ember rejecting PVC requests of <1G

[awels]

When I create a PVC of size lets say 200Mi ember is rejecting the PVC request with this error in the logs:

2020-03-11 18:39:20 default ERROR ember_csi.common [req-f8d1937b-0c72-4dde-9584-9ce0d1cb29f7] !! GRPC CreateVolume failed in 0s with OUT_OF_RANGE (Unsupported capacity_range (min size is 1GB)): Exception

Now I understand cinder only supports volumes sizes to the nearest GB, but I would expect it to create a 1G PV for me and that should get bound to my requested PVC.

[Akrog]

Thanks for the bug report.

Looks like Ember-CSI is not respecting the capacity_range field, because the CO is not setting limit_bytes, so we can return a larger volume than requested, and we still fail.

Debug logs of a 200Mi volume:

2020-03-12 14:39:18 lvm INFO ember_csi.common [req-9feaa5bf-7a34-492f-9215-fc90067db483] => GRPC CreateVolume pvc-2295813b-3bf7-4bef-b9b2-986eb56401f4
2020-03-12 14:39:18 lvm DEBUG ember_csi.common [req-9feaa5bf-7a34-492f-9215-fc90067db483] With params:
        name: "pvc-2295813b-3bf7-4bef-b9b2-986eb56401f4"
        capacity_range {
          required_bytes: 209715200
        }
        volume_capabilities {
          mount {
            fs_type: "ext4"
          }
          access_mode {
            mode: SINGLE_NODE_WRITER
          }
        } dolog /ember-csi/ember_csi/common.py:127
2020-03-12 14:39:18 lvm ERROR ember_csi.common [req-9feaa5bf-7a34-492f-9215-fc90067db483] !! GRPC CreateVolume failed in 0s with OUT_OF_RANGE (Unsupported capacity_range (min size is 1GB)): Exception