2010-07-07 11:12:45 +00:00
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From: Hannes Reinecke <hare@suse.de>
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Subject: Retry ALUA device handler initialization on Unit Attention
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Patch-mainline: not yet
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Whenever we receive a UNIT ATTENTION sense code we should just retry
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the command. No point in checking the various sense codes here.
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Signed-off-by: Hannes Reinecke <hare@suse.de>
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---
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drivers/scsi/device_handler/scsi_dh_alua.c | 31 +++--------------------------
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1 file changed, 4 insertions(+), 27 deletions(-)
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--- a/drivers/scsi/device_handler/scsi_dh_alua.c
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+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
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2011-04-19 20:09:59 +00:00
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@@ -496,33 +496,10 @@ static int alua_check_sense(struct scsi_
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2010-07-07 11:12:45 +00:00
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return SUCCESS;
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break;
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case UNIT_ATTENTION:
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- if (sense_hdr->asc == 0x29 && sense_hdr->ascq == 0x00)
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- /*
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- * Power On, Reset, or Bus Device Reset, just retry.
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- */
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- return ADD_TO_MLQUEUE;
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- if (sense_hdr->asc == 0x2a && sense_hdr->ascq == 0x06) {
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- /*
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- * ALUA state changed
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- */
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- return ADD_TO_MLQUEUE;
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- }
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- if (sense_hdr->asc == 0x2a && sense_hdr->ascq == 0x07) {
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- /*
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- * Implicit ALUA state transition failed
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- */
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- return ADD_TO_MLQUEUE;
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- }
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- if (sense_hdr->asc == 0x3f && sense_hdr->ascq == 0x0e) {
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- /*
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- * REPORTED_LUNS_DATA_HAS_CHANGED is reported
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- * when switching controllers on targets like
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- * Intel Multi-Flex. We can just retry.
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- */
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- return ADD_TO_MLQUEUE;
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- }
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-
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- break;
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+ /*
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+ * Just retry for UNIT_ATTENTION
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+ */
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+ return ADD_TO_MLQUEUE;
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}
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return SCSI_RETURN_NOT_HANDLED;
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