[openstack-dev] [nova][cinder] Schedule Instances according to Local disk based Volume?

Matt Riedemann mriedem at linux.vnet.ibm.com
Thu Feb 23 20:06:44 UTC 2017

On 9/26/2016 9:21 PM, Zhenyu Zheng wrote:
> Hi,
> Thanks for the reply, actually approach one is not we are looking for,
> our demands is to attach the real physical volume from compute node to VMs,
> by this way we can achieve the performance we need for usecases such as
> big data, this can be done by cinder using BlockDeviceDriver, it is quite
> different from the approach one you mentioned. The only problem now is
> that we cannot practially ensure the compute resource located on the same
> host with the volume, as Matt mentioned above, currently we have to
> arrange 1:1 AZ in Cinder and Nova to do this and it is not practical in
> commercial
> deployments.
> Thanks.


Is the issue because you can't use ephemeral local disks (it must be a 
persistent boot from volume)?

Have you looked at using the LVM image backend for local storage in 
Nova? I thought cfriesen said once that windriver is doing high 
performance config using local LVM in nova.



Matt Riedemann

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