On 14-07-03 01:21 PM, Mike Christie wrote:
On 07/03/2014 12:11 PM, Christoph Hellwig wrote:
On Thu, Jul 03, 2014 at 10:05:57AM -0500, Stephen M. Cameron wrote:
From: Stephen M. Cameron <scameron@xxxxxxxxxxxxxxxxxx>
Don't loop through all the devices even after
finding the one we're looking for
The comments in the code seem to indicate that we want to modify
the queue depth for all LUNs on a given target.
Ccing Mike and Vasu as they wrote this code.
Ccing James Smart for more details.
We copied this behavior from lpfc's SAM_STAT_TASK_SET_FULL handling
(look at around the 2.6.32 kernel for reference).
Perhaps there should be a knob to control this, maybe within
the scope of a host. I have one RAID controller that has a
JBOD mode in which real disks are presented as LUs in the same
target. Obviously the TSF (queue_type and other) capabilities
of those real disks might differ.
Doug Gilbert
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