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SubjectRe: 3.12.0: sda2: WRITE SAME failed. Manually zeroing. with 3w-xxxx driver
>>>>> "Justin" == Justin Piszcz <> writes:

Justin> Relevant logs: [178339.353519] 3w-sas: scsi0: ERROR:
Justin> (0x03:0x0101): Invalid command opcode:opcode=0x41.
Justin> [178339.353565] sda2: WRITE SAME failed. Manually zeroing.

Justin> Is this something I should be worried about?

No, it just means that your 3ware controller does not handle the WRITE
SAME command and we fall back to manually writing out zeroes.

I posted a patch a while back that prevents WRITE SAME being issued for
controllers that do not pass the commands through to disk directly:

Martin K. Petersen Oracle Linux Engineering

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