Merge pull request #78601 from loqutus/aws-encrypted-check-exponential-backoff

change aws encryptedCheck to exponential backoff

staging/src/k8s.io/legacy-cloud-providers/aws/aws.go

@@ -231,12 +231,12 @@ const (
 	createTagFactor       = 2.0
 	createTagSteps        = 9
 
-	// encryptedCheck* is configuration of poll for created volume to check
-	// it has not been silently removed by AWS.
+	// volumeCreate* is configuration of exponential backoff for created volume.
 	// On a random AWS account (shared among several developers) it took 4s on
-	// average.
-	encryptedCheckInterval = 1 * time.Second
-	encryptedCheckTimeout  = 30 * time.Second
+	// average, 8s max.
+	volumeCreateInitialDelay  = 5 * time.Second
+	volumeCreateBackoffFactor = 1.2
+	volumeCreateBackoffSteps  = 10
 
 	// Number of node names that can be added to a filter. The AWS limit is 200
 	// but we are using a lower limit on purpose
@@ -2448,8 +2448,13 @@ func (c *Cloud) waitUntilVolumeAvailable(volumeName KubernetesVolumeID) error {
 		// Unreachable code
 		return err
 	}
-
-	err = wait.Poll(encryptedCheckInterval, encryptedCheckTimeout, func() (done bool, err error) {
+	time.Sleep(5 * time.Second)
+	backoff := wait.Backoff{
+		Duration: volumeCreateInitialDelay,
+		Factor:   volumeCreateBackoffFactor,
+		Steps:    volumeCreateBackoffSteps,
+	}
+	err = wait.ExponentialBackoff(backoff, func() (done bool, err error) {
 		vol, err := disk.describeVolume()
 		if err != nil {
 			return true, err