Messages in this thread |  | | From | "Justin Piszcz" <> | Subject | RE: 3.12.0: sda2: WRITE SAME failed. Manually zeroing. with 3w-xxxx driver | Date | Thu, 28 Nov 2013 08:07:24 -0500 |
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-----Original Message----- From: Martin K. Petersen [mailto:martin.petersen@oracle.com] Sent: Thursday, November 28, 2013 8:00 AM To: Justin Piszcz Cc: open list; linux-ext4@vger.kernel.org; linux-scsi@vger.kernel.org Subject: Re: 3.12.0: sda2: WRITE SAME failed. Manually zeroing. with 3w-xxxx driver
>>>>> "Justin" == Justin Piszcz <jpiszcz@lucidpixels.com> 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:
http://marc.info/?l=linux-scsi&m=138252394614920&w=2
[ .. ]
Awesome, thank you! This patch is over a month old, do you know if is currently in mainline? I'll also update my case with 3ware/LSI.
Justin.
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