Merge pull request kubernetes-sigs#1948 from halimsam/dataloss-change

Return DataLoss error status for any Data Cache related code in NodeStageVolume & NodeUnstageVolume.

Author: k8s-ci-robot

Diff for: cmd/gce-pd-csi-driver/main.go

@@ -27,12 +27,9 @@ import (
 	"strings"
 	"time"
 
-	"k8s.io/client-go/kubernetes"
-	"k8s.io/client-go/rest"
 	"k8s.io/klog/v2"
 	"k8s.io/utils/strings/slices"
 
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"sigs.k8s.io/gcp-compute-persistent-disk-csi-driver/pkg/common"
 	"sigs.k8s.io/gcp-compute-persistent-disk-csi-driver/pkg/deviceutils"
 	gce "sigs.k8s.io/gcp-compute-persistent-disk-csi-driver/pkg/gce-cloud-provider/compute"

Diff for: pkg/common/constants.go

@@ -44,4 +44,11 @@ const (
 	ContexLocalSsdCacheSize = "local-ssd-cache-size"
 	// Node name for E2E tests
 	TestNode = "test-node-csi-e2e"
+
+	// Default LSSD count for datacache E2E tests
+	LocalSSDCountForDataCache = 2
+
+	// Node label for datacache
+	NodeLabelPrefix         = "cloud.google.com/%s"
+	DataCacheLssdCountLabel = "gke-data-cache-disk"
 )

Diff for: pkg/common/runcmd.go

@@ -16,7 +16,7 @@ const (
 // RunCommand wraps a k8s exec to deal with the no child process error. Same as exec.CombinedOutput.
 // On error, the output is included so callers don't need to echo it again.
 
-func RunCommand(pipeCmd string, pipeCmdArg string, cmd1 string, execCmdArgs ...string) ([]byte, error) {
+func RunCommand(pipeCmd string, pipeCmdArg []string, cmd1 string, execCmdArgs ...string) ([]byte, error) {
 	execCmd1 := exec.Command(cmd1, execCmdArgs...)
 
 	if pipeCmd != "" {
@@ -47,9 +47,9 @@ func checkError(err error, execCmd exec.Cmd) error {
 	}
 	return err
 }
-func execPipeCommand(pipeCmd string, pipeCmdArg string, execCmd1 *exec.Cmd) ([]byte, error) {
+func execPipeCommand(pipeCmd string, pipeCmdArg []string, execCmd1 *exec.Cmd) ([]byte, error) {
 
-	execPipeCmd := exec.Command(pipeCmd, pipeCmdArg)
+	execPipeCmd := exec.Command(pipeCmd, pipeCmdArg...)
 	stdoutPipe, err := execCmd1.StdoutPipe()
 	if err != nil {
 		klog.Errorf("failed command %v: got error:%v", execCmd1, err)
@@ -63,8 +63,12 @@ func execPipeCommand(pipeCmd string, pipeCmdArg string, execCmd1 *exec.Cmd) ([]b
 	execPipeCmd.Stdin = stdoutPipe
 	output, err := execPipeCmd.CombinedOutput()
 	if err != nil {
+		// Some commands (such as grep) will return an error with exit status of 1
+		if len(output) == 0 && err.(*exec.ExitError).ExitCode() == 1 {
+			return output, nil
+		}
 		err = checkError(err, *execPipeCmd)
-		return nil, fmt.Errorf("%s failed: %w; output: %s", pipeCmd, err, string(output))
+		return nil, fmt.Errorf("%s failed: %w; output: %s", execPipeCmd, err, string(output))
 	}
 
 	return output, nil