Limit the ST3146855LW U320 drive to 55 tags to avoid command timeouts

under load. Submitted by: Gelson Borsoi MFC after: 1 day
2012-02-15 07:30:23 +00:00 · 2012-02-15 07:30:23 +00:00 · a470da8388
commit a470da8388
parent 8b8bfa3567
1 changed files with 8 additions and 0 deletions
--- a/sys/cam/scsi/scsi_xpt.c
+++ b/sys/cam/scsi/scsi_xpt.c
@ -293,6 +293,14 @@ static struct scsi_quirk_entry scsi_quirk_table[] =
 		{ T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
 		/*quirks*/0, /*mintags*/2, /*maxtags*/2
 	},
+	{
+		/*
+		 * Experiences command timeouts under load with a
+		 * tag count higher than 55.
+		 */
+		{ T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST3146855LW", "*"},
+		/*quirks*/0, /*mintags*/2, /*maxtags*/55
+	},
 	{
 		/*
 		 * Slow when tagged queueing is enabled.  Write performance