Error message: "Unsupported LUN Addressing method" in Solaris[TM] messages file (Doc ID 1009314.1)

Last updated on OCTOBER 05, 2022

Applies to:

Symptoms

 A Fibre Connected Third party disk array had been working fine. One day the host server, running Solaris[TM] Operating System(OS), unexpectedly lost connection to the disk array. In the /var/adm/messages file, was the following:

Aug 15 13:55:42 host_name scsi: [ID 243001 kern.info]  /ssm@0,0/pci@1c,700000/pci@1/SUNW,qlc@4/fp@0,0 (fcp2):
Aug 15 13:55:42 host_name FCP: Report Lun Has Changed target=11100 
Aug 15 13:55:42 host_name scsi: [ID 243001 kern.info] /ssm@0,0/pci@1c,700000/pci@1/SUNW,qlc@4/fp@0,0 (fcp2): 
Aug 15 13:55:42 host_name Lun=2 for target=11100 disappeared 
Aug 15 13:55:42 host_name scsi: [ID 243001 kern.info] /ssm@0,0/pci@1c,700000/pci@1/SUNW,qlc@4/fp@0,0 (fcp2): 
Aug 15 13:55:42 host_name Lun=0 for target=11100 disappeared 
Aug 15 13:55:42 host_name scsi: [ID 243001 kern.warning] WARNING: /pseudo/fcp@0 (fcp0): 
Aug 15 13:55:42 host_name Unsupported LUN Addressing method 40 in response to REPORT_LUN 
Aug 15 13:55:42 host_name scsi: [ID 243001 kern.warning] WARNING: /pseudo/fcp@0 (fcp0): 
Aug 15 13:55:42 host_name Unsupported LUN Addressing method 40 in response to REPORT_LUN 
Aug 15 13:55:42 host_name scsi: [ID 243001 kern.info] /ssm@0,0/pci@1c,700000/pci@1/SUNW,qlc@4/fp@0,0 (fcp2): 
Aug 15 13:55:42 host_name offlining lun=2 (trace=0), target=11100 (trace=b10101) 
Aug 15 13:55:42 host_name scsi: [ID 243001 kern.info] /ssm@0,0/pci@1c,700000/pci@1/SUNW,qlc@4/fp@0,0 (fcp2): 
Aug 15 13:55:42 host_name offlining lun=0 (trace=0), target=11100 (trace=b10101)

Changes

Cause