[dm-devel] [PATCH]scsi_dh_rdac: Retry for Quiescence in Progress in rdac device handler

["Chauhan, Vijay" <Vijay Chauhan lsi com>]

During device discovery read capacity fails with 0x068b02 and sets the device size to 0. As a reason any I/O submitted to this path gets killed at sd_prep_fn with BLKPREP_KILL. This patch is to retry for 0x068b02. Please apply.

From: Vijay Chauhan<vijay chauhan lsi com>

This patch adds retry for Quiescence in Progress in rdac device handler.

Signed-off-by: Vijay Chauhan <vijay chauhan lsi com>

---
--- linux-2.6.29-rc2/drivers/scsi/device_handler/scsi_dh_rdac.c.orig    2009-01-26 20:46:05.000000000 +0530
+++ linux-2.6.29-rc2/drivers/scsi/device_handler/scsi_dh_rdac.c 2009-01-26 20:47:34.000000000 +0530
@@ -579,6 +579,11 @@ static int rdac_check_sense(struct scsi_
                         * Power On, Reset, or Bus Device Reset, just retry.
                         */
                        return ADD_TO_MLQUEUE;
+               if (sense_hdr->asc == 0x8b && sense_hdr->ascq == 0x02)
+                       /*
+                        * Quiescence in progress , just retry.
+                        */
+                       return ADD_TO_MLQUEUE;
                break;
        }
        /* success just means we do not care what scsi-ml does */
--