Merge pull request #102212 from mlearned/mlearned-aks-troubleshooting-10minVM

troubleshooting issues on disk attach

Author: PRMerger15

articles/aks/troubleshooting.md

@@ -379,7 +379,7 @@ Recommended settings:
 | 1.12.0 - 1.12.1 | 0755 |
 | 1.12.2 and later | 0777 |
 
-If using a cluster with Kuberetes version 1.8.5 or greater and dynamically creating the persistent volume with a storage class, mount options can be specified on the storage class object. The following example sets *0777*:
+If using a cluster with Kubernetes version 1.8.5 or greater and dynamically creating the persistent volume with a storage class, mount options can be specified on the storage class object. The following example sets *0777*:
 
 ```yaml
 kind: StorageClass
@@ -487,6 +487,10 @@ E1114 09:58:55.367731 1 static_autoscaler.go:239] Failed to fix node group sizes
 
 This error is due to an upstream cluster autoscaler race condition where the cluster autoscaler ends with a different value than the one that is actually in the cluster. To get out of this state, simply disable and re-enable the [cluster autoscaler][cluster-autoscaler].
 
+### Slow disk attachment, GetAzureDiskLun takes 10 to 15 minutes and you receive an error
+
+On Kubernetes versions **older than 1.15.0** you may receive an error such as **Error WaitForAttach Cannot find Lun for disk**.  The workaround for this is to wait approximately 15 minutes and retry.
+
 <!-- LINKS - internal -->
 [view-master-logs]: view-master-logs.md
 [cluster-autoscaler]: cluster-autoscaler.md