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scsi: smartpqi: Shorten drive visibility after removal

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Check the response code returned from the LUN reset task management
function and if it indicates the LUN is not valid, do not retry.

Reduce rescan worker delay to 5 seconds for the event handler only.

The removal of a drive from the OS could have been delayed up to 30 seconds
after being physically pulled.

The driver was retrying a LUN reset 3 times even though the return code
indiciated the LUN was no longer valid. There was a 10 second delay between
each retry. Additionally, the rescan worker was scheduled to run 10 seconds
after the driver received the event.

Link: https://lore.kernel.org/r/165730601025.177165.9416869335174437006.stgit@brunhilda
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Mike McGowen <Mike.McGowen@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Mike McGowen 2022-07-08 13:46:50 -05:00 committed by Martin K. Petersen
parent aec95e3a8d
commit 4e7d26029e
2 changed files with 9 additions and 2 deletions
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1
drivers/scsi/smartpqi/smartpqi.h
View File

@ -708,6 +708,7 @@ typedef u32 pqi_index_t;
#define SOP_TMF_COMPLETE 0x0
#define SOP_TMF_REJECTED 0x4
#define SOP_TMF_FUNCTION_SUCCEEDED 0x8
#define SOP_RC_INCORRECT_LOGICAL_UNIT 0x9
/* additional CDB bytes usage field codes */
#define SOP_ADDITIONAL_CDB_BYTES_0 0 /* 16-byte CDB */

10
drivers/scsi/smartpqi/smartpqi_init.c
View File

@ -3322,6 +3322,9 @@ static int pqi_interpret_task_management_response(struct pqi_ctrl_info *ctrl_inf
case SOP_TMF_REJECTED:
rc = -EAGAIN;
break;
case SOP_RC_INCORRECT_LOGICAL_UNIT:
rc = -ENODEV;
break;
default:
rc = -EIO;
break;
@ -3697,8 +3700,11 @@ static void pqi_event_worker(struct work_struct *work)
event++;
}
#define PQI_RESCAN_WORK_FOR_EVENT_DELAY (5 * HZ)
if (rescan_needed)
pqi_schedule_rescan_worker_delayed(ctrl_info);
pqi_schedule_rescan_worker_with_delay(ctrl_info,
PQI_RESCAN_WORK_FOR_EVENT_DELAY);
out:
pqi_ctrl_unbusy(ctrl_info);
@ -6256,7 +6262,7 @@ static int pqi_lun_reset_with_retries(struct pqi_ctrl_info *ctrl_info, struct pq
for (retries = 0;;) {
reset_rc = pqi_lun_reset(ctrl_info, device);
if (reset_rc == 0 || ++retries > PQI_LUN_RESET_RETRIES)
if (reset_rc == 0 || reset_rc == -ENODEV || ++retries > PQI_LUN_RESET_RETRIES)
break;
msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS);
}