On Tue, 2017-05-23 at 06:19 -0700, Dupuis, Chad wrote: > We need to add a bus reset no-op as without it some of the LUNs attached to a > vport may go offline when the error handler escalates to host reset due to not > having a bus reset handler in the driver. What happens is we escalate to host > reset which does a soft link down/link up to reset the adapter. However with > multiple vports attached it's been observed that if the vports do log back into > the target within 5 seconds, the SCSI layer offlines the devices most likely > due to a TUR timing out to verify that the device is online. Adding a bus > reset handler will cause the TUR to be sent after the bus reset handler where > the devices will still be online if the bus reset is initiated by sg_reset > (which is the case in the test that was failing). The bus reset will succeed > and not needlessly bring the device offline/online. Reviewed-by: Bart Van Assche <Bart.VanAssche@xxxxxxxxxxx>
