Commit 8f032263 authored Apr 20, 2009 by Chauhan, Vijay Committed by James Bottomley May 20, 2009

[SCSI] scsi_dh_rdac: Retry for NOT_READY(02/04/01) in rdac device handler

During device discovery read capacity fails with 0x020401 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
0x020401. NEED_RETRY in scsi_decide_disposition does not give
sufficient time for the device to become ready.

Signed-off-by: Vijay Chauhan <vijay.chauhan@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

parent fa858456

drivers/scsi/device_handler/scsi_dh_rdac.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -561,6 +561,12 @@ static int rdac_check_sense(struct scsi_device *sdev,
		struct rdac_dh_data *h = get_rdac_data(sdev);
		switch (sense_hdr->sense_key) {
		case NOT_READY:
		if (sense_hdr->asc == 0x04 && sense_hdr->ascq == 0x01)
		/* LUN Not Ready - Logical Unit Not Ready and is in
		* the process of becoming ready
		* Just retry.
		*/
		return ADD_TO_MLQUEUE;
		if (sense_hdr->asc == 0x04 && sense_hdr->ascq == 0x81)
		/* LUN Not Ready - Storage firmware incompatible
		* Manual code synchonisation required.