“Distributed-Three-way replication is the only supported volume type.”

https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.2/html/container-native_storage_for_openshift_container_platform/ch03s02


On Thu, 29 Mar 2018 at 12:00 am, Tim Dudgeon <tdudgeon...@gmail.com> wrote:

> When using native glusterfs its not clear to me how to configure the
> types of storage.
>
> As described in the glusterfs docs [1] there are multiple types of
> volume that can be created (Distributed, Replicated, Distributed
> Replicated, Striped, Distributed Striped).
>
> In the example ansible inventory file [2] you are suggested to set up
> the glusterfs_devices variable like this:
>
> [glusterfs]
> node0  glusterfs_devices='[ "/dev/vdb", "/dev/vdc", "/dev/vdd" ]'
> node1  glusterfs_devices='[ "/dev/vdb", "/dev/vdc", "/dev/vdd" ]'
> node2  glusterfs_devices='[ "/dev/vdb", "/dev/vdc", "/dev/vdd" ]'
>
> But how is the way those block devices are utilised to create a
> particular type of volume?
>
> How would you specify that you wanted multiple types of volume
> (presumably each with its own storage class)?
>
> Thanks
> Tim
>
> [1]
>
> https://docs.gluster.org/en/latest/Quick-Start-Guide/Architecture/#types-of-volumes
> [2]
>
> https://github.com/openshift/openshift-ansible/blob/master/inventory/hosts.glusterfs.native.example
>
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