[PATCH 1/1] ibmvscsi: Non SCSI error status fixup

Brian King brking at linux.vnet.ibm.com
Tue May 20 23:52:36 EST 2008

Michael Ellerman wrote:
> On Mon, 2008-05-19 at 10:56 -0500, Dave Boutcher wrote:
>> On Mon, 19 May 2008 10:27:56 -0500, Brian King <brking at linux.vnet.ibm.com> said:
>>> Some versions of the Virtual I/O Server on Power
>>> return 0x99 in the non-SCSI error status field as success,
>>> rather than 0. This fixes the ibmvscsi driver to treat this
>>> response as success.
>> Yeah....0x99...that's an intuitive value for success.
> Hopefully there are no versions that return 0x99 for an error? :)

There shouldn't be. 0x99 is actually not defined as a valid value for
that field, but it is what the ibmvscsis VIOS that is included in
SLES 9 and SLES 10 return on success, due to a bug in that driver.
We plan to fix the ibmvscsis driver as well, but it will take a while
for that fix to propagate. Until very recently, the status field was not
checked, which is why we are only recently running into this problem.


Brian King
Linux on Power Virtualization
IBM Linux Technology Center

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