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Re: nova-compute : nbd module not loaded

To: Mohammed Amine SAYA <asaya.openstack@xxxxxxxxx>
From: Michael Still <mikal@xxxxxxxxxxx>
Date: Fri, 3 May 2013 15:59:20 +1000
Cc: "openstack@xxxxxxxxxxxxxxxxxxx" <openstack@xxxxxxxxxxxxxxxxxxx>
In-reply-to: <CALU+5GOs1oVnFjAV9hS=Hkhnz5mySZno29phnXyF9YAbNefa7w@mail.gmail.com>
Sender: mikalstill@xxxxxxxxx

You get this error if there are no nbd devices. Specifically
/sys/block/nbd0 doesn't exist. I'd start by seeing if the kernel
module is loaded.

Cheers,
Michael

On Fri, May 3, 2013 at 10:57 AM, Mohammed Amine SAYA
<asaya.openstack@xxxxxxxxx> wrote:
> Hi All,
>
> I have had time to investigate why booting from volume doesn't work and I
> found the following trace in /var/log/nova/nova-compute.log.
>
> I took a look at nova.conf but I couldn't find any relevent entry for
> nova.virt.disk.mount.disk.
>
> Is it normal to have this trace? It occurs every time I try to launch a new
> instance whether nova uses a standalone image or tries to boot from a
> volume.
>
> Has nova.virt.disk.mount.nbd module been integrated to nova?
>
> BTW, I deployed grizzly 2013.1.
>
> Any hint on this issue guys?
>
> Thanks for you help.
> Amine.
>
> 2013-05-03 02:04:03.447 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:05.449 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:07.451 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:09.452 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:11.454 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:13.475 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:15.477 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:17.479 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:19.481 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:21.483 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:23.551 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:25.554 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:27.556 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:29.556 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:31.558 ERROR nova.virt.disk.mount.nbd
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] nbd module not loaded
> 2013-05-03 02:04:33.636 WARNING nova.virt.disk.mount.api
> [req-afe5f7ba-ac22-4d6c-9fad-283903de0193 f037cb17ddba4a92b1429e11b0c3200e
> 28be43a159854b43ae3b3bdcec3f266a] Device allocation failed after repeated
> retries.
>
>
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References

nova-compute : nbd module not loaded
From: Mohammed Amine SAYA, 2013-05-03