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start nova-compute failure

asked 2012-09-21 09:42:09 -0500

Hi experts,

when I run the command(nova-manage service list), I get the below output root@Userver2:~# nova-manage service list 2012-09-21 17:36:49 DEBUG nova.utils [req-db670af0-2d15-4607-a23d-72dd7d97cb0d None None] backend from (pid=10876) __get_backend /usr/lib/python2.7/dist-packages/nova/ Binary Host Zone Status State Updated_At nova-consoleauth nova enabled :-) 2012-09-21 09:36:45 nova-compute nova enabled XXX 2012-09-21 01:38:53 nova-compute Userver2 nova enabled :-) 2012-09-21 09:36:42 nova-volume nova enabled :-) 2012-09-21 09:36:49 nova-network nova enabled :-) 2012-09-21 09:36:42 nova-scheduler nova enabled :-) 2012-09-21 09:36:41 nova-cert nova enabled :-) 2012-09-21 09:36:48

I noticed that the nova-compute serice can not start. then I run the command (start nova-compute), and I get the following error in the /var/log/nova/nova-compute.log.

2012-09-21 17:29:52 TRACE nova File "/usr/lib/python2.7/dist-packages/nova/", line 114, in wrapped 2012-09-21 17:29:52 TRACE nova return f(args, *kw) 2012-09-21 17:29:52 TRACE nova File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/", line 718, in reboot 2012-09-21 17:29:52 TRACE nova if self._soft_reboot(instance): 2012-09-21 17:29:52 TRACE nova File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/", line 754, in _soft_reboot 2012-09-21 17:29:52 TRACE nova dom.create() 2012-09-21 17:29:52 TRACE nova File "/usr/lib/python2.7/dist-packages/", line 551, in create 2012-09-21 17:29:52 TRACE nova if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self) 2012-09-21 17:29:52 TRACE nova libvirtError: Unable to allow access for disk path /dev/disk/by-path/ No such file or directory 2012-09-21 17:29:52 TRACE nova

Did anyone encounter the same issues?

pls give me some advice to fix it Any help would be appreciated.

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2 answers

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answered 2012-09-24 01:55:50 -0500

the issuse have benn solved. I changed the resume_guests_state_on_host_boot=true and start_guests_on_host_boot=true.

thanks for Yaguang Tang help

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answered 2012-09-22 14:47:36 -0500

heut2008 gravatar image

the reason is that the instance mounts a remote volume before, but duo to some reason, now the volume is not exists in the server. so the instance can't be started, also in your nova.conf I guess you set the resume_guests_state_on_host_boot=true or start_guests_on_host_boot=true .so nova-compute can't start .

you can change the two config options to false to prevent nova-compute from start the instances at startup time. or mount the remove volume manually by using iscsiadm

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Asked: 2012-09-21 09:42:09 -0500

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Last updated: Sep 24 '12