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

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Subject: [Xen-devel] Re: 2.6.37 PV on HVM issues
From: Christian Tramnitz <chris.ace@xxxxxxx>
Date: Sun, 09 Jan 2011 19:52:10 +0100
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References: <4458732F49B59093800C3E56@xxxxxxxxxxxxx> <alpine.DEB.2.00.1012021536210.14723@kaball-desktop> <5ED004EC37ADBBFB70F4FDEE@xxxxxxxxxxxxx> <alpine.DEB.2.00.1012021737300.14723@kaball-desktop> <50F2A5B120DF725B46294E8E@xxxxxxxxxxxxx> <alpine.DEB.2.00.1012031058340.14723@kaball-desktop> <1291375483.5514.15376.camel@xxxxxxxxxxxxxxxxxxxxxx> <C44002062F681A87F54C4B34@xxxxxxxxxxxxx> <alpine.DEB.2.00.1012031720230.14723@kaball-desktop> <325F69BBAAFC8CC362477B43@xxxxxxxxxxxxx> <977838FB997873BF19948E15@xxxxxxxxxxxxx> <alpine.DEB.2.00.1012031748130.14723@kaball-desktop> <77A2D23CEB181E1A3DF46B52@xxxxxxxxxxxxx>
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Alex Bligh wrote:

Bug filed:

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,

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