Instance failed to start "qemu-img: Could not open...No such file or directory"

asked 2013-05-17 08:38:43 -0600

Shrirang gravatar image

updated 2013-05-17 08:39:29 -0600

Hi,

Does anyone have faced above error? Whenever I try to start an instance it says:

""qemu-img: Could not open '/var/lib/nova/instances/_base/1ec1b1939bae30e12e799232f51bf77182b97be7': No such file or directory\n""

Please find detailed logs attached.

Please help.

Regards, Shrirang

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answered 2013-05-17 19:25:36 -0600

annegentle gravatar image

Couple of thoughts: (some more info on your OpenStack version and operating system might help)

Could something be clearing out the disk for this image? There is a setting in nova.conf, removeunusedbase_images=True, that enables libvirt base file cleanup by default.

Could you have a permissions problem on that particular file (due to rootwrap behavior or some such)?

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answered 2013-05-21 14:55:35 -0600

david-wittman gravatar image

I'm pretty sure this bug is related to your issue:

https://bugs.launchpad.net/openstack/nova/+bug/1182624

To fix, you can either apply https://review.openstack.org/#/c/29982/ (this patch) or boot an instance with a 0GB root disk flavor to this host. This will cache the base image and prevent this bug from appearing. Make sure you use the same image that you wish to boot your other flavors from.

If you choose to do the latter, you can select the host to which your instance will boot by including --availability-zone in your nova boot command. For example:

nova boot --flavor 1 --image 95e50545-3452-4ee9-be32-cfd65ee0ac6f --availability-zone nova:$COMPUTE_HOST instance-name

Where $COMPUTE_HOST is the hostname of the compute host as defined in the nova.compute_nodes table.

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Asked: 2013-05-17 08:38:43 -0600

Seen: 3,626 times

Last updated: May 21 '13