[Xen-devel] Re: 2.6.37 PV on HVM issues

[Christian Tramnitz <chris.ace@xxxxxxx>]

Alex Bligh wrote:
> Bug filed:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/684875
The bug has been marked as fixed and I can confirm that it now (using 
2.6.37-12-server) tries to create an xvd device (instead of sd) but I'm 
still unable to boot Natty PV-on-HVM (as HVM domain with just xvd and 
non-ioemu devices).
According to dmesg everything is fine:

DMI: /HVM domU, BIOS 4.0.1 09/28/2010
Hypervisor detected: Xen HVM
Xen version 4.0.
Xen Platform PCI: I/O protocol version 1
Netfront and the Xen platform PCI driver have been compiled for this 
kernel: unplug emulated NICs.
Blkfront and the Xen platform PCI driver have been compiled for this 
kernel: unplug emulated disks.
Booting paravirtualized kernel on Xen
Xen HVM callback vector for event delivery is enabled


But I cannot load xen-blkfront (manually creating the 202 device nodes 
does not help either):
register_blkdev: cannot get major 202 for xvd
xen_blk: can't get major 202 with name xvd
FATAL: Error inserting xen_blkfront 
(/lib/modules/2.6.37-12-server/kernel/drivers/block/xen-blkfront.ko): No 
such device
Does anyone have a running Natty domU with PV-on-HVM?


Best regards,
   Christian


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