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After enabling space-allocation raw device mapping has all paths down

Last Updated:

Applies to

  • VMware
  • Windows Server Failover Clustering (WSFC)
  • Physical Raw Device Mapping (RDM) LUNs
  • Cluster Across Boxes


  • After setting a LUN offline and online(to enable space_allocation), all related paths stay down in one of two ESXi hosts
  • Windows disk was offlined within the Microsoft cluster node which is a virtual machine (VM) before the procedure but not ESXi
  • The other host with the VM cluster node still attaching the RDM in question has no access issues. 
  • On the affected host:
  • Initiator rescans do not rediscover the LUN. 
  • esxcli storage core device list still contains the LUN 
  • esxcli storage nmp path list displays all paths for that LUN as permanently lost. 
  • esxcli storage core device world list displays the VM name with the NAA of the LUN in question 


[root@esx:~] esxcli storage core device world list | grep my-vm 

naa.600a0980774f6a352d5d4a684exxxxxx 2121675 1 vmm0:my-vm 

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