifdown scripts.

Please can people try it out, particularly if you had problems with the
old script.

If the script does fail for you, /var/log/xend.debug may have some
useful info. Please try to dig around to try and understand what has
gone wrong. I''ve attached the output of ifconfig before and after
starting xend for comparison.

We''re still awaiting patches to enable interfaces other than eth0 to be
specified in xend-config.sxp, so if you''re primary interface is eth1
edit the default ''netdev'' parameter at the top of the file.

Thanks,
Ian

*** BEFORE:

eth0      Link encap:Ethernet  HWaddr 00:06:5B:F6:90:B3
          inet addr:108.32.38.50  Bcast:128.232.47.255
Mask:255.255.240.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:85 errors:0 dropped:0 overruns:0 frame:0
          TX packets:97 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:7868 (7.6 Kb)  TX bytes:8233 (8.0 Kb)
          Interrupt:28

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:28 errors:0 dropped:0 overruns:0 frame:0
          TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2392 (2.3 Kb)  TX bytes:2392 (2.3 Kb)



*** AFTER:

eth0      Link encap:Ethernet  HWaddr 00:06:5B:F6:90:B3
          inet addr:108.32.38.50  Bcast:128.232.47.255
Mask:255.255.240.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1689 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:118661 (115.8 Kb)  TX bytes:969 (969.0 b)

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:29 errors:0 dropped:0 overruns:0 frame:0
          TX packets:29 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2486 (2.4 Kb)  TX bytes:2486 (2.4 Kb)

peth0     Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:1757 errors:0 dropped:0 overruns:0 frame:0
          TX packets:13 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:131689 (128.6 Kb)  TX bytes:1003 (1003.0 b)
          Interrupt:28

vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:16 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1689 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:969 (969.0 b)  TX bytes:118661 (115.8 Kb)

xen-br0   Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1687 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:94164 (91.9 Kb)  TX bytes:0 (0.0 b)


# brctl show
bridge name     bridge id               STP enabled     interfaces
xen-br0         8000.feffffffffff       no              vif0.0
                                                        peth0

(See attached file: network)_______________________________________________