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This is not due to difference in qemu packages in two versions of ubuntu.
HBA passthrough is working on ubuntu 14.04.01 with both qemu versions.
but HBA passthrough is not working on ubuntu 14.04.02.

Regards
Nikesh

On Fri, Jul 31, 2015 at 4:00 PM, Nikesh Kumar Mahalka <
nikeshmahalka at vedams.com> wrote:

> Below command is failing for FC HBA passthrough from baremetal node(ubuntu 14.04.2 LTS 64 bit server) to nova virtual machines having ubuntu:
> virsh attach-device $VIRSH_NAME $fcoe
>
> where $VIRSH_NAME is 'nova instance property named  OS-EXT-SRV-ATTR:instance_name  having value say instance-0000000b'
>
> and $fcoe is a xml file having contents
> "<hostdev mode='subsystem' type='pci' managed='yes'><source><address domain='0x0000' bus='0x03' slot='0x00' function='0x1'/></source></hostdev>"
>
> Below is error which we are getting:
>
> 23:16:42 2015-07-31 06:16:41.741 | error: Failed to attach device from /tmp/tmp.k66oiZC7eg_fcoe.xml
> 23:16:42 2015-07-31 06:16:41.744 | error: internal error: unable to execute QEMU command 'device_add': Device initialization failed.
>
>
> Same command is working in ubuntu 14.04.01.
>
> below is difference in qemu packages in two versions of ubuntu:
>
> http://paste.openstack.org/show/406571/
>
>
>
>
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