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Merge pull request #83591 from jingxu97/Oct/cache

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Flush data cache during unmount device for GCE-PD in Windows
This commit is contained in:
Kubernetes Prow Robot 2019-10-21 21:11:36 -07:00 committed by GitHub
commit 18cef954a1
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2 changed files with 26 additions and 2 deletions
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8
pkg/volume/gcepd/attacher.go
View File

@ -384,6 +384,14 @@ func (detacher *gcePersistentDiskDetacher) Detach(volumeName string, nodeName ty
}
func (detacher *gcePersistentDiskDetacher) UnmountDevice(deviceMountPath string) error {
if runtime.GOOS == "windows" {
// Flush data cache for windows because it does not do so automatically during unmount device
exec := detacher.host.GetExec(gcePersistentDiskPluginName)
err := volumeutil.WriteVolumeCache(deviceMountPath, exec)
if err != nil {
return err
}
}
return mount.CleanupMountPoint(deviceMountPath, detacher.host.GetMounter(gcePersistentDiskPluginName), false)
}

20
pkg/volume/util/util.go
View File

@ -22,6 +22,7 @@ import (
"os"
"path/filepath"
"reflect"
"runtime"
"strings"
v1 "k8s.io/api/core/v1"
@ -29,7 +30,7 @@ import (
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
apiruntime "k8s.io/apimachinery/pkg/runtime"
utypes "k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/sets"
utilfeature "k8s.io/apiserver/pkg/util/feature"
@ -196,7 +197,7 @@ func LoadPodFromFile(filePath string) (*v1.Pod, error) {
pod := &v1.Pod{}
codec := legacyscheme.Codecs.UniversalDecoder()
if err := runtime.DecodeInto(codec, podDef, pod); err != nil {
if err := apiruntime.DecodeInto(codec, podDef, pod); err != nil {
return nil, fmt.Errorf("failed decoding file: %v", err)
}
return pod, nil
@ -582,3 +583,18 @@ func HasMountRefs(mountPath string, mountRefs []string) bool {
}
return false
}
//WriteVolumeCache flush disk data given the spcified mount path
func WriteVolumeCache(deviceMountPath string, exec mount.Exec) error {
// If runtime os is windows, execute Write-VolumeCache powershell command on the disk
if runtime.GOOS == "windows" {
cmd := fmt.Sprintf("Get-Volume -FilePath %s | Write-Volumecache", deviceMountPath)
output, err := exec.Run("powershell", "/c", cmd)
klog.Infof("command (%q) execeuted: %v, output: %q", cmd, err, string(output))
if err != nil {
return fmt.Errorf("command (%q) failed: %v, output: %q", cmd, err, string(output))
}
}
// For linux runtime, it skips because unmount will automatically flush disk data
return nil
}