Hi Martin and James,

On 02/12/2017 07:52 PM, James Smart wrote:
Correct WQ creation for pagesize

Reviewed-by: Mauricio Faria de Oliveira <[email protected]>


Please flag this patch for stable.

This patch resolves a serious problem on IBM Power systems at least.

An (apparently constant) series of invalid iotags cause a series of
SCSI command aborts that escalates into host reset, which fails too, bringing the adapter offline.

And it takes forever to boot, as udev waits on the initial SCSI I/O.

Thank you.


[ 17.044690] lpfc 0000:01:00.1: 1:0372 iotag x0 is out off range: max iotag (x840)
...
[ 723.680700] lpfc 0000:01:00.1: 1:(0):0714 SCSI layer issued Bus Reset Data: x2003 [ 723.680873] lpfc 0000:01:00.1: 1:(0):3172 SCSI layer issued Host Reset Data: [ 724.052506] lpfc 0000:01:00.1: 1:0383 Error -5 during scsi sgl post operation [ 724.052701] lpfc 0000:01:00.1: 1:(0):3323 Failed host reset, bring it offline


--
Mauricio Faria de Oliveira
IBM Linux Technology Center

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