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[Xen-users] Hotplug scripts not working?

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: chrisbenninger <chrisbenninger@xxxxxxxxx>
  • Date: Thu, 6 Jan 2011 12:21:09 -0800
  • Delivery-date: Thu, 06 Jan 2011 12:22:43 -0800
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

I recently updated my test machine running a custom kernel from Xen 3.4 to Xen 4.0 on Debian squeeze.

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
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!

Chris Benninger

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