bcache创建逻辑

[jimorsm]

请问bcache是如何创建的？我在代码中没有在找到这块逻辑。 测试环境无法成功创建bcache。

0.10版本，helm部署，部署时已启用bcache。

[root@182 ~]# lsmod | grep bcache
bcache                274432  0
crc64                  16384  1 bcache

carina-ndoe 报错

 Create with no support type  failed to create LV name pvc-5b074f0d-c0ff-46b5-b0b5-7c658e4980d4
{"level":"error","ts":1654150765.6952772,"logger":"controller.logicvolume","msg":"Reconciler error","reconciler group":"carina.storage.io","reconciler kind":"LogicVolume","name":"pvc-5b074f0d-c0ff-46b5-b0b5-7c658e4980d4","namespace":"default","error":"Create with no support type ","stacktrace":"sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/workspace/github.com/carina-io/carina/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:266\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func2.2\n\t/workspace/github.com/carina-io/carina/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:227"}

[antmoveh]

这里是bcache的代码

• https://github.com/carina-io/carina/blob/main/pkg/devicemanager/bcache/bcache.go

bcache并不需要特别指定，只需要在sc中配置缓存比例以及缓存盘所在vg卷组即可

• https://github.com/carina-io/carina/blob/main/examples/kubernetes/storageclass.yaml.bcache

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: csi-carina-test
provisioner: carina.storage.io
parameters:
  # file system
  csi.storage.k8s.io/fstype: xfs
  # disk group
  carina.storage.io/backend-disk-group-name: carina-raw-ssd/vdd
  carina.storage.io/cache-disk-group-name: carina-vg-ssd
  # 1-100 Cache Capacity Ratio
  carina.storage.io/cache-disk-ratio: "50"
  # writethrough/writeback/writearound
  carina.storage.io/cache-policy: writethrough
reclaimPolicy: Delete
allowVolumeExpansion: true
# WaitForFirstConsumer表示被容器绑定调度后再创建pv
volumeBindingMode: WaitForFirstConsumer
mountOptions: