[SCSI] Log thin provisioning threshold event

At least log the message that we received a THIN PROVISIONING SOFT
THRESHOLD REACHED Unit Attention.  Also added it to unit attention
decodes.

Signed-off-by: Shyam Iyer <shyam_iyer@dell.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

2 files changed, 7 insertions, 0 deletions

diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c
index d0c82340f0e2..60d2ef291646 100644
--- a/drivers/scsi/constants.c
+++ b/drivers/scsi/constants.c
@@ -772,6 +772,7 @@ static const struct error_info additional[] =
         {0x3802, "Esn - power management class event"},
         {0x3804, "Esn - media class event"},
         {0x3806, "Esn - device busy class event"},
+        {0x3807, "Thin Provisioning soft threshold reached"},
 
         {0x3900, "Saving parameters not supported"},
 
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 633c2395a92a..abea2cf05c2e 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -321,6 +321,12 @@ static int scsi_check_sense(struct scsi_cmnd *scmd)
                                     "changed. The Linux SCSI layer does not "
                                     "automatically adjust these parameters.\n");
 
+                if (sshdr.asc == 0x38 && sshdr.ascq == 0x07)
+                        scmd_printk(KERN_WARNING, scmd,
+                                    "Warning! Received an indication that the "
+                                    "LUN reached a thin provisioning soft "
+                                    "threshold.\n");
+
                 /*
                  * Pass the UA upwards for a determination in the completion
                  * functions.