hpsa: add discovery polling for PT RAID devices.
There are problems with getting configuration change notification in pass-through RAID environments. So, activate flag h->discovery_polling when one of these devices is detected in update_scsi_devices. After discovery_polling is set, execute a report luns from rescan_controller_worker (every 30 seconds). If the data from report_luns is different than last time (binary compare), execute a full rescan via update_scsi_devices. Reviewed-by:Scott Teel <scott.teel@pmcs.com> Reviewed-by:
Justin Lindley <justin.lindley@pmcs.com> Reviewed-by:
Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by:
Hannes Reinecke <hare@suse.de> Reviewed-by:
Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by:
Don Brace <don.brace@pmcs.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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2d62a33e
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