OpenStack Compute (nova)

flavor swap, RXTX Quota and RXTX Cap

Asked by Giuseppe Civitella

Hi,

when creating a flavor I can set parameters like swap, RXTX Quota and RXTX Cap.
Are they implemented? If they are, how are RXTX quota and RXTX Cap used?

Thanks

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Brian Lamar
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Best Brian Lamar (blamar) said : 		#1

I believe that 'swap' is used in the compute API when creating a swap volume. The code is in nova/compute/api.py in the _volume_size() method. As for the RXTX quota and RXTX Cap properties I believe they're implemented in the XenAPI driver but not in any other virt drivers. You can see them being used in the XenAPIBridgeDriver:plug() method in nova/virt/xenapi/vif.py.

I know this might not be what you're looking for, but from a code perspective they are being used...however I do not know the *specific* situations and how they work. Perhaps someone can give a more detailed answer.

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Giuseppe Civitella (gcivitella) said : 		#2

Thanks Brian Lamar, that solved my question.