2018-03-01 02:15 AM
I've installed a new OpenStack single host but I'm having some troubles on Cinder module. I'm getting the following warning message, so any instance using a big volume fails when launching.
2018-02-28 17:30:33.463 12381 WARNING cinder.
I think that the solution should be to change the maximum over subscription value, however when I change the cinder.conf file, the OpenStack loose the connectivity with Cinder module.
2018-03-01 06:51 AM
In that case you are using LVM as your Cinder backend, not NetApp storage of any kind. Yes you can increase your ratio, but restarting the Cinder service to read it does interupt service.
2018-03-01 06:59 AM
We normally just answer questions for OpenStack around NetApp products, but
Its all in the cinder.conf file. You need to make sure your lvm_type flag is set to thin or you can't oversubscribe at all. Then just update your max_over_subscription_ration to 2.0 or 3.0 save and restart all cinder services.