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nova-compute : nbd module not loaded

To: "openstack@xxxxxxxxxxxxxxxxxxx" <openstack@xxxxxxxxxxxxxxxxxxx>
From: Mohammed Amine SAYA <asaya.openstack@xxxxxxxxx>
Date: Fri, 3 May 2013 02:57:25 +0200
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.
Follow ups

Re: nova-compute : nbd module not loaded
From: Michael Still, 2013-05-03