Re: absurdly high "optimal_io_size" on Seagate SAS disk

From: Martin K. Petersen
Date: Thu Nov 06 2014 - 12:34:28 EST


>>>>> "Chris" == Chris Friesen <chris.friesen@xxxxxxxxxxxxx> writes:

Chris> Perhaps the ST900MM0026 should be blacklisted as well?

Sure. I'll widen the net a bit for that Seagate model.

commit 17f1ee2d16a6878269c4429306f6e678b7e61505
Author: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Date: Thu Nov 6 12:31:43 2014 -0500

SCSI: Blacklist ST900MM0026

Looks like this entire series of drives reports the wrong values in the
block limits VPD. Widen the blacklist.

Reported-by: Chris Friesen <chris.friesen@xxxxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>

diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
index 49014a143c6a..9116531b415a 100644
--- a/drivers/scsi/scsi_devinfo.c
+++ b/drivers/scsi/scsi_devinfo.c
@@ -229,7 +229,7 @@ static struct {
{"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
{"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
{"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
- {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
+ {"SEAGATE", "ST900MM", NULL, BLIST_SKIP_VPD_PAGES},
{"SGI", "RAID3", "*", BLIST_SPARSELUN},
{"SGI", "RAID5", "*", BLIST_SPARSELUN},
{"SGI", "TP9100", "*", BLIST_REPORTLUN2},
--
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