During heavy I/O testing with issue_lip to bounce the link, occasionally
I/O is terminated with status 3 result 9, which means the RPI is
suspended. The io is completed and this type of error will result in
immediate retry by the scsi layer. The retry count expires and the io
fails and returns error to the application.
To avoid these quick retry/retries exhausted scenarios change the return
code given to the midlayer to DID_REQUEUE rather than DID_ERROR. This
gets them retried, and eventually succeed when the link recovers.
Co-developed-by: Justin Tee <justin.tee@xxxxxxxxxxxx>
Signed-off-by: Justin Tee <justin.tee@xxxxxxxxxxxx>
Signed-off-by: James Smart <jsmart2021@xxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_hw.h | 2 +-
drivers/scsi/lpfc/lpfc_scsi.c | 8 +++++---
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h
index 634f8fff7425..61c9db31d9da 100644
--- a/drivers/scsi/lpfc/lpfc_hw.h
+++ b/drivers/scsi/lpfc/lpfc_hw.h
@@ -3746,7 +3746,7 @@ typedef struct {
#define IOERR_ILLEGAL_COMMAND 0x06
#define IOERR_XCHG_DROPPED 0x07
#define IOERR_ILLEGAL_FIELD 0x08
-#define IOERR_BAD_CONTINUE 0x09
+#define IOERR_RPI_SUSPENDED 0x09
#define IOERR_TOO_MANY_BUFFERS 0x0A
#define IOERR_RCV_BUFFER_WAITING 0x0B
#define IOERR_NO_CONNECTION 0x0C
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 6ccf573acdec..5a3da38a9067 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -4393,6 +4393,7 @@ lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
if (lpfc_cmd->result == IOERR_INVALID_RPI ||
lpfc_cmd->result == IOERR_NO_RESOURCES ||
lpfc_cmd->result == IOERR_ABORT_REQUESTED ||
+ lpfc_cmd->result == IOERR_RPI_SUSPENDED ||
lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) {
cmd->result = DID_REQUEUE << 16;
break;
@@ -4448,10 +4449,11 @@ lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
"9039 Iodone <%d/%llu> cmd x%px, error "
- "x%x SNS x%x x%x Data: x%x x%x\n",
+ "x%x SNS x%x x%x LBA x%llx Data: x%x x%x\n",
cmd->device->id, cmd->device->lun, cmd,
- cmd->result, *lp, *(lp + 3), cmd->retries,
- scsi_get_resid(cmd));
+ cmd->result, *lp, *(lp + 3),
+ (u64)scsi_get_lba(cmd),
+ cmd->retries, scsi_get_resid(cmd));
}
lpfc_update_stats(vport, lpfc_cmd);
--
2.26.2
