** Also affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1556189
Title:
Hyper-V: destroying an instance can fail, having in-use files
Status in compute-hyperv:
Fix Released
Status in OpenStack Compute (nova):
In Progress
Bug description:
In some cases, destroying an instance can fail, having the instance
log files still in-use.
This can happen in the following scenario:
1. The vm is powered on
2. The vm is requested to be destroyed shortly after (less than a few
seconds). This driver will now attempt to stop the serial console workers, but
none exist yet
3. The instance power on event callback is run, spawning the serial console
workers
4. The instance is powered off as the destroy operation continues. The serial
console workers are not explicitly stopped now. The instance serial port named
pipe should be stopped now, which will cause the serial workers to stop
themselves shortly after, but before this happens, the driver attempts to
delete the instance files, while the console logs are still in use, which will
fail.
Trace: http://paste.openstack.org/show/490196/
The easiest way to avoid this issue would be to simply retry deleting
the instance files if this fails, also ensuring again that the console
workers are stopped. Note that this is quite unlikely to happen in a
real life deployment.
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