Messages in this thread | | | Date | Tue, 14 Apr 2009 13:23:37 -0500 | From | "Mike Miller (OS Dev)" <> | Subject | Re: READ CAPACITY (16) failing |
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On Fri, Apr 10, 2009 at 03:28:38PM -0700, James Bottomley wrote: > > > > Why would I never the see the command in the driver? > > Because your devices are reporting compliance to a standard before RC16 > was implemented (we have a check in sd_try_rc16_first() to see if you > comply to higher than SBC-2). Then, after you've failed this, if you > don't return the conventional 0xffffffff to RC10, we never retry with > RC16.
Thanks, James, that looks like the culprit. The LUN actually reports that it is a SCSI_SPC_3 device but the controller reports SCSI_UNKNOWN. I'll work with the firmware guys to fix that. Oddly enough, others here don't report seeing the same RC16 failure. Gets better and better.
Thanks, mikem
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