[Xen-users] Re: [Fedora-xen] Network Problem after update 3.0 -> 3.1: blkback

[Mark Nielsen <mnielsen@xxxxxxxxxx>]

there were some changes in how networking is done going from 5.0 to 5.1. 
You may need to revisit the documentation for CentOS 5.1
kfx wrote:
> Hello,
>
> I have a big problem:
> Dom0 is centos5.1, domU are centos5.1. My setup is really simple, the 
> only thing is that I give 3 nics to the domU so I use a modified 
> network script (which has worked since january... since fedora 6):
> "
> #!/bin/sh
> dir=$(dirname "$0")
> "$dir/network-bridge" "$@" vifnum=0
> "$dir/network-bridge" "$@" vifnum=1
> "$dir/network-bridge" "$@" vifnum=2
> "
>
> So I have updated my xen dom0 from 3.0.3-rc5-8.1.15.el5 to 
> 3.1.0-53.1.4.el5 (and kernel-xen 2.6.18-8.1.15.el5xen to 
> 2.6.18-53.1.4.el5xen) and now my domU cant access the network. The 
> interfaces are good in the domU, all seems to be ok but there are no 
> connectivity at all (no arp entries). This message shows up on the 
> dom0 each time I launch a domU:
> blkback: ring-ref 9, event-channel 7, protocol 1 (x86_64-abi)
>
> Do someone know what is happening ? this is very embarrassing after a 
> simple upgrade... Hopefully I have another identical server (Centos 
> 5.0 with 5.1 domUs) which is still in 3.0 but I cant stay not updated.
> Thanks for any help.
>
> xm info:
> host                   : host.foo.com
> release                : 2.6.18-53.1.4.el5xen
> version                : #1 SMP Fri Nov 30 01:21:23 EST 2007
> machine                : x86_64
> nr_cpus                : 4
> nr_nodes               : 1
> sockets_per_node       : 2
> cores_per_socket       : 1
> threads_per_core       : 2
> cpu_mhz                : 2992
> hw_caps                : bfebfbff:20100800:00000000:00000180:0000641d
> total_memory           : 4095
> free_memory            : 3246
> xen_major              : 3
> xen_minor              : 1
> xen_extra              : .0-53.1.4.el5
> xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p
> xen_pagesize           : 4096
> platform_params        : virt_start=0xffff800000000000
> xen_changeset          : unavailable
> cc_compiler            : gcc version 4.1.2 20070626 (Red Hat 4.1.2-14)
> cc_compile_by          : mockbuild
> cc_compile_domain      :
> cc_compile_date        : Fri Nov 30 00:37:12 EST 2007
> xend_config_format     : 2
>
>
> --
> Fedora-xen mailing list
> Fedora-xen@xxxxxxxxxx
> https://www.redhat.com/mailman/listinfo/fedora-xen

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