I am currently testing ESXi 4 by adding one ESXi 4 host to our VMware production cluster. The host is a HP BL460c G1 blade running ESXi 4 build 175625 connected to a HP EVA 6000 storage array. The ESXi 4 host seems to run fine but i noticed the following kernel warnings in the system log:
Jul 18 17:00:27 vmkernel: 2:07:08:24.308 cpu7:40478)NMP: nmp_CompleteCommandForPath: Command 0x2a (0x4100021b8480) to NMP device "naa.600508b4000554df00007000034a0000" failed on physical path "vmhba1:C0:T0:L11" H:0x2 D:0x0 P:0x0 Possible sense data: Jul 18 17:00:27 0x0 0x0 0x0.
Jul 18 17:00:27 vmkernel: 2:07:08:24.308 cpu7:40478)WARNING: NMP: nmp_DeviceRequestFastDeviceProbe: NMP device "naa.600508b4000554df00007000034a0000" state in doubt; requested fast path state update...
Jul 18 17:00:27 vmkernel: 2:07:08:24.308 cpu7:40478)ScsiDeviceIO: 747: Command 0x2a to device "naa.600508b4000554df00007000034a0000" failed H:0x2 D:0x0 P:0x0 Possible sense data: 0x0 0x0 0x0.
These warnings don't appear on our ESXi 3 hosts. These warning seems something to do with the multipath policies but i don't understand the warning message. This warnings are reported frequently on multiple lun's. Does anybody knows what these warnings mean?
