[openstack-dev] [nova]Libvirt error code for failing volume in nova
siva.radhakrishnan at intel.com
Wed May 18 19:57:17 UTC 2016
Currently I am working on this bug https://bugs.launchpad.net/nova/+bug/1168011 which says we have to change error message displayed when attaching a volume fails. Currently it catches all operation errors that libvirt can raise and assume that all of them are the source of device being busy. You can find the source of this code here https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L1160. I have few questions on this bug
1. what kind of error message and other required info should we include in the exception to make it look more generalized instead of the current one ?
2. Should we raise separate exception for "Device is Busy" or a single general exception would work fine ?
3. If we need separate exception for device being busy what would be the equivalent libvirt error code for that
I would like to have your feedback/suggestions to proceed further with this bug.
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