Xen users - May 2008 - virtual network hangs during a file download

I just managed to get xen 3.2 up and running in Centos 5.1.  I installed the
rpms from xen.org (first the xen 3.1 then 3.2 rpms)

my grub setting in dom0 is
title CentOS (2.6.18-xen_3.2.0)
        root (hd0,5)
        kernel /boot/xen.gz-3.2
        module /boot/vmlinuz-2.6-xen ro root=LABEL=/ rhgb quiet
        module /boot/initrd-2.6-xen.img

where vmlinuz-2.6-xen is a symlink to vmlinuz-2.6.18-xen_3.1.0
and initrd-2.6-xen.img is a symlink to initrd-2.6.18-xen_3.1.0.img

I assumed this is the way its supposed to be done with xen 3.2 kernel
booting the 3.1 vmlinuz and initrd images.

I got a domU Centos-Asterisk up and running using a e100 pci card, hidden
from dom0 with pciback.
Its settings are:
name = "Centos-Asterisk"
maxmem = 512
memory = 512
vcpus = 1
bootloader = "/usr/bin/pygrub"
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
vfb = [  ]
disk = [ "tap:aio:/vm/Centos-Asterisk.img,xvda,w" ]
vif = [ ''mac=00:16:3e:70:21:02,bridge=peth0'' ]
pci = [ ''0000:03:08.0'' ]

The domU boots fine and negotiates an IP from my ISP using eth0 ( the pci
card ) and then connects eth1 (virtual interface) to the bridge peth0 in
dom0.
Everything works fine  (all other clients in the network and other
domU''s
can connect  and yum installs even work)  except when I try to download a
file in dom0 , it will work for a little while and then hangs.  The domU is
still connected to the internet but it cannot ping dom0.  Dom0 cannot ping
domU as well.

As I said, I have just began to test the domU.  This behavior repeats each
time I try to download anything using Dom0.  I have yet to try if I can
reproduce the hang with other network clients.

Any help is appreciated.

Thanks
Chris


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On Sat, May 10, 2008 at 9:03 AM, Christopher Isip <cmisip@gmail.com>
wrote:
> I just managed to get xen 3.2 up and running in Centos 5.1.  I installed
> the rpms from xen.org (first the xen 3.1 then 3.2 rpms)
> I got a domU Centos-Asterisk up and running using a e100 pci card, hidden
> from dom0 with pciback.
> Its settings are:
> name = "Centos-Asterisk"
> maxmem = 512
> memory = 512
> vcpus = 1
> bootloader = "/usr/bin/pygrub"
> on_poweroff = "destroy"
> on_reboot = "restart"
> on_crash = "restart"
> vfb = [  ]
> disk = [ "tap:aio:/vm/Centos-Asterisk.img,xvda,w" ]
> vif = [ ''mac=00:16:3e:70:21:02,bridge=peth0'' ]
> pci = [ ''0000:03:08.0'' ]
>
> The domU boots fine and negotiates an IP from my ISP using eth0 ( the pci
> card ) and then connects eth1 (virtual interface) to the bridge peth0 in
> dom0.
> Everything works fine  (all other clients in the network and other
domU''s
> can connect  and yum installs even work)  except when I try to download a
> file in dom0 , it will work for a little while and then hangs.  The domU is
> still connected to the internet but it cannot ping dom0.  Dom0 cannot ping
> domU as well.
>
> As I said, I have just began to test the domU.  This behavior repeats each
> time I try to download anything using Dom0.  I have yet to try if I can
> reproduce the hang with other network clients.
>
> Any help is appreciated.
>
This might be related, although no resolution is mentioned in the thread
http://xen.markmail.org/search/?q=dom0+download+todd+deshane#query:dom0%20download%20todd%20deshane%20from%3A%22Todd%20Deshane%22+page:1+mid:j7xhjnpzn5abklbn+state:results

Cheers,
Todd


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