[Openstack] Stderr: "qemu-nbd: Failed to bdrv_open when attempting to boot from cinder volume
Mark Lehrer
mark at tpsit.com
Fri May 3 13:49:04 UTC 2013
> After loading nbd module in compute node, I continued trying to boot from a
> bootable cinder volume but this is what I see in nova-compute.log.
I am not using Cinder so maybe this isn't an option for you, but my
recommendation is to blacklist the "nbd" module altogether, and remove
the nbd option from the nova-compute upstart init file. It is a neat
protocol but it has not been nearly reliable enough to use on my
system.
nova-compute is able to work around the missing nbd module (with
glance at least), and it cut my image create and snapshot times
drastically in addition to reducing the launch & snapshot failures.
Mark
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