Merge pull request #1101 from devimc/2020-11-06/runtime/fixClhDax

runtime: clh: disable virtiofs DAX when FS cache size is 0

src/runtime/virtcontainers/clh.go

@@ -1197,22 +1197,23 @@ func (clh *cloudHypervisor) addVolume(volume types.Volume) error {
 		return err
 	}
 
-	if clh.config.VirtioFSCache == virtioFsCacheAlways {
+	// disable DAX if VirtioFSCacheSize is 0
-		clh.vmconfig.Fs = []chclient.FsConfig{
+	dax := clh.config.VirtioFSCacheSize != 0
-			{
-				Tag:       volume.MountTag,
-				CacheSize: int64(clh.config.VirtioFSCacheSize << 20),
-				Socket:    vfsdSockPath,
-			},
-		}
-	} else {
-		clh.vmconfig.Fs = []chclient.FsConfig{
-			{
-				Tag:    volume.MountTag,
-				Socket: vfsdSockPath,
-			},
-		}
 
+	// numQueues and queueSize are required, let's use the
+	// default values defined by cloud-hypervisor
+	numQueues := int32(1)
+	queueSize := int32(1024)
+
+	clh.vmconfig.Fs = []chclient.FsConfig{
+		{
+			Tag:       volume.MountTag,
+			Socket:    vfsdSockPath,
+			Dax:       dax,
+			CacheSize: int64(clh.config.VirtioFSCacheSize << 20),
+			NumQueues: numQueues,
+			QueueSize: queueSize,
+		},
 	}
 
 	clh.Logger().Debug("Adding share volume to hypervisor: ", volume.MountTag)

src/runtime/virtcontainers/pkg/cloud-hypervisor/client/api/openapi.yaml

@@ -1078,6 +1078,10 @@ components:
         id:
           type: string
       required:
+      - cache_size
+      - dax
+      - num_queues
+      - queue_size
       - socket
       - tag
       type: object

src/runtime/virtcontainers/pkg/cloud-hypervisor/client/docs/FsConfig.md

@@ -6,10 +6,10 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **Tag** | **string** |  | 
 **Socket** | **string** |  | 
-**NumQueues** | **int32** |  | [optional] [default to 1]
+**NumQueues** | **int32** |  | [default to 1]
-**QueueSize** | **int32** |  | [optional] [default to 1024]
+**QueueSize** | **int32** |  | [default to 1024]
-**Dax** | **bool** |  | [optional] [default to true]
+**Dax** | **bool** |  | [default to true]
-**CacheSize** | **int64** |  | [optional] 
+**CacheSize** | **int64** |  | 
 **Id** | **string** |  | [optional] 
 
 [[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)

src/runtime/virtcontainers/pkg/cloud-hypervisor/client/model_fs_config.go

@@ -12,9 +12,9 @@ package openapi
 type FsConfig struct {
 	Tag string `json:"tag"`
 	Socket string `json:"socket"`
-	NumQueues int32 `json:"num_queues,omitempty"`
+	NumQueues int32 `json:"num_queues"`
-	QueueSize int32 `json:"queue_size,omitempty"`
+	QueueSize int32 `json:"queue_size"`
-	Dax bool `json:"dax,omitempty"`
+	Dax bool `json:"dax"`
-	CacheSize int64 `json:"cache_size,omitempty"`
+	CacheSize int64 `json:"cache_size"`
 	Id string `json:"id,omitempty"`
 }

src/runtime/virtcontainers/pkg/cloud-hypervisor/cloud-hypervisor.yaml

@@ -654,8 +654,12 @@ components:
 
     FsConfig:
       required:
-      - tag
+      - cache_size
+      - dax
+      - num_queues
+      - queue_size
       - socket
+      - tag
       type: object
       properties:
         tag:

versions.yaml

@@ -75,7 +75,7 @@ assets:
       url: "https://github.com/cloud-hypervisor/cloud-hypervisor"
       uscan-url: >-
         https://github.com/cloud-hypervisor/cloud-hypervisor/tags.*/v?(\d\S+)\.tar\.gz
-      version: "v0.11.0"
+      version: "270631922deee9bdea13635a104e111768446c7b"
 
     firecracker:
       description: "Firecracker micro-VMM"