Newly added LUNs are not visible on the cluster/Host

Products

• VMware vSphere ESXi

Issue/Introduction

Newly added LUNs are not visible on the cluster.

vmkernel.log will be filled with below events.

024-06-24T20:09:48.208Z cpu2:2098030)WARNING: lpfc: lpfc_path_claim_handler:11108: 1:(0):3405 ScsiScanAndClaimPath on SAdapter Num x1 TID 8 DID x01f801 Failed, status Maximum allowed SCSI paths have already been claimed
2024-06-24T20:09:48.208Z cpu2:2098030)WARNING: lpfc: lpfc_path_claim_handler:11108: 1:(0):3405 ScsiScanAndClaimPath on SAdapter Num x1 TID 15 DID x01a701 Failed, status Maximum allowed SCSI paths have already been claimed
2024-06-24T20:09:48.208Z cpu2:2098030)WARNING: lpfc: lpfc_path_claim_handler:11108: 1:(0):3405 ScsiScanAndClaimPath on SAdapter Num x1 TID 16 DID x013d01 Failed, status Maximum allowed SCSI paths have already been claimed
2024-06-24T20:09:48.208Z cpu2:2098030)WARNING: lpfc: lpfc_path_claim_handler:11108: 1:(0):3405 ScsiScanAndClaimPath on SAdapter Num x1 TID 17 DID x013b01 Failed, status Maximum allowed SCSI paths have already been claimed
2024-06-24T20:09:48.208Z cpu2:2098030)WARNING: lpfc: lpfc_path_claim_handler:11108: 1:(0):3405 ScsiScanAndClaimPath on SAdapter Num x1 TID 18 DID x013001 Failed, status Maximum allowed SCSI paths have already been claimed
2024-06-24T20:09:48.208Z cpu2:2098030)WARNING: lpfc: lpfc_path_claim_handler:11108: 1:(0):3405 ScsiScanAndClaimPath on SAdapter Num x1 TID 19 DID x019581 Failed, status Maximum allowed SCSI paths have already been claimed
2024-06-24T20:09:48.208Z cpu2:2098030)WARNING: lpfc: lpfc_path_claim_handler:11108: 1:(0):3405 ScsiScanAndClaimPath on SAdapter Num x1 TID 20 DID x01f281 Failed, status Maximum allowed SCSI paths have already been claimed
2024-06-24T20:09:48.208Z cpu2:2098030)WARNING: lpfc: lpfc_path_claim_handler:11108: 1:(0):3405 ScsiScanAndClaimPath on SAdapter Num x1 TID 21 DID x018781 Failed, status Maximum allowed SCSI paths have already been claimed

Environment

vSphere 7.x

Cause

++This is an expected behavior as total path to the host has reached upper limit.

esxcfg-mpath -b | grep -v naa.* | wc -l
5061

As per Configuration Maximum https://configmax.esp.vmware.com/guest?vmwareproduct=vSphere&release=vSphere%207.0&categories=2-0

Number of total paths on a server has an upper limit of 4096 (Fiber Channel)

Resolution

++Down size the path to ESXi host by decommission devices which is no longer required/needed.

Additional Information

run below cmd to check for count of total path mapped to the host
esxcfg-mpath -b | grep -v naa.* | wc -l