Unable to power on VM on some hosts in a cluster

Products

• VMware Live Recovery

Issue/Introduction

•  You are able to power on VMs on some hosts of the cluster but not others.
•  The datastore where the VM resides is mounted on some hosts but not others
•  The storage array responded to several commands with a write protect sense code in the past, and you can see in the vmkernel logs of the ESXi host errors as the example below:
  2024-09-01T13:05:56.091Z cpu59:33773)NMP: nmp_ThrottleLogForDevice:3333: Cmd 0x89 (0x43be1e8451c0, 81679675) to dev "naa.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" on path "vmhba1:C0:T0:L2" Failed: H:0x0 D:0x2 P:0x0 Valid sense data: 0x7 0x27 0x0. Act:NONE 
  2024-09-01T13:05:56.091Z cpu59:33773)In (182) vmkernel: cpu29:2088560 opID=3b99302b) LVM: 17308: Failed to open device naa.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx:1 : Read only

 

Cause

• The storage array responded to several commands with a write protect sense code 0x7 0x27 and this condition does not allow the host to mount the datastore.
•  The condition on the array was temporary, and some hosts were able to mount the datastore.

Resolution

• Do a storage rescan on all hosts on the cluster to allow hosts to mount the datastore after the write protect condition is solved.
• If any assistance is needed to check/change the presentation mode on the lun, please engage with your storage vendor.