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This is not necessarily a "condition". nova-compute is trying to connect to an iSCSI target. The expected outcome is that the target is available at the cited device file. This is necessary to attach the volume to an instance; it might take a while until a newly created volume becomes available, so nova-compute tries a few times.

My guess is that this happens when you boot from an image that is copied to a volume rather than ephemeral storage. This seems to be the default recently when launching an instance from Horizon.

If there is no message to the effect that the volume wasn't found, there is no problem.

Is anything failing? If yes, where does the volume reside that you are trying to attach, and what do you see in the corresponding cinder volume log? If you don't have conclusive information in the logs, enable debug logging and try again.

This is not necessarily a "condition". nova-compute is trying to connect to an iSCSI target. The expected outcome is that the target is available at the cited device file. This is necessary to attach the volume to an instance; it might take a while until a newly created volume becomes available, so nova-compute tries a few times.

My guess is that this happens when you boot from an image that is copied to a volume rather than ephemeral storage. This seems to be the default recently when launching an instance from Horizon.

If there is no message to the effect that the volume wasn't found, there is no problem.

What exactly are you trying to do? Is anything failing? If yes, where does the volume reside that you are trying to attach, and what do you see in the corresponding cinder volume log? If you don't have conclusive information in the logs, enable debug logging and try again.