feat(seaweedfs): add per-pool COSI resources and optional storageClass inheritance

Make storageClass optional in storagePools — pools inherit from
volume.storageClass when not explicitly set. Add full COSI resource set
per storage pool: BucketClass, BucketClass-worm (Retain + object lock),
BucketAccessClass readwrite, and BucketAccessClass readonly.

Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Kirill Ilin <stitch14@yandex.ru>

packages/extra/seaweedfs/README.md

@@ -50,11 +50,11 @@
 | `volume.zones`                        | A map of zones for MultiZone topology. Each zone can have its own number of replicas and size.           | `map[string]object` | `{}`    |
 | `volume.zones[name].replicas`         | Number of replicas in the zone.                                                                          | `int`               | `0`     |
 | `volume.zones[name].size`             | Zone storage size.                                                                                       | `quantity`          | `""`    |
-| `storagePools`                        | A map of storage pools. Each pool creates a separate Volume StatefulSet with its own disk type.          | `map[string]object` | `{}`    |
-| `storagePools[name].diskType`         | SeaweedFS disk type tag (e.g., "ssd", "hdd", "nvme").                                                    | `string`            | `""`    |
+| `storagePools`                        | A map of storage pools. Each pool creates a separate Volume StatefulSet with its own disk type. Unset fields inherit from volume.* settings. | `map[string]object` | `{}`    |
+| `storagePools[name].diskType`         | SeaweedFS disk type tag (e.g., "ssd", "hdd", "nvme"). Required.                                         | `string`            | `""`    |
 | `storagePools[name].replicas`         | Number of volume replicas. Defaults to volume.replicas.                                                  | `int`               | `0`     |
 | `storagePools[name].size`             | Persistent Volume size. Defaults to volume.size.                                                         | `quantity`          | `""`    |
-| `storagePools[name].storageClass`     | Kubernetes StorageClass for the pool.                                                                    | `string`            | `""`    |
+| `storagePools[name].storageClass`     | Kubernetes StorageClass for the pool. Defaults to volume.storageClass.                                   | `string`            | `""`    |
 | `storagePools[name].resources`        | Explicit CPU and memory configuration. When omitted, the preset defined in `resourcesPreset` is applied. | `object`            | `{}`    |
 | `storagePools[name].resources.cpu`    | Number of CPU cores allocated.                                                                           | `quantity`          | `""`    |
 | `storagePools[name].resources.memory` | Amount of memory allocated.                                                                              | `quantity`          | `""`    |

packages/extra/seaweedfs/templates/seaweedfs.yaml

@@ -26,9 +26,6 @@
 {{-   if not (regexMatch "^[a-z0-9]+$" $pool.diskType) }}
 {{-     fail (printf "storagePools.%s.diskType must be lowercase alphanumeric (got: %s)." $poolName $pool.diskType) }}
 {{-   end }}
-{{-   if not $pool.storageClass }}
-{{-     fail (printf "storagePools.%s.storageClass is required." $poolName) }}
-{{-   end }}
 {{-   if not (regexMatch "^[a-z0-9]([a-z0-9.-]*[a-z0-9])?$" $poolName) }}
 {{-     fail (printf "storagePools key '%s' must be a valid DNS label (lowercase alphanumeric and hyphens)." $poolName) }}
 {{-   end }}
@@ -157,7 +154,7 @@ spec:
           - name: data1
             type: "persistentVolumeClaim"
             size: "{{ $pool.size | default $zone.size | default $.Values.volume.size }}"
-            storageClass: "{{ $pool.storageClass }}"
+            storageClass: "{{ $pool.storageClass | default $.Values.volume.storageClass }}"
             maxVolumes: 0
           nodeSelector: |
             topology.kubernetes.io/zone: {{ $zoneName }}
@@ -177,7 +174,7 @@ spec:
           - name: data1
             type: "persistentVolumeClaim"
             size: "{{ $pool.size | default $.Values.volume.size }}"
-            storageClass: "{{ $pool.storageClass }}"
+            storageClass: "{{ $pool.storageClass | default $.Values.volume.storageClass }}"
             maxVolumes: 0
           extraArgs:
           - "-disk={{ $pool.diskType }}"

packages/extra/seaweedfs/templates/storage-pool-bucket-classes.yaml

@@ -10,11 +10,34 @@ deletionPolicy: Delete
 parameters:
   diskType: {{ $pool.diskType }}
 ---
+kind: BucketClass
+apiVersion: objectstorage.k8s.io/v1alpha1
+metadata:
+  name: {{ $.Release.Namespace }}-{{ $poolName }}-worm
+driverName: {{ $.Release.Namespace }}.seaweedfs.objectstorage.k8s.io
+deletionPolicy: Retain
+parameters:
+  diskType: {{ $pool.diskType }}
+  objectLockEnabled: "true"
+  objectLockRetentionMode: COMPLIANCE
+  objectLockRetentionDays: "36500"
+---
 kind: BucketAccessClass
 apiVersion: objectstorage.k8s.io/v1alpha1
 metadata:
   name: {{ $.Release.Namespace }}-{{ $poolName }}
 driverName: {{ $.Release.Namespace }}.seaweedfs.objectstorage.k8s.io
 authenticationType: KEY
+parameters:
+  accessPolicy: readwrite
+---
+kind: BucketAccessClass
+apiVersion: objectstorage.k8s.io/v1alpha1
+metadata:
+  name: {{ $.Release.Namespace }}-{{ $poolName }}-readonly
+driverName: {{ $.Release.Namespace }}.seaweedfs.objectstorage.k8s.io
+authenticationType: KEY
+parameters:
+  accessPolicy: readonly
 {{- end }}
 {{- end }}

packages/extra/seaweedfs/values.schema.json

@@ -291,10 +291,6 @@
       "default": {},
       "additionalProperties": {
         "type": "object",
-        "required": [
-          "diskType",
-          "storageClass"
-        ],
         "properties": {
           "diskType": {
             "description": "SeaweedFS disk type tag (e.g., \"ssd\", \"hdd\", \"nvme\").",

packages/extra/seaweedfs/values.yaml

@@ -103,11 +103,12 @@ volume:
 ## @field {string} diskType - SeaweedFS disk type tag (e.g., "ssd", "hdd", "nvme").
 ## @field {int} [replicas] - Number of volume replicas. Defaults to volume.replicas.
 ## @field {quantity} [size] - Persistent Volume size. Defaults to volume.size.
-## @field {string} storageClass - Kubernetes StorageClass for the pool.
+## @field {string} [storageClass] - Kubernetes StorageClass for the pool. Defaults to volume.storageClass.
 ## @field {Resources} [resources] - Explicit CPU and memory configuration. When omitted, the preset defined in `resourcesPreset` is applied.
 ## @field {ResourcesPreset} [resourcesPreset] - Default sizing preset used when `resources` is omitted. Defaults to volume.resourcesPreset.
 
-## @param {map[string]StoragePool} [storagePools] - A map of storage pools. Each pool creates a separate Volume StatefulSet with its own disk type.
+## @param {map[string]StoragePool} [storagePools] - A map of storage pools. Each pool creates a separate Volume StatefulSet
+## with its own disk type. Unset fields inherit from volume.* settings.
 ## In Simple topology, one StatefulSet is created per pool. Pods from different pools may run on the same node.
 ## In MultiZone topology, a StatefulSet is created for each zone×pool combination (e.g., zone1-fast, zone2-fast),
 ## with each pinned to its zone via nodeSelector.