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authorIlgu Hong <ilgu.hong@promise.com>2009-01-30 17:00:11 -0600
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-03-12 12:58:11 -0500
commit4d086f6baf73c02d12482c27c9f1e0682825ca13 (patch)
tree4d3801202802b4ed7347f71003a253c2a5f6e2d9
parent49baef0a5dc3c964601c656c1bb2c3458a6934c6 (diff)
[SCSI] scsi dh alua: handle report luns data changed in check sense callout
When we switch controllers the Intel Multi-Flex reports REPORTED_LUNS_DATA_HAS_CHANGED. This patch just has us retry the command. Signed-off-by: Ilgu Hong <ilgu.hong@promise.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
-rw-r--r--drivers/scsi/device_handler/scsi_dh_alua.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 31e1df5c366..dba154c8ff6 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -461,6 +461,15 @@ static int alua_check_sense(struct scsi_device *sdev,
*/
return ADD_TO_MLQUEUE;
}
+ if (sense_hdr->asc == 0x3f && sense_hdr->ascq == 0x0e) {
+ /*
+ * REPORTED_LUNS_DATA_HAS_CHANGED is reported
+ * when switching controllers on targets like
+ * Intel Multi-Flex. We can just retry.
+ */
+ return ADD_TO_MLQUEUE;
+ }
+
break;
}