[openstack-dev] [cinder] Taskflow 0.10.0 incompatible with NetApp NFS drivers

Alex Meade mr.alex.meade at gmail.com
Fri May 8 02:29:50 UTC 2015


It appears that the release of taskflow 0.10.0 exposed an issue in the
NetApp NFS drivers. Something changed that caused the sqlalchemy Volume
object to be garbage collected even though it is passed into create_volume()

An example error can be found in the c-vol logs here:

http://dcf901611175aa43f968-c54047c910227e27e1d6f03bb1796fd7.r95.cf5.rackcdn.com/57/181157/1/check/cinder-cDOT-NFS/0473c54/

One way to get around whatever the issue is would be to change the drivers
to not update the object directly as it is not needed. But this should not
fail. Perhaps a more proper fix is for the volume manager to not pass
around sqlalchemy objects.

Something changed in taskflow, however, and we should just understand if
that has other impact.

-Alex
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