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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