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Re: [Xen-users] dom0 has no bridge

To: Fong Vang <sudoyang@xxxxxxxxx>, Xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] dom0 has no bridge
From: Hilton Day <xlot@xxxxxxxxxxxxxxxxx>
Date: Fri, 13 Oct 2006 07:58:45 +1000
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Hi Fong,

This sounds like a known bug with module-loading in Fedora:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=202182

From Thomas Hutterer's comment there:
To load the neccesary modules,I have inserted the following commands in
/etc/init.d/xend on the host case "$1" in
  start)
        echo -n $"Starting $prog: "
        modprobe blkbk
        modprobe netbk
        modprobe netloop


And I have added following line in /etc/modprobe.conf in the guest: alias scsi_hostadapter xenblk


Now the guest starts without any problems.

Fong Vang wrote:
I have a Fedora Core 5 system configured for Xen.  When dom0 runs the
kernel-xen0 kernel it works fine (all domU's can be created).
kernel-xen0 does not have PAE support so I have to use the kernel-xen
rpm.  When using kernel-xen, however, the network is not setup
correctly -- the familiar xenbr0, vif, peth0 are not created.  What
script sets this up when dom0 is booted?  It appears xend is running:

# ps -ef|grep xen
root        20    19  0 15:54 ?        00:00:00 [xenwatch]
root        21    19  0 15:54 ?        00:00:00 [xenbus]
root      2014     1  0 15:54 ?        00:00:00 xenstored
--pid-file=/var/run/xenstore.pid
root 2018 1 0 15:54 ? 00:00:00 python /usr/sbin/xend start root 2019 2018 0 15:54 ? 00:00:00 python /usr/sbin/xend start
root      2022     1  0 15:54 ?        00:00:00 xenconsoled

The bridge module is also loaded:

# lsmod|grep bridge
bridge                 51669  0

What am I missing here?  I need to use the PAE-enabled kernel to use
more than 4GB of RAM.

Any help is appreciated.

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