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Yes, you can change various boot volume types in `magnum.conf` under 
section `cinder`.

Is it possible you've missed the section name? Example below:


[cinder]
default_boot_volume_type=MyCinderPool
default_docker_volume_type=MyCinderPool
default_etcd_volume_type=MyCinderPool
default_boot_volume_size=20



On 15/05/23 22:26, wodel youchi wrote:
> Hi,
>
> When creating Magnum clusters, two disks are created for each VM sda 
> and sdb, the sda is the boot disk and the sdb is for docker images.
> By default the sda is created (at least in my deployment) in nova vms 
> pool, as ephemeral disks, the second disk sdb is created in cinder volume.
>
> Is it possible to move the sda from nova vms to cinder volume?
>
> I tried with default_boot_volume_type, but it didn't work.
> default_boot_volume_type = MyCinderPool
>
> Regards.
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