Error message: "Some of the disks of the virtual machine "VM_NAME" on host "HOSTNAME" failed to load. The information present for them in the virtual machine configuration may be incomplete" when powering on the VM.

Products

• VMware

Issue/Introduction

• Upon attempting to power on the virtual machine, the following warning message is observed.

"Some of the disks of the virtual machine "VM_NAME" on host "HOSTNAME" failed to load. The information present for them in the virtual machine configuration may be incomplete"

• Summary tab of the VM shows the following: "Some of the disks of the virtual machine "VM_NAME" on host "HOSTNAME" failed to load. The information present for them in the virtual machine configuration may be incomplete".


Environment

VMware vSphere ESXi 7.x

Cause

• The issue occurs when there is a connectivity problem while accessing the devices associated with the VM since the underlying LUN is directly unmapped from the storage side without following the documented process. 

In ESXi logs at /var/run/log/vobd.log, the following events are observed:

YYYY-MM-DDTHH:MM:SS.795Z: [scsiCorrelator] 10822206148769us: [esx.problem.scsi.device.state.permanentloss.noopens] Permanently inaccessible device: naa.######################### has no more opens. It is now safe to unmount datastores (if any): "DS_Name" and delete the device 

In ESXi logs at /var/run/log/vmkernel.log, the following events are observed:

YYYY-MM-DDTHH:MM:SS.788Z cpu111:2098741)NMP: nmp_ThrottleLogForDevice:3815: last error status from device naa.###################### repeated 222 times
YYYY-MM-DDTHH:MM:SS.788Z cpu111:2098741)NMP: nmp_ThrottleLogForDevice:3867: Cmd 0x2a (0x45dad6ce6108, 7021084) to dev "naa.##################" on path "vmhba4:C0:T10:L7" Failed:
YYYY-MM-DDTHH:MM:SS.788Z cpu111:2098741)NMP: nmp_ThrottleLogForDevice:3875: H:0x1 D:0x0 P:0x0 . Act:FAILOVER. cmdId.initiator=0x430eb9c434c0 CmdSN 0x340 sllid: e2000000001e0000

Resolution

Fix the connectivity issue with the storage devices for seamless communication.

Note: If the underlying LUN was unmapped or formatted directly at the storage array level, this indicates a Permanent Device Loss (PDL) or data loss scenario. In this event, the VM will need to be recovered from the latest backup.

Additional Information

Troubleshooting fibre channel storage connectivity