Re: [Xen-users] Hotplug scripts not working?

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Thu, Jan 06, 2011 at 12:21:09PM -0800, chrisbenninger wrote:
>    I recently updated my test machine running a custom 2.6.31.10 kernel from
>    Xen 3.4 to Xen 4.0 on Debian squeeze.
>

You should update your dom0 kernel.

2.6.31.x tree is unsupported and not maintained anymore.
It has many known bugs.

You should update to xen/stable-2.6.32.x git branch.
See: http://wiki.xen.org/xenwiki/XenParavirtOps


>    At this point I can boot a domU, but only when I have no 'vif' defined in
>    it's config file. When I try and use any form of networking, NAT or bridge
>    I get a kernel Oops:
> 
>      (cdrom_add_media_watch() file=drivers/xen/blkback/cdrom.c, line=108)
>      nodename:backend/vbd/1/2049
>      (cdrom_is_type() file=drivers/xen/blkback/cdrom.c, line=95) type:0
>      blkback: ring-ref 8, event-channel 10, protocol 1 (x86_64-abi)
>      BUG: unable to handle kernel NULL pointer dereference at
>      0000000000000008

The driver crashed.


>      IP: [<ffffffff812509b4>] netback_uevent+0x34/0xba
>      PGD 0
>      Oops: 0000 [#1] SMP
>      last sysfs file: /sys/devices/xen-backend/vif-2-0/uevent
>      CPU 0
> 
>    And after that, I get:
> 
>      Error: Device 0 (vif) could not be connected. Hotplug scripts not
>      working.
> 
>    Any help would be fantastic!

hotplug scripts won't work because the netback driver crashed.
Update the dom0 kernel.

-- Pasi


_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users